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首页> 外文会议>The 2001 ASME International Mechanical Engineering Congress and Exposition, 2001, Nov 11-16, 2001, New York, New York >CFD MODELING OF FREE SURFACE AND ENTRAINMENT OF BUOYANT PARTICLES FROM FREE SURFACE FOR SUMBERGED JET SYSTEMS
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CFD MODELING OF FREE SURFACE AND ENTRAINMENT OF BUOYANT PARTICLES FROM FREE SURFACE FOR SUMBERGED JET SYSTEMS

机译：浸入式射流系统的自由表面的CFD建模和自由表面的浮游颗粒夹带

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摘要

For a submerged jet, there are many design characteristics to explore for better mixing of buoyant panicles (BP). Industries are facing difficulties in mixing of BP. Higher turbulence favors mixing, but mixing of BP has always been an art. Submerged jet (SJ) or impinged jet (IJ) is one of the ways to disperse BPs. For a SJ, modeling of free surface is important when the jet is not deeply submerged (~ 10 mm) in the liquid bath. In this research project, the free surface (surface between air and liquid) for a SJ system in a cylindrical liquid bath and entrainmenl of BPs has been studied with CFD analysis. The solution parameters (velocity profile and center line velocity) are validated against experimental LDV data generated. The use of 2D axisymmetric geometries minimized the computational cost. To overcome the computational burden of tracking individual particles, the dispersion of particles/turbulent fluctuations were determined by a Panicle Cloud Model.
机译：对于水下喷射器，有许多设计特征可以探索，以更好地混合浮力穗（BP）。行业在混合BP方面面临困难。较高的湍流有利于混合，但是BP混合一直是一门艺术。淹没式射流（SJ）或冲击式射流（IJ）是分散BP的方法之一。对于SJ，当射流未深浸入液浴中（约10 mm）时，自由表面的建模很重要。在该研究项目中，通过CFD分析研究了SJ系统在圆柱形液体浴中的自由表面（空气和液体之间的表面）和BP的夹带。针对生成的实验LDV数据验证了解参数（速度曲线和中心线速度）。二维轴对称几何的使用使计算成本最小化。为了克服跟踪单个粒子的计算负担，通过Panicle Cloud模型确定了粒子的分散/湍流波动。

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