撞击反应流熵产分析
首发时间:2013-02-25
摘要:撞击反应流是一种基础研究及工程应用中常见的流动现象。迄今为止对撞击反应流的特性展开了大量研究,然而对于撞击反应流中熵产规律的讨论却非常少。在本文中我们第一次详细分析了燃料当量比和气体雷诺数对撞击反应流的熵产的影响。通过本研究,几个撞击反应流特有的熵产规律被发现。特别是虽然在撞击反应流中由于流动产生的熵产值很小,但是不能忽略,这是与射流熵产区别最大的特点。另外根据不可逆因素所占主导地位,可将整个区域化分为两部分。总熵产是燃料当量比和气体雷诺数的线性函数。
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Entropy generation in impinging reactive flow
Abstract:Impinging reactive flow is commonly found in basic research as well as in engineering applications. So far there have been a lot of studies on impinging reactive flow. However, the research on entropy generation in impinging reactive flow is quite sparse. In this paper the effects of the Reynolds number and equivalence ratio on entropy generation in impinging reactive flow are discussed. Especially, in impinging reactive flow entropy generation due to viscosity can not be neglected, which is different from that in jet flow. The whole investigated domain can be divided into two zones according to the dominant irreversibility. The total entropy generation depends linearly on the Reynolds number and equivalence ratio.
Keywords: Entropy generation analysis impinging flow reactive flow
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