| 1. | An experimental study on the turbulent boundary layer flow field and its noise
湍流边界层流场与噪声实验研究 |
| 2. | Experimental study on the turbulent boundary 1mm layer flow over riblets surface
沟槽面湍流边界层结构实验研究 |
| 3. | Numerical simulations of mountain gravity waves generated by multi - layer flow over an isolated mountain
三维多层流动过孤立山脉产生的山脉重力波的数值试验 |
| 4. | Preliminary observation on ultraviolet emission spectra in non - equilibrium 2 - d hypersonic blunt body shock layer flow
二维高超声速钝体激波层紫外辐射的实验观察 |
| 5. | The direct numerical simulation methods for turbulent spots in the channel , open - channel and boundary layer flows are built respectively . effective algorithms composed of time - advancing , over - relax iteration and multiple grid methods are planned to raise computational efficiency
分别建立了适用于在槽道、明渠和平板边界层流动中直接模拟湍斑的数值方法，并精心设计了时间推进、超松弛迭代和多重网格等高效算法，以提高计算效率。 |
| 6. | The numerical models with the wall impulse as initial perturbation of turbulent spots were proposed . the above compact difference systems are used in the several typical flows , such as . the channel , open - channel and boundary layer flows the various complicated boundary conditions satisfying n - s equations are carefully conducted
建立了以壁面脉冲为初始扰动的湍斑数学模型，并将导出的navier - stokes方程的紧致差分方程组应用于槽道、明渠和平板边界层等典型流动，提出了严格满足navier - stokes方程的边界条件。 |
| 7. | The main results of the wind tunnel experiment on the 1 200 model of the chinese national grand theatre were introduced . at first , the wind pressure distributions of its semi - ellipsoidal surface in an atmospheric boundary layer flow were simulated , and the effect of the surface roughness was researched . the results indicated a reasonable regularity of its wind loading in various wind directions . on the problem of the environmental influence , it demonstrated that there existed a great effect for the pressure distribution of the great theatre when the grand hall is at east
介绍中国国家大剧院模型表面风荷载的风洞实验结果。首先对它的半椭球表面在大气边界层中的风压分布及增加表面粗糙度的影响进行研究，实验结果表明在不同风向下它的风荷载具有很好的规律性。有环境影响的对比实验结果表明人民大会堂对大剧院的风荷载有较大的影响。 |
| 8. | 3 . the characteristics of boundary layer ' s transition , shape and separation are researched . the details as follows : ( l ) airfoil surface is turbulent boundary layer flows ; ( 2 ) velocity figure changed unsteady near the point of boundary layer separation due to randomicity of turbulent flow ; ( 3 ) the airfoil have better state of boundary layer separation and poor stall characteristics because of the upper surface of airfoil is flat
给出了该翼型的附面层特性：翼型表面基本为湍流附面层；在靠近附面层分离位置处，速度型形状、特别是靠近翼型表面的底部速度型形状变化不定，是湍流流动的随机性所致；该翼型具有较好的附面层分离形态，但在失速迎角附近，附面层分离形态变化剧烈、失速特性差，是翼型上翼面形状较为平坦所致。 |
| 9. | Refined grids were utilized in a large - eddy simulation model for obtaining high - resolution planetary boundary data and analyzing surface layer turbulence . simulation results showed that refined meshes reduced turbulent contributions of subgrid scales , sensitivity of simulation results to sgs parameters decreased , and features of the whole boundary layer were explicitly resolved better . results also revealed flux - profile relationship correctly in surface layer and a good agreement of turbulent velocity characters with observation . therefore , it concluded that the les method was able for simulation of surface layer flow and turbulence , and might be used for further applications
采用加密网格的大涡模式获取边界层风温场的高分辨率模拟结果，并据以分析近地面层大气的湍流特性。结果表明，较小的网格尺度使次网格湍流贡献率大为降低，模式计算结果对次网格参数的依赖性减小，边界层整体特征得到更好的反映。同时，模拟出的近地面层通量廓线关系及湍流速度特征与实际观测结果吻合甚好，表明模式具有反映近地面层平均运动和湍流特性的能力。 |
