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首页> 外文期刊>International journal of chemical engineering >Study of the Pressure Drop and Flow Field in Standard Gas Cyclone Models Using the Granular Model
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Study of the Pressure Drop and Flow Field in Standard Gas Cyclone Models Using the Granular Model

机译：使用粒状模型研究标准气体旋风模型中的压降和流场

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A particle-laden flow inside solid gas cyclones has been studied using computational fluid dynamics (CFD). The effects of high temperatures and different particle loadings have been investigated. The Reynolds stress (RSM) model-predicted results, in the case of pure gas, are within engineering accuracy even at high temperatures. Using the granular mixture model for the cases of particle-laden flow, discrepancies occurred at relatively high loadings (up to 0.5 kg/m3). Since the pressure drop is strongly related to the friction inside the cyclone body, the concept of entropy generation has been employed to detect regions of high frictional effects. Friction has been observed to be important at the vortex finder wall, the bottom of the conical-part wall, and the interface separating the outer and the core streams. The discrepancies between the present numerical simulation and the experimental results taken from the existing literature, which are caused by the mixture and turbulence models simplifying assumptions, are discussed in this paper.
机译：使用计算流体动力学（CFD）研究了固体气体旋风内的粒子流量。已经研究了高温和不同颗粒载荷的影响。在纯气体的情况下，雷诺应力（RSM）模型预测结果即使在高温下也在工程精度范围内。使用颗粒混合物模型用于粒子载有粒子流动的情况，在相对高的载荷（高达0.5kg / m 3）处发生差异。由于压降与旋风体内内部的摩擦强烈相关，因此已经采用熵生成的概念来检测高摩擦效应的区域。已经观察到摩擦在涡旋发现壁，锥形部分壁的底部以及分离外部和芯流的界面上是重要的。本文讨论了本文的现有文献的本数值模拟与现有文献中的实验结果之间的差异，这篇论文讨论了简化假设的混合和湍流模型。

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