A numerical study of mixed convection in a horizontal channel with a discrete heat source in an open cavity |
| |
| Authors: | Saiied M Aminossadati Behzad Ghasemi |
| |
| Institution: | 1. Department of Theoretical Mechanics, Tomsk State University, 634050, Tomsk, Russian Federation;2. Laboratory on Convective Heat and Mass Transfer, Tomsk State University, 634050, Tomsk, Russian Federation;3. Department of Mechanical Engineering, Technology Faculty, Firat University, Elazig, Turkey;4. Department of Mechanical Engineering, King Abdulaziz University, Jeddah, Saudi Arabia;1. Department of Mechanical Engineering, Celal Bayar University, 45140 Manisa, Turkey;2. Department of Mechanical Engineering, Technology Faculty, Frat University, 23119 Elaz?, Turkey;1. Department of Mechanical Engineering, University of Semnan, Semnan, Iran;2. Section des Sciences de la Terre et de L''Environnement, Universitè de Genève, Rue des Maraîchers 13, CH-1205 Genève, Switzerland;3. Shanghai Key Lab of Vehicle Aerodynamics and Vehicle Thermal Management Systems, Address: 4800 Cao An Rd., Jiading, Shanghai 201804, China;4. ENN-Tongji Clean Energy Institute of advanced studies, Shanghai, China |
| |
| Abstract: | This article aims to numerically investigate mixed convection heat transfer in a two-dimensional horizontal channel with an open cavity. A discrete heat source is considered to be located on one of the walls of the cavity. Three different heating modes are considered which relate to the location of the heat source on three different walls (left, right and bottom) of the cavity. The analysis is carried out for a range of Richardson numbers and cavity aspect ratios. The results show that there are noticeable differences among the three heating modes. When the heat source is located on the right wall, the cavity with an aspect ratio of two has the highest heat transfer rate compared to other cavity heating modes. Moreover, when the heat source is located on the bottom wall, the flow field in the cavity with an aspect ratio of two experiences a fluctuating behaviour for Richardson number of 10. The results also show that at a fixed value of Richardson number, all three different heating modes show noticeable improvements in the heat transfer mechanism as the cavity aspect ratio increases. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
