직사각형 덕트에서 전단율에 의존적인 열전도율을 갖는 비뉴턴 유체의 열전달 향사아에 관한 수치적 연구

DOI QR코드

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김병석;신세현;손창현
Kim, Byeong-Seok;Sin, Se-Hyeon;Son, Chang-Hyeon

  • 발행 : 1997.06.01

초록

The present study investigates the effect of the shear rate-dependent thermal conductivity of non-newtonian fluids on the heat transfer enhancement in a 2:1 rectangular duct flow. An axially-constant heat flux and a peripherally-constant temperature boundary conditions(H1) was adopted for a top-wall-heated configuration. The present numerical results of Nusselt numbers for SRDC(Separan) show heat transfer enhancement over those of SRIC. The Nusselt numbers increased linearly as Reynolds numbers increased. The heat transfer enhancement is due to an increased thermal conductivity near the wall, which is attributed to the shear rate-dependence.

키워드

전단율 의존성;열전도율;비뉴턴 유체;열전달 향상