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Investigation of entropy generation over a backward facing step under bleeding conditions

机译:渗流条件下向后台阶上熵产生的研究

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The current work investigates entropy generation around a backward facing step subjected to bleeding by using suction/blowing. The suction/blowing is imposed on the bottom wall of the step. Finite volume method with second order accuracy is used in the solution of the governing equations. The variation of local and overall entropy generation number is calculated. The distribution of entropy generation number on the top wall and the bottom walls of the step is estimated. Moreover, the average Bejan number is calculated over the entire domain. High values of Bejan number are identified on the top and the bottom walls. The effect of bleed coefficient on the entropy generation number and Bejan number are presented.
机译:当前的工作研究了通过使用抽吸/吹气在朝后台阶周围发生渗漏的情况下产生熵。抽吸/吹气作用在台阶的底壁上。在控制方程的求解中使用具有二阶精度的有限体积法。计算局部和整体熵产生数的变化。估计该台阶的顶壁和底壁上的熵产生数的分布。此外,平均Bejan数是在整个域内计算的。在顶壁和底壁上识别出较高的Bejan编号。提出了渗出系数对熵产生数和贝扬数的影响。

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