Journal of computational fluids engineering (한국전산유체공학회지)
- Volume 4 Issue 2
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- Pages.9-16
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- 1999
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- 1598-6071(pISSN)
Numerical analysis on heat transfer due to buoyancy force of viscoelastic fluid
점탄성 유체의 부력에 의한 열전달 수치해석
- Published : 1999.09.01
Abstract
The present study investigates flow character and heat transfer behaviors of viscoelastic non-Newtonian fluid in a 2:1 rectangular duct. An axially-constant heat flux on bottom wall and peripherally constant temperature boundary condition(H1) was adopted. The Reiner-Rivlin fluid model is used as the normal stress model for the viscoelastic fluid and temperature-dependent viscosity model is adopted. The present results show a signifiant change of the main flow field which causes a large heat transfer enhancement. This phenomena can be explained by the combined effect of buoyancy, temperature-dependent viscosity and viscoelastic property on the flow.
Keywords