在环境模拟实验室中利用阻尼网对实验区形成的近地层风速廓线进行了数值模拟和实验研究．阻尼网的布置方案以变孔隙率阻尼网作为指导，选用30目和16目定孔隙率阻尼网4种不同高度的混合式布置方式．数值模拟采用Fluent软件，将结构复杂的阻尼网简化为具有一定厚度的多孔介质模型，湍流模型为标准κ-ε模型,结果表明可将阻尼网作为多孔介质处理，定孔隙率阻尼网的组合可在短实验段内形成所需近地层的风速廓线，模拟值与实验值吻合良好．%The numerical simulation and the experimental test are used to investigate the formation of the wind profile of the neutral atmospheric surface layer by screens in the environment simulation laboratory. Taking the screen layout program with variations of porosity of screens as a guide, 30 meshes and 16 meshes with fixed porosity of screens with respective heights of four screen layer collocations are selected. The complex screens are simplified as the porous media model and the k-~ model in using the software Fluent. The results show that the screens can be simulated with the porous media and the wind profile can be formed by the compounding of fixed porosity screens in a short experimental section. The simulation results agree well with those of experiment.
展开▼
