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首页> 外文期刊>Numerical Heat Transfer, Part B. Fundamentals: An International Journal of Computation and Methodology >Effect of various thermal boundary conditions on natural convection in a trapezoidal cavity with linearly heated side wall(s)
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Effect of various thermal boundary conditions on natural convection in a trapezoidal cavity with linearly heated side wall(s)

机译：各种热边界条件对带有线性加热侧壁的梯形腔中自然对流的影响

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摘要

A penalty finite-element-based study has been carried out for natural-convection flow in a trapezoidal cavity with uniformly heated bottom wall and linearly heated and/or cooled vertical wall(s) in the presence of an insulated top wall. For linearly heated side walls, symmetry in flow patterns is observed, whereas secondary circulation is observed for the linearly heated left wall and cooled right wall. The local Nusselt number indicates reversal of heat flow at the side walls or the left wall. The average Nusselt number versus Rayleigh number illustrates that the overall heat transfer rate at the bottom wall is larger for the linearly heated left wall and cooled right wall.
机译：已经对基于梯形腔的自然对流流动进行了基于惩罚性有限元的研究，该梯形腔具有均匀加热的底壁和线性加热和/或冷却的垂直壁，并且存在绝热的顶壁。对于线性加热的侧壁，观察到流型对称，而对于线性加热的左壁和冷却的右壁观察到二次循环。局部努塞尔数表示侧壁或左壁处的热流逆转。平均努塞尔数与瑞利数的关系表明，线性加热的左壁和冷却的右壁的底壁总传热率较大。

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