摘要
Based on the 3D algebraic stress model and the Newton-Leibnitz equation,a new depth-average algebraic stress model (DAASM) is derived in this paper. The explicit Reynolds stress equations (ERSES), similar to those proposed by Boussinesq, arederived at the same time by an algebraic transformation from the depth-averaged Reynoldsstress equations. The ERSES can describe the anisotropic property of the Reynolds stress,so the DAASM can numerically simulate the anisotropic water transport. The new modelis tested by the hydraulic and thermal test data of drainage and intake in a shallow watercoolin pond. The results show the model can correctly predict the hydrulic and thermalproperties of large-volume water. In comparison with the depth-averaged k-ε model, it isfound that the new model is better.
Based on the 3D algebraic stress model and the Newton-Leibnitz equation,a new depth-average algebraic stress model (DAASM) is derived in this paper. The explicit Reynolds stress equations (ERSES), similar to those proposed by Boussinesq, arederived at the same time by an algebraic transformation from the depth-averaged Reynoldsstress equations. The ERSES can describe the anisotropic property of the Reynolds stress,so the DAASM can numerically simulate the anisotropic water transport. The new modelis tested by the hydraulic and thermal test data of drainage and intake in a shallow watercoolin pond. The results show the model can correctly predict the hydrulic and thermalproperties of large-volume water. In comparison with the depth-averaged k-ε model, it isfound that the new model is better.
