排序方式: 共有12条查询结果,搜索用时 31 毫秒
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Selimefendigil Fatih Öztop Hakan F. Abu-Hamdeh Nidal 《Journal of Thermal Analysis and Calorimetry》2020,141(1):465-482
Journal of Thermal Analysis and Calorimetry - Forced convection of nanofluid in a vented cavity with elastic bottom wall is studied by using an inner conductive L-shaped object and magnetic field.... 相似文献
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Selimefendigil Fatih Oztop Hakan F. Chamkha Ali J. 《Journal of Thermal Analysis and Calorimetry》2019,135(1):325-340
Journal of Thermal Analysis and Calorimetry - In this study, fluid flow and heat transfer in a vertical lid-driven CuO–water nanofluid filled square cavity with a flexible fin attached to its... 相似文献
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Aidaoui Lakhdar Lasbet Yahia Selimefendigil Fatih 《Journal of Thermal Analysis and Calorimetry》2022,147(10):5865-5882
Journal of Thermal Analysis and Calorimetry - This work aims to characterize the heat exchange system efficiency and entropy generation of nanofluid forced convection flow with chaotic... 相似文献
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Selimefendigil Fatih Öztop Hakan F. 《Journal of Thermal Analysis and Calorimetry》2021,143(2):1485-1501
Journal of Thermal Analysis and Calorimetry - Forced convection of hybrid Ag–MgO/water nanofluid in a three-dimensional T-shaped vented cavity with multiple ports under the effects of a inner... 相似文献
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Selimefendigil Fatih Oztop Hakan F. Abu-Hamdeh Nidal H. 《Journal of Thermal Analysis and Calorimetry》2019,135(1):341-355
Journal of Thermal Analysis and Calorimetry - Analysis of mixed convection due to a rotating inner cylinder in a corrugated three-dimensional cavity filled with carbon nanotube-water nanofluid was... 相似文献
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Xuan Hoang Khoa Le Hakan F. Oztop Fatih Selimefendigil Mikhail A. Sheremet 《Entropy (Basel, Switzerland)》2022,24(4)
Heat transport augmentation in closed chambers can be achieved using nanofluids and extended heat transfer surfaces. This research is devoted to the computational analysis of natural convection energy transport and entropy emission within a closed region, with isothermal vertical borders and a heat-conducting solid fin placed on the hot border. Horizontal walls were assumed to be adiabatic. Control relations written using non-primitive variables with experimentally based correlations for nanofluid properties were computed by the finite difference technique. The impacts of the fin size, fin position, and nanoadditive concentration on energy transfer performance and entropy production were studied. It was found that location of the long fin near the bottom wall allowed for the intensification of convective heat transfer within the chamber. Moreover, this position was characterized by high entropy generation. Therefore, the minimization of the entropy generation can define the optimal location of the heat-conducting fin using the obtained results. An addition of nanoparticles reduced the heat transfer strength and minimized the entropy generation. 相似文献
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F. Selimefendigil 《Applied mathematics and computation》2011,217(11):5134-5150
A systematic approach for non-modal stability analysis of thermoacoustic systems with a localized heat source is proposed. The response of the heat source to flow perturbations is obtained from unsteady computational fluid dynamics combined with correlation-based linear system identification. A model for the complete thermoacoustic system is formulated with a Galerkin expansion technique, where the heat source is included as an acoustically compact element. The eigenvalues of the resulting system are obtained from discretization of the solution operator, the maximum growth factor is estimated from the pseudospectra using Kreiss’ theorem.The approach is illustrated with a simple Rijke tube configuration. Results obtained with a simple “baseline” model for the heat source dynamics based on King’s law - widely used in hot wire anemometry - are compared against the more advanced treatment developed here. Analysis of pseudospectra diagrams shows that the choice of the heat source model does influence the sensitivity of eigenvalues to perturbations and hence the non-normal behavior. The maximum growth factor for the system with the heat source model based on King’s law is more sensitive to changes in the heat source location than the CFD-based heat source model. 相似文献
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Selimefendigil Fatih Öztop Hakan F. 《Journal of Thermal Analysis and Calorimetry》2020,141(5):1875-1888
Journal of Thermal Analysis and Calorimetry - In this study, jet impingement heat transfer characteristics for a layered nanofluid and porous domains under the effects of inclined uniform magnetic... 相似文献
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Selimefendigil Fatih Özcan Çoban Seda Öztop Hakan F. 《Journal of Thermal Analysis and Calorimetry》2020,141(5):1569-1590
Journal of Thermal Analysis and Calorimetry - Numerical study of evaporation in porous medium during convective drying process was examined, and heat and mass transfer of liquid water and water... 相似文献