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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2012.1
- 수록면
- 277 - 286 (10page)
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The isothermal and non-isothermal viscoelastic flow of Phan-Thien-Tanner (PTT) fluids is considered in lid-driven polar cavity geometry, using a numerical solution method with parameter continuation technique. Thermoelastic effects, in terms of elastic/elongational effects and viscous dissipation, are demonstrated by the changes in vortical structure, temperature/stress distributions and heat transfer characteristics in the curved cavity. Central vortex/maximum temperature location shifts are observed under elastic and elongational (strain hardening and strain softening/shear thinning) effects for isothermal and non-isothermal conditions. The growth in size and strength of a secondary vortex is denoted in the downstream stationary corner of the cavity for the viscoelastic fluid under strain hardening, which also introduces an increase in stress gradients. Viscous heating is observed with elongational effects near the central vortex in the cavity. Stress components and their gradients decrease under viscous dissipation. The changes in temperature field and heat transfer properties in the cavity are revealed.
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참고문헌 (21)
참고문헌 신청
Al- Mubaiyedh, U.A. / 2002 / The effect of viscous heating on the stability of Taylor-Couette flow / J. Fluid Mech 462:111~132
Coelho, P.M. / 2003 / Thermal entry flow for a viscoelastic fluid: Graetz problem for the PTT model / Int. J. Heat Mass Tran 46:3865~3880
Darbandi, M. / 2008 / Developing implicit pressure weighted upwinding scheme to calculate steady and unsteady flows on unstructured grids / Int. J. Numer. Meth. Fluid 56:115~141
Dris, I. / 1998 / Flow of a viscoleastic fluid between eccentric cylinders: impact on flow stability / J. Non- Newtonian Fluid Mech 80:59~87
Fattal, R. / 2005 / Time-dependent simulation of viscoelastic flows at high Weissenberg number using the log-conformation representation / J. Non-Newtonian Fluid Mech 126:23~37
Coelho, P.M. / 2003 / Thermal entry flow for a viscoelastic fluid: Graetz problem for the PTT model / Int. J. Heat Mass Tran 46:3865~3880
Darbandi, M. / 2008 / Developing implicit pressure weighted upwinding scheme to calculate steady and unsteady flows on unstructured grids / Int. J. Numer. Meth. Fluid 56:115~141
Dris, I. / 1998 / Flow of a viscoleastic fluid between eccentric cylinders: impact on flow stability / J. Non- Newtonian Fluid Mech 80:59~87
Fattal, R. / 2005 / Time-dependent simulation of viscoelastic flows at high Weissenberg number using the log-conformation representation / J. Non-Newtonian Fluid Mech 126:23~37
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