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Heat transfer model for gas-liquid slug flows under constant flux

机译:恒定通量下气液弹团流的传热模型

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This paper investigates the mechanisms leading to enhanced heat and/or mass transfer rates in two-phase non-boiling slug flows. The problem is analyzed in a minichannel geometry subjected to a constant heat flux boundary. Local Nusselt numbers, obtained using Infrared thermography are analyzed in both entrance and fully developed flow regions. These novel measurements highlight the physics governing slug-flow heat transfer and results indicate that optimized slug geometries can yield up to an order of magnitude heat transfer enhancement. Finally, based on the physics identified, a heat transfer model is developed which is also applicable to similar mass transfer problems.
机译:本文研究了导致两相非沸腾团状流中传热和/或传质速率提高的机理。在经受恒定热通量边界的微通道几何结构中分析该问题。使用红外热像仪获得的局部Nusselt数在入口和充分发育的流动区域中都进行了分析。这些新颖的测量结果突显了控制团状流传热的物理原理,结果表明,优化的团状几何形状可产生高达一个数量级的传热增强。最后,基于确定的物理原理,开发了一种传热模型,该模型也适用于类似的传质问题。

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