Browsing by Author "Yayla, Sedat"

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Birleştirilmiş Plakaların Ayrıştırma Verimliliği Üzerine Etkileri
(2022) Oruç, Mehmet; Yayla, Sedat
Yeraltından çıkarılan karşımın içinde su, gaz ve bazı katı maddeler mevcuttur. Ham petrol olarak çıkartılan karışımın sudan ayrıştırılmasında en yaygın olarak kullanılan yöntem, yerçekimsel ayrışma metotlarından biri olan oluklu levhaların kullanıldığı ayrışma yöntemidir. Bu çalışma kapsamında, ele alınan petrol-su karışım numunesinin 3 farklı Re sayısı (3500, 4800, 6100), oluklu levhaların 3 farklı delik çapının levha genişliğine oranı (0.017, 0.025, 0.033) ve oluklu levhaların ayrışma sistemine 3 farklı montaj (10, 30, 50 derece) açısı parametrelerinin ayrışma verimliliğine etkisi incelenmiştir. Yapılması gereken deney sayısını azaltmak ve böylece maliyet ve deney süresinden tasarruf sağlamak amacıyla, ayırma veriminin en yüksek değerini bulma olasılığını etkilemeden, Box-Behnken tasarımı ile Yanıt Yüzey Yöntemi (RSM) kullanılıp optimizasyon işlemi gerçekleştirilmiştir. Ayrıca Hesaplamalı Akışkanlar Dinamiği (CFD) programında aynı sistem tasarlanarak optimum deney, sayısal olarak gerçekleştirilmiş ve deneysel ve sayısal sonuçların birbiriyle uyumlu olduğu görülmüştür. En yüksek ayırma verimi %99.25 olarak montaj açısı 27 derece, d/w 0.029 ve Re sayısı 4850 olduğunda elde edilmiştir.
A Case Study on Piezoelectric Energy Harvesting With Using Vortex Generator Plate Modeling for Fluids
(Pergamon-elsevier Science Ltd, 2020) Yayla, Sedat; Ayca, Sumeyya; Oruc, Mehmet
In parallel with the increasing population and prosperity level with the advancement of technology and science, the need for energy is increasing day by day, and alternative energy production methods are being explored to meet increased energy need. In this study, it is aimed to produce electrical energy through vibrations created in piezoelectric material by placing turbulent plates in a closed system flow channel and increasing turbulence intensity. Vortex generating plates with nozzles of different angles and diameters are designed in 3 dimensional (3D), and the vortex intensities of these vortex generating plates were determined experimentally. Then, the experimental data obtained were simulated using the CFD (Computational Flow Dynamics) program. In this study, it was observed that the best energy harvest efficiency was obtained with the piezoelectric material positioned vertically in the number of 30825 Reynolds. When the distance between the piezoelectric material and the vortex generator plate was 80 mm, 16.5 J/kg Turbulent Kinetic Energy and 0.023 V were obtained. With the development of these methods and tools, it is expected that a more efficient electrical energy harvest will be obtained in the future. (C) 2020 Elsevier Ltd. All rights reserved.
Cfd Simulation of Designed Coalescing Plates for Separating Water and Oil in Water Treatment Plants Used in Petroleum Projects
(Pamukkale Univ, 2017) Yayla, Sedat; Ibrahim, Soran Sabah; Olcay, Ali Bahadir
Petroleum production generates an immense amount of oily polluted water which may have harmful effects on environment At the same time, produced water is the biggest waste stream produced in the petroleum industry. In the past decades produced water treatment was the point of attention. However, the processes of treatment to separating water and oil have been enhanced gradually. This study used a two-dimensional computational fluid dynamics (CFD) model to investigate the effect of space between coalescing plates, orifice diameter and mixture inlet velocity on separation efficiency. Spacing values of 8, 12, 16, 20, 24 mm between plates, orifice diameters of 10, 15, 20 mm with different cross sections (e.g, cylindrical, rectangular, ellipse, and triangle) along with four different mixture inlet velocities of 0.02, 0.03, 0.04, 0.05 m/s were utilized to discover the effect of each parameter on the separation efficiency. The investigation revealed that the increase in the distance between plates was inversely proportional to the separation efficiency and the increase in the velocity of the mixture or mass flow rate inlet was inversely proportional to the separation efficiency. It was also found that the highest separation efficiency was obtained for the cylindrical shape with a hole diameter of 15 mm. It was also observed that the separation efficiency varied between 25% and 99.25% depending on the values of mixture inlet velocities and distance between plates.
