Numerical Simulation of Combined Transient Natural Convection and Volumetric Radiation inside Hollow Bricks | ||
| Journal of Heat and Mass Transfer Research | ||
| دوره 8، شماره 2 - شماره پیاپی 16، بهمن 2021، صفحه 151-162 اصل مقاله (2.57 M) | ||
| نوع مقاله: Full Length Research Article | ||
| شناسه دیجیتال (DOI): 10.22075/jhmtr.2021.21371.1306 | ||
| نویسندگان | ||
| Mohammad Omidpanah1؛ Seyed Ali Agha Mirjalily* 2؛ Hadi Kargarsharifabad3؛ Shahin Shoeibi4 | ||
| 1Department of Engineering, Yazd Branch, Technical and Vocational University (TVU), Yazd, Iran | ||
| 2Department of Mechanical Engineering, Yazd Branch, Islamic Azad University, Yazd, Iran. | ||
| 3Energy and Sustainable Development Research Center, Semnan Branch, Islamic Azad University, Semnan, Iran | ||
| 4Energy and Sustainable Development Research Center, Semnan Branch, Islamic Azad University, Semnan, Iran. | ||
| چکیده | ||
| This study simulated the flow and temperature field inside hollow bricks using well-known geometries to investigate the transient thermal behavior in both solid and fluid regions. To this end, a set of governing equations was solved simultaneously for an absorbing-emitting, isotropically scattering gas and solid region. To discretize the equations, the finite volume method was applied and the radiative transfer equation was calculated using the discrete ordinate method. Furthermore, the block off method is used to distinguish between solid and fluid media in the computational domain. The obtained results show that the rate of heat transfer is minimized in geometries having vertical rectangle sub cavities and their wall emissivity tends to zero. Moreover, the time required to reach steady state condition is an increasing function of total heat flux. | ||
| کلیدواژهها | ||
| radiation؛ conjugate heat transfer؛ transient؛ discrete ordinate method | ||
| مراجع | ||
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