在曲线坐标系下运用非交错网格的 SIMPLE方法对电站锅炉炉内的湍流流动进行了数值模拟 ,导出了任意三维曲线坐标系下椭圆型 N-S方程的通用形式 ,得到了较为满意的结果 ,较好地解决了锅炉数值模拟中存在的燃烧器喷嘴处伪扩散严重的问题 ,为求解复杂区域内的传热传质、流动及燃烧问题奠定了基础 The non-staggered grid SIMPLE method was used to simulate the turbulent flow in the boiler and the general form of the elliptic NS equation in any three-dimensional curvilinear coordinate system was obtained. The satisfactory results were obtained. The problem of serious pseudo-diffusion at the burner nozzle in numerical simulation of boilers is well solved, which lays the foundation for solving the problems of heat and mass transfer, flow and combustion in complicated areas