Comparison of Flow Structures in the Downstream Region of a Cylinder With Flexible Strip
(E D P Sciences, 2015) Teksin, Suleyman; Yayla, Sedat
The present study investigates the details of flow structure to downstream of a circular cylinder mounted on a flat surface, in successive plan-view plane both in the boundary layer and up level region. The behavior of the flow in the wake of the bare cylinder and attached a flexible strip which has a 1400 N/mm2 modulus of elasticity vinyl PVC transperent film. The length of strip 240 mm (L/D=4) is investigated using Particle Image Velocimetry (PIV) technique for Reynolds numbers based on the cylinder diameter of 2500. The flow data downstream of the cylinder are presented using time-averaged velocity vector map, V-avg, streamline patterns, psi(avg), vorticity contours, omega(avg), and Reynolds stress correlations, u'u'(avg), v'v'(avg), u'v'(avg) and rms velocity values. The locations of the peak values of Reynolds stress correlations and other data are also presented in both bare cylinder and attached body in order to determine the regions under high fluctuations. Another L/D ratios will be investigated in other experiments.
Computational Analysis of Effects of Location of the Diverter Plate and Inlet Velocity on the Efficiency of Two-Phase Flow Separator
(Gazi Univ, 2019) Yayla, Sedat; Kamal, Karwan; Bayraktar, Seyfettin
Two-phase horizontal gravity separators are generally used in the petroleum industry for gas and liquid separation. There are several studies in the relevant literature that reports various methods to determine the optimum diameter and length of the separator. Although the diverter plate is used to increase the separation speed, there is not any exact approach for specifying the appropriate location of the diverter plate on the inlet pipe. In the present study, the main volume of the separator is defined for a particular amount of mixture of oil and gas. Effects of the location of the diverter plate and inlet velocity on the separation efficiency are investigated for three locations of the diverter plate (100 mm, 150 mm, 200 mm) and four different inlet velocities (0,25 m/s, 0,5 m/s, 0,75 m/s, 1 m/s) by means of computational fluid dynamics (CFD) method. Two-phase, three-dimensional (3D) and fully turbulent flow simulations reveal that the highest separation efficiency is obtained as 99% when the straight diverter plate is 200 mm far away from the top inlet and the inlet velocity is 0,25 m/s.
Computational Fluid Dynamics and Heat Transfer Analysis for a Novel Heat Exchanger
(Asme, 2015) Ma, Haolin; Oztekin, Dennis E.; Bayraktar, Seyfettin; Yayla, Sedat; Oztekin, Alparslan
Computational fluid dynamics (CFD) and heat transfer simulations are conducted for a novel heat exchanger. The heat exchanger consists of semi-circle cross-sectioned tubes that create narrow slots oriented in the streamwise direction. Numerical simulations are conducted for Reynolds numbers (Re) ranging from 700 to 30,000. Three-dimensional turbulent flows and heat transfer characteristics in the tube bank region are modeled by the k-e Reynolds-averaged Navier-Stokes (RANS) method. The flow structure predicted by the two-dimensional and three-dimensional simulations is compared against that observed by the particle image velocimetry (PIV) for Re of 1500 and 4000. The adequate agreement between the predicted and observed flow characteristics validates the numerical method and the turbulent model employed here. The three-dimensional and the twodimensional steady flow simulations are compared to determine the effects of the wall on the flow structure. The wall influences the spatial structure of the vortices formed in the wake of the tubes and near the exit of the slots. The heat transfer coefficient of the slotted tubes improved by more than 40% compare to the traditional nonslotted tubes.
Control of Flow Structures Around a Cylinder in Deep Water Employing a Passive Control Element
(Iop Publishing Ltd, 2019) Yayla, Sedat; Teksin, Suleyman; Sahin, Besir
This study aimed to experimentally investigate the swirling flow characteristic in the periphery of a cylinder located vertically in a deep water channel using a particle image velocity measurement method (PIV). In addition to the PIV method, paint visualization experiments were performed to observe the structures of vortical flow qualitatively. Based on the cylinder diameter, Reynolds numbers were changed incrementally as 2.5 x 10(3), 5 x 10(3), and 7.5 x 10(3), while the length of the control element, L = 180 mm was kept constant. The flexible splitter plate made of a plastic material was easily deformed under the influence of vortical flow. In the horizontal plane, taken from the middleheight of the cylinder, instantaneous flow data was measured first. Along these measurements, the distributions and magnitude of the velocity vectors, < V >, vorticity concentrations, , patterns of streamlines, , root mean square of velocity component such as < urms > and < vrms >, correlations of shear stresses, < u'u'>, < v'v'> and < u'v'>, turbulent kinetic energy, TKE, and spectral analysis is conducted to define the frequency, f of vortex formations. The presence of a flexible flow control element located along the central axis line of the cylinder significantly affects the vortex formations. The existence of the flexible flow control element can significantly influence the wake flow region. Furthermore, many of the value of flow characteristics decreased as mentioned with respect to the bare case.
