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为简化风口入流边界条件的描述 ,提出用N个简单开口代替不同方向出流的百叶风口 ,建立了N点风口模型 ,据此模型对不同出流条件的百叶风口射流进行了数值模拟 ,并就轴心速度衰减、射流扩展角及断面流速分布等与实验数据进行了对比。结果表明 ,当N =1或3时 ,模拟结果令人满意。
In order to simplify the description of the boundary conditions of the inlet flow, N louvers are proposed to replace the outflow louvers in different directions, and a N-point tuyere model is established. Based on this model, the jet of louvers with different outflow conditions is numerically simulated. Axial velocity attenuation, jet expansion angle and the distribution of cross-section velocity and experimental data were compared. The results show that when N = 1 or 3, the simulation results are satisfactory.