| 1. | The effect of lateral boundary condition , the river regime and the bed material on lateral erosion are analyzed 结果表明:水库下游均会有河岸侵蚀发生,但初期一般以下切为主,后期以展宽为主。 |
| 2. | As for non - uniform horizontal ground stress , it is realized generally by applying non - uniform pressure load on the lateral boundary / boundaries of the calculation model 对于非均匀的水平地应力,一般是在计算模型的侧面边界上施加非均匀荷载来实现。 |
| 3. | Wang linfang ( 1978 ) , on the horizontal lateral boundary condition for the hemispheric forecast , proceedings of the 2nd national conference on nwp , pp . 226 ? 236 ( in chinese ) 王磷舫( 1978 ) ,半球预报的水平侧向边界条件。第二届全国数值预报会议论文集226 ? 236页(中文) 。 |
| 4. | The lateral boundary nodes of the soil finite element mesh are tied together and the bottom of the mode is imposed with spring - damper boundary so that the dynamic interaction between soils and structures can be fully taken into consideration 地基中通过设置底部弹簧一阻尼器边界和侧面捆绑边界以考虑土?结构的相互作用。底部全面考虑了边界的阻尼及刚度。 |
| 5. | The lateral boundary nodes of the foundation finite element mesh are tied together and the side of and the bottom of the model is imposed with transmitting boundary so that the dynamic interaction between structures and foundations can be fully taken into consideration 地基采用平面应变四结点等参单元离散,在地基有限网格中设置底部及侧面透射边界和侧面捆绑边界以考虑结构?地基的相互作用。 |
| 6. | Because the main drive mechanism is bottom water drive and the effects of lateral boundaries are negligible , it is assumed the gas reservoir is infinite with an impermeable upper boundary and a constant pressure lower boundary , without losing generality 由于底水气藏的产气主要由底水驱动而得,侧边边界影响可忽略,故假定气藏由上边界封闭和下边界定压的无限大区域所导出的产能公式便具有普遍意义。 |
| 7. | The finite element model and result are given . the influence on displacement of different finite element model ' s lateral boundary and the cavities " radius and the variety of dynamic stress concentration at different ratio of long - axis divided to short - axis and material are discussed 给出了有限元模型和计算结果,讨论了有限元横向边界不同和孔径大小不同的情况下对位移的影响,还讨论了不同长短轴比和不同材料情况下动应力集中系数的变化。 |
| 8. | At the end of this paper , two methods are given out to solve this problem : ( 1 ) to decrease the width to height ratio of the calculation model , make it not greater than 1 ; ( 2 ) to restrict horizontal displacement of lateral boundary / boundaries and to directly assign ground stress in the field of calculation model 解决这一问题的方法有两种: ( 1 )使计算模型的宽高比尽量等于或小于1 ; ( 2 )约束计算模型侧面边界的水平位移,在计算域内部给水平地应力直接赋值。 |
| 9. | This plan makes it true that the medium - term numeric forecasting model ( t106 ) nest mesoscale numeric forecasting model ( mm5 ) , and it can change the lateral boundary of mesoscale model every 3 hours and ensures the real time of the numeric weather forecasting in the existing communication condition 该方案实现了中期数值预报模式t106与中尺度数值预报模式mm5的异模式嵌套,能每隔3小时置换中尺度模式的侧边界,并且在现有通信条件下,能确保数值天气预报的实时性要求。 |
| 10. | Hunan limited - region numerical weather prediction system is based upon the fifth - generation psu / ncar meso - scale model ( version 3 . 4 ) , named mm5 which is a non - hydrostatic model . the initial and lateral boundary conditions of the system are generated from the output of the t213 model of the national meteorology center ( nmc ) and the routine observation data of surface and high levels 湖南省有限区域数值天气预报系统是以psu / ncar的mm5v3 . 4 (第五代中尺度模式版本3 . 4 )非静力中尺度模式为基础,与国家气象中心t213模式输出场资料连接,并应用最临近常规高空、地面观测资料做初始场及参数修订,在银河机群服务器系统yh / cs16并行运算环境下运行的中尺度数值模式。 |