Determination of Wind Potential in Van and Hakkari Regions
(2018) Harmancı, Emrah; Yayla, Sedat
Bu çalışmada Türkiye'nin Doğu Anadolu bölgesinde yer alan Van ve Hakkari illerindeki rüzgar potansiyeli, YSA(Yapay Sinir Ağları), Derin Öğrenme ve WASP (Wind Atlas Aplication Program) programı kullanılarak belirlenmeye çalışılmıştır. YSA ve WASP hesaplamalarında MGM (Meteoroloji Genel Müdürlüğü)'nden alınan 5 yıllık istasyon ölçüm verileri kullanılmıştır. Derin Öğrenme aşamasında ise, Meteosat 7 uydusuna ait Doğu Avrupa uydu görüntüleri kullanılmıştır. Uydudan elde edilen görüntüler ve MGM'nden alınan veriler kullanılarak, Derin Öğrenme ve YSA üzerinden hedef istasyon verileri tahmin edilmeye çalışılmıştır. Tahmin edilen hedef istasyona ait gerçek değerler ve tahminlemeler ile bulunan sonuç değerleri arasında genel olarak 1 m/s 'nin altında farklar gözlemlenmiştir. Bu değerler 3-25 m/s aralığında çalışan türbinler için, potansiyel tahmini açısından iyi sonuçlar oluşturmaktadır. Çalışmada YSA ve Derin Öğrenme Yöntemleri için, hata oranı belirlemek amacıyla, veri setindeki her bir tahminin ağırlıklı etkisine göre toplam hata oranını belirleyen yeni bir sınama yöntemi MCE (Kategorize Edilmiş Ortalama Sınama) sunulmuştur. MGM'den alınan ölçüm verileri, WASP programında, SRTM (Shuttle Radar Topography Mission) Database'den alınmış olan bölgelere ait halihazır haritalar ile birlikte simüle edilmiş ve incelenen bölgelere ait rüzgar potansiyelleri belirlenmiştir.
Effects of Flexible Plate Attached To the Rear of the Cylinder on Flow Structure
(Korean Soc Mechanical Engineers, 2017) Teksin, Suleyman; Yayla, Sedat
In this experimental study, the flow structure in the wake flow region was investigated with the Particle image velocimetry technique (PIV) by attaching elastic plates at different lengths behind the cylinder. The flow structure occurred at the wake flow region altered depending on the length of the flexible matter. In this experiment, the strips with the lengths of 75, 90, 120, 135 and 180 mm were used to control instabilities. Diameter of the cylinder (D) is 60 mm and the water height (h(w)) is 600 mm. Reynolds number was kept constant as 5000 based on cylinder diameter. The images were captured at mid-height of the cylinder (h(m)) which is 250 mm. As a result of experimental studies, attached flexible strip suppressed vortex shedding occurred in the behind of the cylinder and it is observed that effect of the length flexible of the strip is pretty much. Maximum level of flow characteristics such as Reynolds stress, fluctuation velocities and turbulent kinetic energy were decreased with flexible splitter plate and shifted through the downstream region.
Estimation of Target Station Data Using Satellite Data and Deep Learning Algorithms
(Wiley-hindawi, 2021) Yayla, Sedat; Harmanci, Emrah
In this study, an innovative model has been developed for wind speed estimation through the Deep Learning method using hourly wind speed data from the measurement stations of the General Directorate of Meteorology in Van and Hakkari provinces in Turkey in conjunction with simultaneous satellite images from Eumetsat. Obtained satellite images were used during the introduction of the model, while wind speed data were used at the output stage. As a result of the findings, it was found that 85% accuracy performance could be achieved to provide sufficient insight for systems that are widely established worldwide. The model, developed as a result of the study, eliminates the need to install wind measuring stations for any region on earth within the satellite field in terms of determining wind potential. Since the field of view of the Meteosat 7 satellite covers the whole of Eastern Europe, it was determined that it could predict a high rate of up to 6 hours later by the method used in image analysis. The systems to be controlled with this method will be able to examine the weather events instantly at each point in the satellite field of view and make more accurate decisions. Also, companies will be able to perform a more detailed and rapid field scan compared to existing limited methods, and reduce initial investment costs and operating costs in terms of renewable energy resources investments.
