查询词典 numerical calculation

Exploring a new technology for snow-melting and deicing of airports tracks is the research background of this project. Through a great amount of experiments, numerical value calculation and theory analysis, a great deal of experiment data are attained, and the resonance law of carbon-fiber reinforced concrete under various power and ice-layer thickness conditions was found.A low-energy concuming, low cost and high thermal effect CFRC road surface concrete structurel material was developed. The snow-melting and deicing mechanism of CFRC was analyzed in the point of view of energy conservation, and the electric-thermal resonance law of road surface structural materials to CFRC concrete materials was set up.

本项目以新型机场跑道的冬季融雪化冰为研究背景，通过大量实验、数值计算与理论分析，获得了碳纤维增强机敏混凝土在不同功率、不同冰层厚度下的响应规律和大量试验数据，找到了一种能耗低、热效高、成本低的CFRC路面混凝土结构材料，并从能量守恒的角度分析了CFRC混凝土融雪化冰机理，建立了研究路面结构材料的导热性能对CRFC混凝土材料的电热响应规律。

In this paper, taking nodal injection power and voltage operation curve of PV node as foundation, according to the basic property of numerical characteristics of random variables and relevant equations for probabilistic load flow calculation the expectations of nodal current, reactive power at PV node and power at balancing node as well as computing formula of covariances are derived by different methods; the computation accuracy of various algorithms are compared and analyzed.

文章以节点注入功率和PV节点电压运行曲线为基础，依据随机变量数字特征的基本性质和概率潮流计算的相关方程，分别采用不同的方法推导了节点电流、PV节点的无功功率及平衡节点功率的均值和协方差计算公式，比较和分析了各种算法的计算精度。

To understand heat transfer characteristics of regenerative cooling in liquid propellant rocket nozzle, numerical simulation was employed. Three dimensional governing equations for hot gas, solid wall and coolant were established respectively, and coupled calculation of flow and heat transfer was carried out.

为了解液体火箭发动机喷管再生冷却的换热特点，采用数值模拟的方法，对内喷管燃气、壁面和冷却液建立不同的三维控制方程，进行流动和传热的耦合计算。

In this thesis,a numerical simulation for the flow field around the seat/occupant ejection seat system which acts an important role in the analysis and calculation of stability and flight line and savinglife is evaluated using full compressible N-S equation.

本文通过求解全可压N-S方程对二维弹射座椅人/椅系统的外流场进行了计算。

Numerical control system through research, analysis of the mechanical part of the X52K vertical milling machine, feed servo system design and calculation, and further to the electrical control system for NC transformation, the use of computers to vertical, horizontal feed system for open-loop control, demand In the vertical and horizontal with straight lines and circular interpolation function, and the vertical, horizontal pulses are equivalent 0.01mm / pulse, control X to, Y coordinates of the two.

经过对数控体系的研讨，阐发了X52K立式铣床的机器部门、进给伺服体系等的计划盘算，进一步对电器控制体系举行数控改革，使用微机对纵向、横向进给体系举行开环控制，要求在纵向和横向具有直线和圆弧插补功效，且纵向、横向的脉冲当量均为0.01mm/脉冲，控制X向、Y向两个坐标。

The second-order Godunov method based on adaptive unstructured grids is applied to solve two-dimensional Euler equations. Methods for the calculation of numerical conservative fluxes passing through the triangle edge are given.

2建立了基于非结构网格的高阶Godunov格式，给出了一种确定通过三角形网格单元边界通量函数的方法，并对单调约束条件进行了改进。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。