查询词典 aerodynamic

Second, the so-called thermal expansion will not reduce the disk head and the distance, as head of the aerodynamic principles of flight, under normal circumstances and always maintain a certain distance from the disc.

二、所谓的热膨胀，不会拉近盘体和磁头的距离，因为磁头的飞行是空气动力学原理，在正常情况下始终和盘片保持一定距离。

A numerical simulation study is conducted of the aerodynamic field characteristics of a 1000 t/h once through boiler double furnace.

本文对1000t／h直流炉单炉体双炉膛的炉内空气动力场进行了数值模拟研究。

Intra furnace aerodynamic field ; numerical simulation ; high temperature corrosion ; boiler ; double furnace

炉内空气动力场；数值模拟；高温腐蚀；锅炉；双炉膛

With the above method, flows in transitional region around cylinder, sphere double cone and Apollo capsule are simulated. The aerodynamic and flow characteristics are analyzed.

最后，采用本文发展的方法，对绕圆柱、球双锥和Apollo飞船的过渡区域流动进行了数值模拟，并对其气动特性、流场特征和流动现象进行了分析。

Using this method, the DSMC program is developed to simulate flows in transitional region around a sphere double cone and Apollo capsule, and the aerodynamic and thermal characteristics around the supersonic and hypersonic vehicles is investigated.

在此基础上建立了一套DSMC数值模拟程序，对球双锥和Apollo飞船在过渡区域流动进行了数值模拟，并分析了其过渡区域超音速、高超音速的气动力、气动热等问题。

In order to create structural optimization model with aeroelastic constraints, dual lattice method is used to evaluate the unsteady aerodynamic force and V-g method is used to estimate the critical flutter speed.

作者采用子结构技术进行了结构的静动力分析，推导出基于"静载模态"概念的子结构响应的灵敏度计算方法，使得子结构响应分析和灵敏度计算在程序上融为一体。

They are mechanical facilities in the control of electrics, hydraulic pressure and aerodynamic pressure.

摘要传统的机械设备与产品，多是以机械为主，是电气，液压或气动控制的机械设备。

It is an important half hardware-in-loop simulation equipment, which is often used to simulate the aerodynamic torque load on the missile rudder or elevon actuators in the flight.

它是地面半实物仿真系统中的一种重要专用设备，用来模拟飞行器舵机在飞行过程中所承受空气动力力矩载荷。

By using the CFD software FLUENT, the inner-flow field of centrifugal fans with ruled-surface impeller versus with enveloping surface impeller has been simulated. The static pressure distribution, the dynamic pressure distribution, the total pressure distribution, the turbulent intensity and the speed vector of the two kinds of centrifugal fans are then analyzed and compared. From the calculating results, we found that the pressure distribution, the speed vector and other parameters of the two kinds of centrifugal fans are basically same. This implies that the tool-path generating arithmetic for the machining of the impeller can meet the aerodynamic requirements of the centrifugal fan. Furthermore the method can provide proof for designing department to establish sound manufacturing tolerance for impeller.

最后采用CFD软件FLUENT，利用标准k-ε湍流模型，采用分离隐式求解器，分别对直纹面叶轮离心通风机和包络面叶轮离心通风机整体风机内部三维流场和单个通道流场进行了数值模拟计算，在计算结果的后处理中，对相同坐标值处的静压力、动压力、湍流强度和速度矢量等参数进行了分析与比较，结果表明：在相同的计算参数条件下所得到直纹面叶轮离心通风机和包络面叶轮离心通风机内部流场差别不大，从而揭示所采用的叶轮数控加工的刀位规划方法的规划误差对流体机械动力性能的影响不大，这也为设计部门制定合理的叶轮加工公差提供了依据。

The thermal efficiency of the boiler was obviously improved through perfection of combustion system, test of aerodynamic field in cold furnace chamber , adjustment of combustion in hot stat and reduction of exhaust fume temperature.

通过燃烧系统设备的完善化和冷态炉膛空气动力场的试验及热态燃烧调整，排烟温度降低，锅炉热效率明显提高，节能降耗效果显著

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。