THE LEWIS NUMBER UNDER SUPERCRITICAL CONDITIONS

K.HARSTAD; J.BELLAN

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THE LEWIS NUMBER UNDER SUPERCRITICAL CONDITIONS

机译：超临界条件下的刘易斯数

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An effective Lewis number is calculated for situations where temperature and mass fraction gradients are very large by defining effective thermal and mass diffusivities; such situations may occur in systems where there is more than one chemical component, and in particular under supercritical conditions. The definitions evolve from a model assuming that derivatives of certain functions are small with respect to those of the dependent variables. In the model, Soret and Dufour effects are included and Shvab-Zeldovich-like variables are defined to remove the coupling between the operators of the differential equations for temperature and mass fraction.

机译：通过定义有效的热扩散率和质量扩散率，可以计算出温度和质量分数梯度非常大的情况下的有效路易斯数。这种情况可能发生在化学成分不止一种的系统中，尤其是在超临界条件下。这些定义是从一个模型演化而来的，该模型假定某些函数的导数相对于因变量的导数较小。在模型中，包括了Soret和Dufour效应，并定义了类似Shvab-Zeldovich的变量，以消除温度和质量分数的微分方程算子之间的耦合。

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《International Journal of Heat and Mass Transfer》 |1999年第6期|961-970|共10页
作者
K.HARSTAD; J.BELLAN;
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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种 eng
中图分类热力工程理论;热学;
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THE LEWIS NUMBER UNDER SUPERCRITICAL CONDITIONS

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