摘要
将SIMPLE算法与RNGk—ε湍流模型相结合，通过求解三维Navier—Stokes方程，完成了空调外机轴流风扇全流场三维数值计算。求解区域采用非结构化网格进行离散，以进、出口压力为边界条件，采用运动参考系模型实现动一静交界面间的数据传递。在轴流风扇内流场计算的基础上着重分析了速度场及压力场的分布规律。研究结果对轴流风扇结构的优化设计及噪声控制具有重要参考意义。
Numerical simulation of the three--dimensional turbulent flow in the whole--flow field of an axial--flow fan is performed. Unstructured grids are used to discrete the computational domain. Pressure boundary conditions are specified to the inlet and the outlet. The SIMPLE algorithm, in conjunction with the RNG k--~ turbulent model, is used to solve the three--dimensional Navier- Stokes equations. The moving reference frame is adopted to transfer data between the interfaces of the rotating field and the stationary field. Based on the calculation of the inner--flow in the fan, the velocity field and pressure field are further analyzed. The simulation results are of important significance to the optimal design and noise control of the fan.
出处
《江西蓝天学院学报》
2011年第4期32-36,共5页
Journal of Jiangxi Blue Sky University
关键词
空调
轴流风扇
全流场
数值模拟
air conditioner
axial fan
whole-- flow field
numerical simulation
