【摘要】 为了获得高分辨率、高精度及快速的数值模拟计算成果,以便解决复杂边界的工程实际问题,本文研究了通用形式表示的湍流代数应力模型流动基本方程组在拟合坐标系中的转换。通过该模型方程组的转换,并结合具有生物化学作用过程的生态子模型,建立了曲线坐标下三维水动力学的生态综合模型,便于复杂边界工程问题的方程组求解及对未来情况的预测和评价。更多还原

【Abstract】 The conversion of basic equation sets for algebraic stress turbulence model in Cartesian corrdinate system into body-fitted curvilinear coordinate system is studied. Based on the sub-model of hydrodynamic and the nitrogen-based biological sub-model describing the reaction process of biochemistry, the 3-D comprehensive eco-hydrodynamic model in curvilinear coordinates is established. The model can be used to solve the equation sets for calculating the flow field in engineering practice with complicated boundary conditions.更多还原