지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술대회자료
- 저자정보
- 발행연도
- 2011.5
- 수록면
- 187 - 190 (4page)
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초록· 키워드
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Double-diffusive convection in a vertical annulus filled with a fluid-saturated porous medium are numerically investigated with the aim to understand the effect of a discrete energy and solute source on the fluid flow and heat and mass transfer rate. The porous annulus is subject to heat and mass fluxes from a portion of the inner wall, while the outer wall is maintained at uniform temperature and concentration. In the formulation of the problem, the Darcy-Brinkman model is adopted to the fluid flow in the porous annulus. The influence of main controlling parameters, such as thermal Rayleigh number, Darcy number, Lewis number, buoyancy and radius ratios are investigated on the flow patterns, and heat and mass transfer rates at different locations of the heat and solute source. The numerical results elucidates that the flow structure and the rates of heat and mass transfer rates strongly depends on the location of the heat and solute source. Further, the buoyancy ratio at which flow transition and flow reversal occurs is significantly influenced by the thermal Rayleigh number, Darcy number, Lewis number and the segment location. The average Nusselt and Sherwood numbers increases with an increase in radius ratio, Darcy and Rayleigh numbers. It has been discovered that the location for stronger flow circulation is not associated with higher heat and mass transfer rates in the porous annular cavity.
목차
ABSTRACT
INTRODUCTION
MATHEMATICAL FORMULATION AND NUMERICAL METHOD
RESULTS AND DISCUSSION
REFERENCES
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UCI(KEPA) : I410-ECN-0101-2013-410-000695262