【摘要】 本文对用吹吸气流隔断局部空间时的气流运动进行基础研究。本研究的气流流动假定为二维、湍流、等温和稳定流动。动量方程式中的从属变量选用流函数和涡度(ψ—ω),湍流动能方程选用一方程式模型(K—L模型),以此作为吹吸气流流动的数学模型。数值解析结果与实验结果比较表明,用上述方法推导出的数学模型和计算程序能较好的反映实际流动情况。本研究对吹吸气流隔断局部空间的研究、设计、现场调试将具有一定的理论价值和工程应用价值。更多还原

【Abstract】 This paper presents the basic studies of push-pull flow separating a local part of space without partitions. It is assumed that the flow is dtwo-imensional, isothermal, turbulent and steady.The stream function and vorticity(-4)are used as dependent variables in the equation of momentum. Turbulence of the push-pull flow is numerically simulated by the one-equation K-L model. The results of calculation using this method substantially agree with the visualized experiments of streams.更多还原