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An Investigation of Simple Evaporation Models Used in Spray Simulations

机译:用于喷雾模拟的简单蒸发模型的研究

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摘要

In the present work, an unified derivation of simple evaporation models used in spray simulation is described and a new evaporation model is formulated. In the model, the Nusselt number, Sherwood number, and evaporation mass flux are derived using the traditional film theory. However, instead of determining the film thicknesses using the Nusselt and Sherwood numbers derived in the absence of high mass transfer rate, the film thicknesses are calculated from those derived from the fully numerical solutions which represent the realistic heal and mass transfer processes around a droplet. The model predictions are compared with the fully numerical solutions.
机译:在本工作中,描述了用于喷雾模拟的简单蒸发模型的统一推导,并制定了新的蒸发模型。在该模型中,使用传统的薄膜理论推导了Nusselt数,Sherwood数和蒸发质量通量。然而,不是使用在没有高传质速率的情况下得出的Nusselt和Sherwood数来确定薄膜厚度,而是根据从全数值解中得出的数值(代表液滴周围实际的传质和传质过程)来计算薄膜厚度。将模型预测与全数值解进行比较。

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