numerical computing meaning in English
数值计算
Examples
- In this paper , based on the tide , tidal current and ocean wave numerical computing techniques and the constructive method of seabed terrain model , the fusion and visualization of multiple digital marine geographic environmental information for the nearshore marine environmental safeguard are locally realized by using the level of detail model and 3 - d rendering technique , which will provide theoretic and experiential basis for the study field in the future
摘要以潮汐、潮流和海浪数值的计算技术和数字海底地形模型的构造方法为基础，应用层次细节模型和三维渲染技术，完成了近岸海洋环境保障的多种数字海洋地理环境信息的融合与可视化的局部实现，为今后此领域的研究提供了理论和经验基础。 - The system properties of single - loop system , such as velocity , torque , bifurcated power , transmission efficiency are researched deeply using theoretical analysis and numerical computing , and gives new methods for designing which according to the design parameter a and combine with the system diffluent coefficient q and the ratio of x , p cell transmission . so the theoretical expressions for designing this kind of transmission is established . the design parameter a is put forward as the ratio of confluent power and the input power of single - loop system
通过对单环路系统的运动学和动力学特性、功率流特性、传动效率特性等所进行的理论分析和数值计算，提出了以单环路系统主支路功率大小与输入总功率的比值为关键设计参数的设计新方法，并结合系统的功率分流系数q和各组成单元的传动比，得到了单环路系统的速度、力矩、功率流、传动效率等计算公式，为该种传动类型的设计提供了必要的理论依据。 - Raft is regarded as rigid body , the interaction of piles , soil and excess pore pressure is simulated by bcflm , and load transfer function is used to simulate the pile in non - liner working situation . according to these analytical methods , the corresponding numerical computing program , consolidation pile raft interaction ( cpri ) , with advanced language c + + is accomplished
本文根据考虑土体固结的桩?土?承台共同作用理论，使用c + +分别编制了考虑土体固结的共同作用数值模拟计算程序cpri ( consolidationpilesraftinteraction )和不考虑土体固结的共同作用计算程序pri ( pilesraftinteraction ) 。 - With numerical experiments , the main work in this study is as follows : ( 1 ) the building of network parallel numerical computing platforms based on pvm on win32 system , the setting of environmental variables , the startup of pvm and the configuration of virtual machine are discussed . ( 2 ) the methods for the design of network parallel numerical computing programs based on pvm on win32 system are relatively detailedly explored in this study , including the basic pvm programming patterns , the decomposition of workload , the design of communication and the numerical stability of pvm parallel numerical algorithms . ( 3 ) the emphases are not only put on the discussion of several important factors which affect the performance of pvm parallel programs , including load - balancing , communication costs , network performance , task granularity , computer ’ s memory capacity and the number of processors , but also on the corresponding strategies for improving the performance of pvm parallel programs
本研究结合具体的数值试验,主要完成了以下工作: ( 1 )探讨了pvmonwin32的网络并行数值计算平台的构架,并行环境变量的设置, pvm的启动及虚拟机的配置等; ( 2 )较详细地讨论了基于pvmonwin32的网络并行数值计算程序设计的方法及注意事项,包括pvm基本编程模式的研究、任务的分解、通信的设计及pvm并行数值算法的数值稳定性等; ( 3 )重点研究了影响pvm并行程序性能的几个重要因素,包括负载平衡、通信开销、网络性能、任务粒度、处理机个数以及处理机内存容量问题等,并提出了相应的策略,以最大限度地提高pvm并行程序的性能; ( 4 )针对基于pvmonwin32的由桌面pc机联网而成的网络并行计算环境中,处理机的运算速度较快而处理机间的通信相对较慢的实际情况,将求解线性方程组的gauss - jordan消去法与gauss列主元消去法结合起来,给出了网上高效并行求解稠密线性方程组的无回代gauss列主元消去法,其算法处理机间的通信开销较少,实现了负载平衡和各处理机间的全并行工作; ( 5 )在考察求解线性方程组的jacobi迭代法和gauss - seidel迭代法并行性能的基础上,将两者的优越结合起来,给出了基于pvm的微机网络并行计算环境下求解线性方程组的一种分组gauss - seidel并行迭代算法。