요동이 있는 밀폐용기내 낮은 Pr 액체의 자연대류에 관한 수치적 연구

DOI QR코드

DOI QR Code

모정하
Mo, Jeong-Ha

  • 발행 : 1998.03.01

초록

This study deals with the interaction between buoyancy-induced convection and externally imposed excitation in the form of harmonic rocking and the effect of the interaction upon heat transfer in low-Pr liquids. A wide array of system responses are discussed using the spectral collocation numerical technique. The superposition of buoyancy and Coriolis forces leads to complex fluid flow and heat transfer. The transition to chaotic convection is accelerated, and heat transfer rates are reduced as the enclosure is excited at the fundamental frequency of oscillation associated with the pure buoyancy-driven case. Average heat transfer rates are correlated for Pr=0.02 and 0.03. The heat transfer is affected more in the Pr=0.03 liquid than the case of Pr=0.02.

키워드

요동;진동대류;혼돈대류;코리올리력;분광배열법;위상궤적

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