Experimental Analysis of Treatment Performance by Optimization of Effective Parameters on Corrugated Plates Used in Treatment Systems
(Acad Sci Czech Republic, inst thermomechanics, 2022) Oruc, Mehmet; Yayla, Sedat
Crude oil, which is brought to the surface from underground with high cost and loss of time, contains water, gas and some solids. The most widely used method for separating the crude oil brought to the earth from water is the separation method, which is one of the gravitational separation methods, using corrugated plates.In this study, 3 different Re numbers (3033.058, 4766.2345, 6499.411) of 1st Processed crude oil sample, the ratio of 3 different hole diameters of the corrugated plates to the plate width (0.018,0.021,0.024) and 3 different mounting angles ( 0, 25, 50 degrees) parameters were taken into consideration and the effect of the relevant parameters on the separation efficiency was investigated.In order to reduce the number of experiments and save on cost and experiment time, without affecting the probability of finding the highest value of the separation efficiency, the Response Surface Method (RSM) was optimized with the Box-Behnken method and relevant trial designs were created.In line with these experimental designs, the relevant experiments were carried out in duplicate.
Experimental and Numerical Analysis of the Treatment System Designed With Coalescing Plates
(2020) Oruç, Mehmet; Yayla, Sedat
Petrol ve türevi ürünlerin; hayatın her alanına girdiği gerçeği göz önüne alındığı zaman, petrolün üretilmesinden tüketilmesine kadar olan bütün ara işlemlerin ciddi bir titizlikle yapılması gerekmektedir. Yeraltı ve kuyu akışkanları genelde petrol, gaz ve su bileşenlerinin karışımıdır. Bu bileşenlerin her birinin belirli bir uygulamada kullanılması için ayrıştırılması gerekir. Petrol, ayrıştırma sürecinde genel olarak iki işleme tabi tutulmaktadır. Petrol, I. işlemden (kuyudan çıkartılan petrolden çamur, gaz ve suyun bir kısmının ayrıştırıldığı proses) geçirildikten sonra II. işleme (petrolden özellikle suyun ayrıştırıldığı proses) geçilmelidir. II. İşlem kapsamında petrolden bir miktar gaz ve çamur da ayrıştırılsa bile temel amaç petrolün içindeki suyun ayrıştırılmasıdır. Bu çalışmada: suyun ayrıştırıldığı II. İşleme yönelik olarak, ayrıştırma sisteminde kullanılan her bir değişken parametre (birleştirilmiş plaka ebadı, delik çapı, plakalar arası mesafe, birleştirilmiş plakaların sisteme montaj açısı, Re sayısı vb.) göz önünde bulundurularak bu parametrelerin maksimum verimin ayrışma süresine etkisi araştırılmıştır. Yapılması gereken fazla deney sayısından dolayı oluşacak maliyeti azaltmak ve zamandan tasarruf etmek için Box Behnken Tasarımı ile deneme desenleri oluşturulmuştur. Bu deneme desenlerine göre deneyler yapılıp ve sonuç olarak elde edilen ayrışma verimlilik değerleri Yanıt Yüzey Metodu (YYM) ile değerlendirilip optimum deneme deseni ve bu deseninde etkili olan değişken parametreler belirlenmiştir. Bu deneme deseninin deney sonuçları sayısal olarak da bir HAD programı ile 2B olarak elde edilmiştir.
An Experimental and Numerical Study for Energy Harvesting With Piezoelectricity in Rivers
(Acad Sci Czech Republic, inst thermomechanics, 2022) Yayla, Sedat; Ayca, Sumeyya; Oruc, Mehmet
This work is concerned with finding the optimal nozzle length for a piezoelectric harvester. Studies are carried out experimentally and numerically. First, the optimum Reynolds number is found. It was then numerically studied to find the optimum nozzle length. As a result, the most efficient design is produced and studied experimentally. The results found are compared. The "target function" is to find the best turbulent kinetic energy at the appropriate nozzle length.
