解决湍流圆/平射流异常现象的数值研究

The Solution of Round-Jet/Plane Jet Anomaly Using GAO-YONG Incompressible Turbulence Equations

圆射流 /平面射流异常现象是湍流研究领域的一个著名的难题 ,是验证湍流微分方程模型的试金石。本文用 GAO-YONG不可压湍流控制方程对圆射流进行了数值验证 ,成功地解决了该难题 ,进一步证明了该方程对真实湍流的适定性和通用性。

The round-jet/plane-jet anomaly remains as a long-unsolved problem in turbulence, and it is the touchstone of a turbulence model of differential equations. In this paper, axisymmetric round jet is numerically simulated with GAO-YONG turbulence model. The calculation successfully simulates the flow and predicts a spreading rate of 0.086, which is close to the measured range of 0.086 to 0.093 and thus solves the round-jet/plane-jet anomaly problem. All the results further verify the adaptability and generality of the equations to real turbulent flow.