Browsing by Author "Oruc, Mehmet"

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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.
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.
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.
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.
Numerical Studies on the Oil-Water Mixture Separation by Corrugated Plates With Hooks and Holes in Various Shapes and Configurations
(Springer Heidelberg, 2024) Oruc, Mehmet; Salih, Muhammed; Yayla, Sedat; Bayraktar, Seyfettin
The present paper reports the studies on the separation efficiency of a water-oil mixture in the second process in which the water consists of 5-10% crude oil in general. The mixture in this stage was exposed to an additional separation. For this purpose, corrugated plates with L-shaped hooks and holes on the top intersection of the plates were used. Before handling some design factors such as the hole pattern at the intersection of the inclined plates, the inclination angle of the corrugated plates, and the hooks attached to the plates, an experimental rig was designed to validate the computational fluid dynamics (CFD) results. Upon achieving a successful comparison, the numerical studies were extended to reveal the effects of hole shapes and arrangement pattern and the angle of the plates. It was found that attaching L-shaped hooks to the plates improves separation effectiveness by 2% as compared to hookless plates. The parametric CFD studies reveal that the hole shapes do not affect considerably the separation efficiency while raising the plates increases the efficiency slightly and pressure drop dramatically.
Vortex Generator Design for Electrical Energy Harvesting With Piezoelectric in Rivers
(Gazi Univ, 2021) Yayla, Sedat; Ayca, Sumeyya; Oruc, Mehmet
Nowadays, technology and progress in parallel with the energy needs of the increasing population and affluence are increasing day by day with the science and alternative energy production methods are investigated to meet the growing energy needs. To find solutions to the growing energy needs in this study; closed system flow channel plates inserted into the vortex generators establishing a turbulent flow of electricity from the piezoelectric material generated vibration is to be developed. Within the scope of the specified study; vertically in the design of the turbulence value of fluid through the vortex generators made four different Reynolds number can be increased and the channel plate eluted with a piezoelectric material disposed of in two different distances. The results of the experimental studies designed and produced with the vortex generating plate were obtained numerically with the HAD (Computational Fluid Dynamics) simulation program and thus, the boundary conditions for the numerical studies on the same subject were defined after this study. As a result of this study; it was observed that the best energy harvesting efficiency was obtained with the piezoelectric material positioned vertically at the number of 30825 Reynolds and when the distance between the piezoelectric material and the vortex generator plate was 65 mm, the value of 0.017 V voltage and 4.82 J / kg Turbulent Kinetic Energy value was obtained.