An Experimental and Numerical Study on the Conversion of Hydrokinetic Energy To Electric Energy With Piezoelectric Materials
(2022) Ayça, Sümeyya; Yayla, Sedat
Dünyada fosil enerji kaynaklarının sınırlı olması, yenilenebilir enerji kaynaklarının kullanımını daha önemli kılmaktadır. Yenilenebilir enerji üretim sistemlerinde kullanılan piezoelektrik malzemeler günümüzde güncelliğini korumaktadır. Bu çalışmada; yenilenebilir enerji kaynaklarından biri olan hidrolik enerji kapsamında elektrik enerjisi elde etmek amacıyla piezoelektrik malzeme kullanılmıştır. Enerji dönüşümü için kullanılan piezoelektrik malzemenin elektrik üretim verimini arttırmak için, mevcut kapalı sistem akış kanalında türbülans şiddeti arttırılmaya çalışılmış olup girdap üretici plakalar tasarlanmıştır. Sınır şartlarının oluşturulması için ilk girdap üretici plakalar ile deneysel çalışmalar yürütülmüş ve daha sonra yapılan sayısal çalışmalar ile elde edilen veriler mukayese edilmiştir. Tasarlanan girdap üretici plakanın nozul uzunluğu, dönen plakanın kanat sayısı ve kanat açısı modellenmiş ve ele alınan parametrelerin optimum değerlerinin bulunması için ANSYS Fluent programında sayısal çalışmalar yürütülmüştür. Ayrıca plakalar, Piezoelektrik malzeme ve zemin arası optimum mesafeler deneysel olarak bulunmaya çalışılmıştır. Yapılan sayısal ve deneysel çalışmalar sonucunda elde edilen nihai değerler 0.022 TKE, 0.48 Volt olarak kaydedilmiş ve ölçülen sonuçlara bakıldığında daha önce yapılan çalışmalardan yaklaşık olarak 3 kat daha fazla verim elde edildiği görülmüştür.
Experimental Investigation and Optimization Analysis of a Designed Wastewater Treatment System
(Asce-amer Soc Civil Engineers, 2023) Oruc, Mehmet; Yayla, Sedat
Wastewater, crude oil, gas, and solid particles are extracted from underground as products during oil production and there are various methods for treating this wastewater. In this study, a corrugated plate treatment system using the gravitational treatment method was designed as a wastewater treatment method. In the designed system, wastewater (oil-water mixture) was treated using uncoated corrugated plates and corrugated plates coated with hydrophobic material. The effects of hole diameter, length, and curvature angle of the corrugated plates; pumping speed of the mixture into the system; mounting angle of the corrugated plate sets; and the distance between the plates on treatment capacity in the case of using coated and uncoated plates were experimentally investigated. In order to statistically examine the effect of the parameters and the hydrophobic material used on the treatment capacity, the relevant parameters were optimized using the response surface method (RSM) and Box-Behnken design. It was observed that there are significant changes in the treatment capacity due to events (flow treatment, decrease in boundary layer thickness, and change in fluid energy). In addition, it was concluded that coating the plates increased the treatment capacity and the mounting angle of the plate sets in the system greatly affected the treatment capacity.
Experimental Investigation of Oil-In Water Separation Using Corrugated Plates and Optimization of Separation System
(Taylor & Francis inc, 2022) Oruc, Mehmet; Yayla, Sedat
Crude oil mixture extracted from the underground; contains water, gas and solid particles, and this mixture firstly separated by a process described in the literature as 1st Process, from gases and most of the solid particles. The separated water containing 5-10% crude oil is subjected to the 2nd Process and 95-99% of water is separated. In this study, the 2nd Process was carried out with an apparatus designed using corrugated plates for crude oil-water mixtures with different properties obtained from 3 different oil production fields. In the designed setup, variable parameters such as the ratio of the distances between plates to width (0.02, 0.05, 0.07), length to width ratio (0.8, 1.2, 1.6), the temperature values of the mixture before entering the separation system (25, 30, 35 degrees C) and the mounting angles of these plates in the separation system (0 degrees, 20 degrees, 40 degrees) which affect the separation efficiency discussed. The Response Surface Method was used to obtain the levels at which the process variables have the desired effect on the response of the separation system. A maximum separation efficiency value of 99.6% was obtained at the system from the oil-water mixture pumped into the system with a fixed flow of 28 L/min.
