查询词典 wind tunnel

A software for aided designing bolt of tunnel named ANSYSBOLT was designed on the basis of ANSYS finite element software. In the software environment, bolt supporting model of physical tunnel in tectonic stress field was structured according to physical parameters of coal and rock seam of some working face, and in conditions of different buried depth, bolt supporting structure and pre-tightening force, distributions of stress of surrounding rock of physical tunnel and its displacement were analyzed and calculated by ANSYSBOLT software. Then influence of different buried depth, bolt supporting structure and pre-tightening force on stability of roof and floor of tunnel was analyzed and finally feasible scheme of bolt supporting was gotten according to the analysis result.

在ANSYS大型有限元软件基础上开发了巷道锚杆辅助设计软件ANSYSBOLT；在该软件环境下，根据某工作面煤岩层的物理参数，建立了构造应力场条件下的实体巷道锚杆支护模型，并按照不同的埋藏深度、锚杆支护结构和预紧力条件，经软件分析计算，得出了实体巷道围岩应力及位移分布情况，进而分析了不同埋藏深度、锚杆支护和预紧力条件对巷道顶底板稳定性的影响，最终根据分析结果得出了可行的锚杆支护方案。

Based on the former drag reduction experiments of the bionic nonsmooth body of revolution models in the lowspeed wind tunnel, the simulation wind tunnel tests at the wind speed of 44 m/s were performed for the body of revolution models with the tail rectangularly disposed by three different nonsmooth structures, such as the convex dome form with the diameter/height of 1.0/0.5 mm, the dimple concave form with the diameter/depth of 1.0/0.5 mm, and the riblet form with the width/height of 1.0/0.5 mm, in contrast with the body of revolution model with smooth surface.

在前期进行的仿生非光滑旋成体模型低速风洞试验的基础上，将非光滑形态在旋成体模型上的排列方式固定为矩形布置，非光滑的尺寸固定为直径或宽度为1 mm，深度或高度为0.5 mm，在风速为44 m/s时，对布置在模型尾部的凸包形、凹坑形和棱纹形三种非光滑模型与表面光滑模型进行了对比模拟试验。

At first, the wind tunnel test and test data process of this study are introduced in detail. A method to calculate expected extreme values of time series with a long time interval is then proposed with its sub-sections based on the classical Gumbel theory for extreme values and the independence of observed extreme values. At last, the extreme values of the wind pressure coefficients of the present wind tunnel test are calculated with the proposed method and methods used widely at present, such as peak factor method, improved peak factor method and Sadek-Simiu method.

首先 介绍了风洞试验及试验数据处理的基本概况；然后在阐述经典Gumbel极值理论的基础上，根据观察极值的相互独立性推导了短时距下极值分布参数和长时距下极值分布参数的关系式，给出了一种由短时距样本推算长时距下的极值估算方法；最后基于风洞试验数据，将常用极值估算方法(峰值因子法、改进峰值因子法和Sadek-Simiu法)和该方法的计算结果进行了比较。

Contrast study on numerical simulation of dust prevention effect of wind-break sheet and wind tunnel test ;2. The simulation results show that the results of wind tunnel test agree with those calculated.

采用非结构网格，对强横风下青藏线桥梁上运行的棚车气动性能进行数值模拟，并对部分数值模拟的结果进行风洞实验验证。

SJG of place of ventilated take a breath order of engine of inclined fan drifting type: 2#- 8# wind force: 200 - 25000m3/h total pressure: 54 - 1200Pa characteristic: Use impeller of canister of bosomy form wind, cone-shaped hub, wind pressure tall, wind force big, noise province of report of low, bad news, structure is compact wait for an advantage, horizontal, vertical is installed all but, most apply to straight conduit and pressurization to send a platoon wind, material can use glass reinforced plastics or steel is made, also can make a place with a draught of housetop type, pass in and out can be added set muffle; Application: Industry and civil architectural send a wind the system.

SJG斜流式风机机号：2#－8#风力：200－25000m3/h全压：54－1200Pa特征：使用鼓型风筒、锥型轮毂叶轮，风压高、风力大、噪声低、耗电省、构架拮据等优势，卧式、立式装置都可以，最适用在直通道和加压送排风，材料可用玻璃钢或者钢制造，亦可作成屋子顶式、进岀风口可加设消音器；运用：工业制造业和民用健造的送排风体系。

GXF-I conduit is inclined sort fan engine order: 2#- 8# wind force: 200 - 25000m3/h total pressure: 54 - 1200Pa characteristic: Use impeller of canister of bosomy form wind, cone-shaped hub, wind pressure tall, wind force big, noise province of report of low, bad news, structure is compact wait for an advantage, horizontal, vertical is installed all but, most apply to straight conduit and pressurization to send a platoon wind, material can use glass reinforced plastics or steel is made, also can make a place with a draught of housetop type, pass in and out can add set muffle application: Industry and civil architectural send a wind the system.

