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首页> 外文期刊>Numerical Heat Transfer, Part A. Application: An International Journal of Computation and Methodology >Numerical investigation of jet impingement with cross flow - Comparison of Yang-Shih and standard k-epsilon turbulence models
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Numerical investigation of jet impingement with cross flow - Comparison of Yang-Shih and standard k-epsilon turbulence models

机译：横流射流冲击的数值研究-Yang-Shih与标准k-ε湍流模型的比较

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摘要

Computational fluid dynamics models are used to predict the heat transfer distribution on a smooth surface under an array of angled impinging jets. The three-dimensional numerical models simulate impingement with cross flow in one direction. Jet angle is varied between 30 degrees, 60 degrees, and 90 degrees as measured from the smooth flat impingement surface. Conjugate conduction in the heated boundary is included in the analysis. Two turbulence models are examined, the standard k-epsilon model and the Yang-Shih model. Local and average heat transfer coefficients are compared with test data for 30 test cases. The Yang-Shih model was able to predict average Nusselt number within 2-30%. The standard k-epsilon model predicts average Nusselt number with 0 to nearly 60% error.
机译：计算流体动力学模型用于预测在一系列成角度的撞击射流下光滑表面上的传热分布。三维数值模型模拟了一个方向上的横流碰撞。从光滑的平坦撞击表面测量，喷射角在30度，60度和90度之间变化。分析中包括加热边界中的共轭传导。检查了两种湍流模型，即标准kε模型和Yang-Shih模型。将局部和平均传热系数与30个测试案例的测试数据进行比较。 Yang-Shih模型能够预测2-30％的平均Nusselt数。标准的kε模型预测平均努塞尔数，误差为0到接近60％。

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