Loading...

Entropy generation for compressible natural convection with high gradient temperature in a square cavity

Alipanah, M ; Sharif University of Technology | 2010

835 Viewed
  1. Type of Document: Article
  2. DOI: 10.1016/j.icheatmasstransfer.2010.07.020
  3. Publisher: 2010
  4. Abstract:
  5. Entropy generation due to heat transfer and fluid friction irreversibility has been investigated in a square cavity subjected to different side wall temperatures for compressible and incompressible natural convection flows. Based on the obtained velocity and temperature values, the distributions of local entropy generation, average entropy generation and average Bejan number are determined and compared for compressible and incompressible regimes. It is found that the entropy generated for compressible flow always is more than incompressible flow. The study is performed for Ra=10 4-10 8, j{cyrillic, ukrainian}=0.01(incompressible regime) and 0.6 (compressible regime), Ge=10 -5 and Pr=0.7
  6. Keywords:
  7. Bejan number ; Compressible and incompressible ; Entropy generation ; Fluid friction ; High gradient ; Local entropy generation ; Natural convection flow ; Side walls ; Square cavity ; Temperature values ; Entropy ; Germanium ; Heat transfer ; Natural convection ; Incompressible flow
  8. Source: International Communications in Heat and Mass Transfer ; Volume 37, Issue 9 , November , 2010 , Pages 1388-1395 ; 07351933 (ISSN)
  9. URL: http://www.sciencedirect.com/science/article/pii/S0735193310002083