HEAT TRANSFER CHARACTERISTICS AND REYNOLDS STRESS BUDGET OF SPATIALLY ADVANCING TURBULENT FLOW IN A CURVED CHANNEL

被引：6

作者：

Matsubara, Koji ^{[1
]}

Miura, Takahiro ^{[1
]}

Sakurai, Atsushi ^{[1
]}

Yamazaki, Kenya ^{[1
]}

Takeda, Makoto ^{[1
]}

机构：

[1] Niigata Univ, Dept Mech & Prod Engn, Nishi Ku, Niigata 9502181, Japan

来源：

NUMERICAL HEAT TRANSFER PART A-APPLICATIONS | 2011年 / 60卷 / 03期

关键词：

DIRECT NUMERICAL-SIMULATION; COHERENT STRUCTURES; VORTICES; VISUALIZATION; WALL;

D O I：

10.1080/10407782.2011.588562

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Direct numerical simulation was performed for the spatially advancing turbulent flow and heat transfer in a two-dimensional curved channel equating the radius ratio to 0.92 or 0.8. The frictional Reynolds number was fixed at 150, whereas the Prandtl number was set at 0.71. According to the numerical result, the remarkable enhancement of heat transfer occurred on the outer wall, suggesting the organized vortex activated the heat transfer. The budgets of Reynolds stresses clarified that the onset and growth of the organized flow was assisted by the direct energy transfer from the mean flow.

引用

页码：234 / 253

页数：20

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