【摘要】 本文从三维雷诺方程和物质输运方程出发,导出水深平均的二维K-ε紊流模型,运用控制体积法对方程组进行离散,采用SLMPLE计算程式,模拟计算扩散器近区流场和浓度场.通过物理模型试验,验证数值模型,计算结果与试验值十分吻合.更多还原

【Abstract】 The steady two-dimensional flow and concentration field induced by a diffuser in open channels are obtained by a numerical solution of the depth-averaged k-ε equations based on integrating three-dimensional Reynolds equations and scalar equation. The numerical scheme which uses the control volme method and SIMPLE method is validated against detainled laboratory experiments for a wide range of ambient conditions.更多还原