【摘要】 旋涡起主导作用的流动是当前世界前沿的研究领域之一。磁极极间的旋涡流动十分复杂 ,包含的物理内容也很丰富 ,一些流动现象、机理和规律还不完全清楚 ,采用数值模拟并结合风洞试验技术进行深入研究 ,对于理论探讨和实际工程应用都具有重要意义。应用人工压缩性方法求解了二维定常不可压雷诺平均Navier—Stokes方程 ,应用了Beam—Warming近似因子分解格式及其对角化形式 ,以及Baldwin—Lomax代数湍流模型 ,对水轮发电机通风系统流场进行了数值模拟。更多还原

【Abstract】 Vortex—dominated flow is one of the pre sent world research frontlines. The vortex flow between magnetic poles is very much complicated and contains very rich physical significance as well. While some of the phenomena, mechanism and laws of flow were not well known yet, in depth investigation was made by combining numerical simulaton with wind tunnel test for both theoretical exploration and practical engineering application. Numerical simulation was made for the flow field of the ventilation system for hydraulic power generating sets by solving 2D constant incompressible Renault mean Navier Stokes equation by an artificial compression method, and using the Beam Warming approximation factor disassembly format and its diagnalization form and the Baldwin Lomax algebral turbulence model.更多还原