最新供应专业生产供应管道斜流风机。 GXF-I通道斜流风机机号：2#－8#风力：200－25000m3/h全压：54－1200Pa特征：使用鼓型风筒、锥型轮毂叶轮，风压高、风力大、噪声低、耗电省、构架拮据等优势，卧式、立式装置都可以，最适用在直通道和加压送排风，材料可用玻璃钢或者钢制造，亦可作成屋子顶式、进岀风口可加设消音器运用：工业制造业和民用健造的送排风体系。

There were 8 groups and each groups had 8 cows in the experiment.groups A was the positive group, be feeded basic dietary and in the normal environment; groups B was basic dietary and in the improved environment ; Group C was feeded with basic dietary and NaHCO_3(120g/d/head) and Mg0(50g/d/head) and KCl(180g/d/head), in the environment with no spray and no wind; Group I is feeded with basic dietary and NaHCO_3 (120g/d/head) and MgO(50g/d/head) and KC1 (180g/d/head) and in the another environment with spray and wind; Group E was feeded,with basic dietary and traditional druggery additive in the environment with no spray and no wind; Group F was feeded with basic dietary and traditional druggery additive in the environment with spray and wind;Group G was feeded with basic dietary and NaHCO_3 (120g/d/head) and MgO(50g/d/head) and KCl (180g/d/head) and traditional druggery additive in the environment with no spray and wind; Group H was feeded with basic dietary and NaHCO_3( 120g/d/head ) and Mg0(50g/d/head) and KCl(180g/d/head) and traditional druggery additive in the environment with spray and wind.

试验分8个处理，每个处理8头奶牛，A处理为对照组，喂以基础日粮，处于常规环境(未喷雾，未机械吹风，下同)，B组为喂以基础日粮，处于改善环境：C组为基础日粮+NaHCO_3(120克/头。日)+MgO(50克/头。日)+KCl(180克/头。日)，处于常规环境：D组为基础日粮+NaHCO_3(120克/头。日)+MgO(50克/头。日)+KCl(180克/头。日)，处于改善环境；E组为基础日粮+中草药添加剂组，处于常规环境；F组为基础日粮+中草药添加剂组，处于改善环境；G组为基础日粮+NaHCO_3(120克/头。日)+MgO(50克/头。日)+KCl(180克/头。日)+中草药添加剂组，处于常规环境；H组为基础日粮+NaHCO_3(120克/头。日)+MgO(50克/头。日)+KCl(180克/头。日)+中草药添加剂组，处于改善环境。

The paper analyzes the shortage of traditional roadway measuring wind method,and by theoritical calculation of measurement,the wind amount is tested,and the roadway fixed central point method of wind measurement and the roadway s average wind velocity fixed-point method of wind measurement are proposed,and which solve the problem of low wind velocity and low credibility well.

分析传统井巷测风方法的不足，并通过风量测定的理论计算和对现场风量进行实际验证，提出了井巷中心点定点测风法和井巷平均风速点定点测风法，较好地解决了当前测定风速慢、可靠性差的问题。

The authors discuss a new numerical simulation method of the downburst wind loads on the basis of the previous research. Firstly, the wind speed is expressed as the sum of an instantaneous mean wind speed and an amplitude-modulating non-stationary fluctuating wind speed. Secondly, a new method based on the modified Osegguera and Bowles/Vicroy model to simulate the mean wind is presented and the fluctuating wind is simulated by a modified spectral representation method.

在将下击暴流风速表达为时变的平均风速和调制的非平稳脉动风速之和的前提下，本文采用基于改进的OBV模型Oseguera and Bowles/Vi-croy(OBV的方法来模拟平均风速，其平均风速直接由改进的OBV模型表达，而不同于已往研究中将平均风速表达为竖向风剖面与时间函数的乘积，并采用结合快速傅里叶变化的谐波叠加法来模拟调制的非平稳脉动风速。

AR model in linear filter theory is adopted to simulate pulsant wind. Combined with some typical cable-membrane structures, research on self-vibration of the structure has been conducted. Based on the previous work, the influence caused by the vertical wind component on the membrane roofs has been analyzed in time domain. It includes the vibration laws of the structure under separate horizontal wind component, separate vertical wind component and the collective horizontal wind component and vertical wind component. Significant conclusions have been drawn from the analysis.

然后本文采用线性滤波器法中的AR模型对风速场进行了模拟；之后又结合典型的张拉索膜结构研究了膜结构的自振特性；在此基础上，本文研究了索膜结构在竖向脉动风影响下的风振响应特性，其中分别研究了张拉索膜结构在单独水平风，单独竖向风以及水平风和竖向风共同作用下的振动规律，得出了有关重要结论。

Based on the relationship and the phenomenon model, an improved model of MR damper has been presented in this paper.

摘 要：本文在实验数据的基础上建立了磁流变阻尼器输出力与不同常电流控制量的关系，对现有的 p模型进行了改进。

I don't think our founding fathers were very fuckable.

我认为我们的开国元老没什么吸引力