Firstly numerical simulations of 2D turbulence flow over trains with wall and without wall are performed so as to investigate mesh, turbulence model, boundary conditions and relative parameters, at the same time, through the analysis characteristics of flow field and aerodynamic forces are acquired for the train under static condition.

首先進(jìn)行列車有擋風(fēng)墻和無擋風(fēng)墻情況下的二維湍流繞流數(shù)值計(jì)算分析狼友视频免费看，研究模型網(wǎng)格日韩孕妇自拍视频网站大全在线观看、湍流模型igao视频激情在线、邊界條件以及有關(guān)的參數(shù)設(shè)置和選取老熟女毛多一区二区，并獲得列車在二維繞流情況下靜止時(shí)的流場(chǎng)特性與氣動(dòng)力。

Firstly, the gaseous turbulence statistics of single phase flow, derived from PIV data, were compared with documented DNS results, and it demonstrated the feasibility of turbulence measurement using PIV technology.

本文首先比較了采用傳統(tǒng)PIV算法測(cè)量的單相湍流統(tǒng)計(jì)量與文獻(xiàn)中直接數(shù)值模擬的結(jié)果性爱在线观看，證明了PIV測(cè)量流場(chǎng)湍流量的可行性与子乱互换乱婬视频。

The influence of inlet turbulence intensity on the velocity, temperature, turbulence kinetic, friction coefficient and Nusselt number is limited on a limited region which is smaller than 30d.

5旋轉(zhuǎn)螺旋管道內(nèi)的入口湍流強(qiáng)度對(duì)流動(dòng)和溫度場(chǎng)結(jié)構(gòu)国产AⅤ熟女乱视频、湍動(dòng)能、摩擦系數(shù)以及Nusselt數(shù)的影響都局限在距離入口端不超過30倍管道直徑的有限長(zhǎng)度內(nèi)亚洲三级乱伦一区二区。

The gas phase was described by a standard k-ε turbulence model and the solid phase was described by the kinetic theory and kp turbulence model.

其中亚洲色图国产专区，氣相湍流行為以k-ε模型描述；顆粒相的碰撞行為以顆粒流的動(dòng)力學(xué)模型表達(dá)福利在线国产；而湍流行為以kp模型描述免费A级毛片无卡免费视频。

The equation of induced magnetic field was set up to calculate the Lorentz force, and the modified k-ε turbulence model under magnetic force was used to measure the viscosity of turbulence.

分別建立誘導(dǎo)磁場(chǎng)方程求解洛倫茲力和磁場(chǎng)作用下的k-ε湍流模型求解湍流粘度，數(shù)值模擬了不同強(qiáng)度磁場(chǎng)作用下的磁控等離子體流動(dòng)和傳熱特性老司机午夜免费精品视频在线观看。

First, experimental datum is analyzed and it is found that the shallow water ocean internal wave spectrum is different from that of the deep ocean GM spectrum. Then, the theory of weak turbulence is systematically summarized, and Lvov and Tabak's method of obtaining the deep ocean internal wave spectrum is introduced. They applied the theory of weak turbulence to internal waves of long wave length and found that GM spectrum maybe obtained theoretically.

首先，基于海洋實(shí)驗(yàn)數(shù)據(jù)分析了淺海內(nèi)波譜特性永久无毒在线观看你懂的，指出它與深海GM譜不同337啪啪肉体；接著，系統(tǒng)地總結(jié)了Zakharov等人發(fā)展的基于波-波相互作用的弱湍流理論能看的黄色网站福利，對(duì)文獻(xiàn)中沒有給出推導(dǎo)的一些關(guān)鍵性公式進(jìn)行了細(xì)致的推導(dǎo)欧美也操也射视频，并討論了Kolmogorov-Zakharov譜在海洋內(nèi)波研究方面可能的應(yīng)用；最后欧美体内she精高潮，總結(jié)了Lvov和Tabak對(duì)于深海GM譜的弱湍流理論解釋亚洲性交性爱网；介紹并細(xì)致推導(dǎo)了Madja、Mclaughlin和Tabak(1997)提出的一維MMT模型及其特性www.madouav。

A detailed investigation was conducted in this paper on the flow asymmetry and its influencing factors over an ogive slender body model, incorporated with surface pressure measurement, skin oil flow pattern visualization, hot wire dynamic signal acquasition and other relevant approaches, in a low turbulence wind tunnel.The obtained test results demonstrate good accordance with those published abroad in the behavior, tendency of the flow asymmetry and the effects due to Reynolds number, incoming turbulence and model geometry etc.

本文通過模型表面壓力分布測(cè)量久久精品视频官网、表面油流圖譜顯示和流場(chǎng)熱線信號(hào)采集分析等手段，在低湍流度風(fēng)洞中對(duì)細(xì)長(zhǎng)拱柱體模型的大攻角流動(dòng)非對(duì)稱性及其影響因素進(jìn)行了較為深入的研究劲爆欧美中文字幕精品视频，試驗(yàn)獲得的細(xì)長(zhǎng)體大攻角流動(dòng)非對(duì)稱性的特征国产免费吃奶摸下视频在线观看、趨勢(shì)以及Re數(shù)、湍流度和模型構(gòu)型等因素對(duì)大攻角流動(dòng)非對(duì)稱性的影響規(guī)律免费看黃色片，與國(guó)外資料上發(fā)表的結(jié)果是一致的欧洲一区视频在线观看。

In this study, four boundary layer flows with the same mean velocity profile (the exponent of power law is 0.30) but different turbulence intensities are first simulated, the turbulence intensities at the model height are 10%, 15%, 20% and 26% respectively.

在此基礎(chǔ)上，對(duì)不同截面不同高度的兩個(gè)建筑物間的相互干擾特性進(jìn)行了系統(tǒng)研究美女裸体污视频，主要針對(duì)建筑物間的靜力三级片手机在线视频、順風(fēng)向動(dòng)力、橫風(fēng)向動(dòng)力的干擾效應(yīng)進(jìn)行研究熟女一级毛片，然后對(duì)兩個(gè)建筑物間的干擾機(jī)理進(jìn)行了詳細(xì)分析男人操女人黄网站。

The results show tha,t at a subsonic speed, airplane turbulence increaseswith an increase in flying speed, and that a smaller airplane is affected more fiercely than a bigger one under the same air turbulence and weather condition.

研究表明，在亞音速下日韩中文字幕在线另类在线，飛機(jī)飛行速度增大美女不带套日出白浆免费视频，飛機(jī)顛簸增強(qiáng)；在同樣的氣象條件和大氣湍流強(qiáng)度下精品国语91，小型飛機(jī)的顛簸比大型機(jī)劇烈美国淫色网。

The results of the experiment confirm that the turbulence in the constant volume combustion bomb pulsates tempestuously and the main part of the energy of the turbulence in the experiment distribute in the field of the frequency lower than 200Hz.

實(shí)驗(yàn)結(jié)果表明定容燃燒彈內(nèi)的湍流是劇烈脈動(dòng)的高度非定常流動(dòng)男女日逼视频，其中包含的能量主要集中在200Hz以下的低頻區(qū)域，大尺度湍流在低頻區(qū)域的能量比小尺度湍流的能量大得多亚洲中文字幕一区二区在线观看，而且其能譜密度的峰值也大91超碰一区二区三区，對(duì)應(yīng)的頻率則稍高一些。