Large - eddy simulations are carried out for the adjustment of convective boundary layer over heterogeneous surfaces . simulations are confined for zero mean - wind and flat terrain . surface heat - flux is set varying in 研究限于无风平坦地形条件,地面热通量在一个水平方向作非均匀变化平均地面热通量为0 . 15kms
When constructing senior highways in china , the project of twin - bore tunnel is often adopted in special geologic and topography districts in order to get better technological and economical purpose 我国在高等级公路的建设中,在特殊地质及地形条件的地区,为获得良好的技术经济效果,大量选择了连拱隧道方案。
Considering the port geological structure , landform , hydrology and investment conditions , the degree of the incline must be small . passengers must go across a long incline when they get on or down the ships 考虑到其港区地质构造与地形条件,水文条件和投资条件等因素,港口码头在建造时坡度都取值较小,乘客上、下船要走过坡道距离较长。
According to the robots ' requirement of working on the complicated terrain and the configuration and correlative parameters of the mobile robot studied here , two detecting means of the position and pose of mobile robot ' s platform are researched here 根据移动机器人在复杂地形条件下的工作要求以及所研究机器人的结构特点,设计了2种机器人平台位姿检测的方法。
Special analysis is made to see the impact of different boundary layer parameterization schemes on some factors which affect the heavy rainfall such as vertical velocity , divergence , vorticity , divergence of water vapor flux , se field and so on 结果表明:复杂地形条件下,特别是降水有明显日变化的地区,边界层的作用是十分重要的,这在暴雨时的纬向垂直环流结构中表现地非常明显。