수평동심환상공간내 자연대류의 다중해에 관한 수치적 연구

DOI QR코드

DOI QR Code

정재동;김찬중;이준식;유호선
Jeong, Jae-Dong;Kim, Chan-Jung;Lee, Jun-Sik;Yu, Ho-Seon

  • 발행 : 1997.02.01

초록

Steady-state two-dimensional natural convective heat transfer in horizontal cylindrical annuli was studied by solving the governing equations based on the primitive variables. Emphasis was put on the occurrence of the multiple solutions at a given set of parameter values, and on the determination of the bifurcation points at which those multiple solutions begin to branch out. The multicellular flow pattern from the results of melting process in an isothermally heated horizontal cylinder for high Rayleigh numbers, was used as initial guesses for the field variables. This was succeeded in new bifurcation point to tetracellular solutions for an identical set of parameter variables of previous works. The close examination of flow pattern transition around bifurcation point was also conducted. It was found that the mechanisms of flow transition are different depending on the critical Rayleigh number of bifurcation point.

키워드

다중해;자연대류;다중셀;유동천이