Flow Characteristic of Staggered Multiple Slotted Tubes in the Passage of a Fin Tube Heat Exchanger
(Assoc Mechanical Engineers Technicians Slovenia, 2013) Yayla, Sedat
The flow characteristics of inline and staggered cylinders placed in a fin tube heat exchanger model are experimentally investigated for Reynolds numbers of 1500 and 4000, having a duct height to cylinder diameter ratio of 0.4. In this study, the Reynolds number is calculated based on the cylinder diameter. Particle image velocimetry (PIV) is studied to obtain instantaneous representations of the non-steady flow for a specified flow field. Time-averaged flow data clearly indicates that flow through semi-cylinders has a substantial effect on the turbulent flow characteristics. A variation of time-averaged flow data along a specific line is also presented graphically. The flow interactions in the stream-wise and cross-stream bases of the staggered cylinders with a flat plate surface result in a three-dimensional and a complex flow behaviour.
Flow Measurement Around a Cylindrical Body by Attaching Flexible Plate: a Piv Approach
(Elsevier Sci Ltd, 2018) Yayla, Sedat; Teksin, Suleyman
In this study, flow structures and downstream wake behind a flexible splitter plate attached to a circular cylinder have been qualitatively and quantitatively investigated at three different Reynolds numbers of 2500, 5000 and 7500. The Particle Image Velocimetry (PIV) technique was implemented to examine the flow field downstream of the bluff body in deep water. Laser sheet illuminated the region 5 mm below the top of the cylinder. All results were compared with a bare cylinder case to analyze differences in flow characteristics. Time-averaged velocity vector field < V > , vorticity contours < omega > , turbulent kinetic energy, TKE, rms of streamwise, u(rms), transverse, v(rms), velocity components were acquired and also frequency, f of vortex shedding was carried out using single point spectral analysis from PIV data to indicate flow structures. It was observed that the flexible splitter plate had a considerable effect on vortex shedding and fluctuations were prominently weakened by the use of control material.
Hesaplamalı Akışkanlar Dinamiği Kullanılarak Çeşitli Jet Hızları ve Ayırıcı Açıları İçin Bir Pelton Türbin Kepçesine Etki Eden Kuvvetlerin Belirlenmesi
(2018) Yayla, Sedat; Oruç, Mehmet; Abdullah, Azhin
Bu çalışmada, ANSYS-Fluent programı ile gerçekleştirilen sayısal analizlerde iki fazlı akışkan ile akış hacim modeli kullanılmıştır. Güç üretiminin değerlendirilmesi için Pelton türbin kepçesinde mevcut olan kuvveti belirlemek amacıyla, iki farklı kepçe şeklindeki modelin kepçe ayırıcı açıları, giriş hız değerleri ve jet çapları üzerindeki etkileri araştırılmıştır. Her bir parametrenin, kepçe yüzeyinde oluşturduğu kuvvetin üzerindeki etkisinin belirlenmesi için çalışmada; 20, 25, 30, 35 ve 40 m / s'lik çeşitli giriş hızlarındaki iki farklı kova modelinin 55, 75, 90 ve 115 ° 'lik dört farklı ayırıcı açısına sahip 30 ve 40 mm'lik iki jet çapı kullanmıştır. Kova üzerindeki kuvvet ve jet giriş hızı arasında doğrusal bir ilişki olduğu ortaya çıkmıştır; bu nedenle Model 1 ve 2 için daha yüksek jet hızları için kova üzerinde daha yüksek bir kuvvetin elde edilebileceği sonucuna ulaşılmıştır.
Investigation of Effect of Boundary Layer on Flow Structure Around a Cylinder With a Strip
(E D P Sciences, 2015) Yayla, Sedat; Teksin, Suleyman
In this study, the flow characteristic of the circular cylinder was placed vertically in channel which has dimensions as 8000 mm, 1000 mm, 750 mm, lenght, width and height repectively, was investigated. The cylinder was located in boundary layer with a diameter of 60 mm (D) and a elastic stripwhich has a 1400 N/mm(2) modulus of elasticity vinyl PVC transperent film was attached behind the cylinder. Lenght of the strip (L) was 240 mm L/D=4. The Reynolds number was fixed at Re=7500. The time-averaged and instantaneous velocity vector maps, vorticity contours, Reynold shear and normal stresses, turbulent kinetic energy and frequency of shedding were obtained using the particle image velocimetry (PIV) technique. It was found that the elastic plate which exists behind the cylinder has a slight influence on the flow structure of the wake-boundary layer interaction. Values of turbulent kinetic energy, streamwise Reynold stress, transverse Reynold stresses were decreased by attaching strip.