1) Bluff body
阻流体
2) drag-reducing fluid
减阻流体
1.
Heating transfer enhancement to surfactant drag-reducing fluid with mesh-screen in the duct;
添加网格对增强表面活性剂减阻流体传热性能的试验研究
2.
The results indicate that the heat transfer reduction rate of the CTAC drag-reducing fluid increases with Reynolds number when Reynolds number is below the critical value and decreases rapidly when Reynolds number exceeds the critical value,the trends of heat transfer .
对不同工况下不同浓度和配比的CTAC减阻流体在二维流道中的减阻性能和传热性能进行了试验测试。
3.
The effect of concentration,mixture ratio,Reynolds number and heat flux of CTAC surfactant drag-reducing fluid has been investigated in a two-dimensional channel by using pressure difference transducer and temperature measuring system.
针对在水中添加表面活性剂可以出现阻力系数减少而同时传热性能发生变化的现象,采用测压差装置和热电偶测温系统分别对二维流道内不同的减阻流体的减阻性能、传热性能进行了试验,研究了浓度、配比、雷诺数和热流密度对减阻流体传热与阻力系数之比值的影响。
3) drag-reducing flow
减阻流体
1.
The turbulence characteristics of a surfactant solution in changing from drag-reducing flow to turbulent flow inside two-dimensional smooth channel and in changing from mesh plug were investigated through phase Doppler anemometry (PDA) and particle image velocimetry(PIV) system.
应用相位多普勒测速仪(PDA)和粒子图像测速仪(P IV)对添加筛网后的十六烷基三甲基氯化铵(CTAC)减阻流体湍流流场进行试验研究,得到了减阻流体的速度脉动分布以及在筛网后不同位置的减阻流体湍流速度分布和平均速度分布。
2.
The turbulence characteristics of a surfactant solution in changing from drag-reducing flow to turbulent flow inside two-dimension smooth channel and in changing from mesh plug were investigated through PIV (Particle Image Velocimetry) system in this study.
应用粒子图象测速仪对添加筛网后的CTAC(CetyltrimethylAmmoniumChloride)减阻流体湍流流场进行试验研究,得到了在筛网后不同位置的减阻流体湍流速度分布和平均速度分布。
4) drag reducing fluid
减阻流体
1.
Drag reducing performances of Cetyltrimethyl Ammonium Chloride (CTAC) drag reducing fluid in two-dimensional channel under different experimental situations were measured.
通过对不同工况下氯化十六烷基三甲基季铵盐(CTAC)减阻流体在二维流道中减阻性能的测定,分析了温度、质量分数、配比变化对流体减阻性能的影响。
2.
With an experiment, tests performance of cetyltrimethyl ammonium chloride drag reducing fluid in water system.
结合实验对CTAC减阻流体在流道中的减阻性能作了测试 ,分析了温度、浓度、配比变化对流体减阻性能的影响 ;应用激光相位多普勒测速仪测量了流体的速度场。
3.
An experimental study was conducted of the turbulent flow field of a CTAC drag reducing fluid in a two dimensional flow channel with the use of PIV (particle image velocimetry) and PDA (Phase Doppler Anemometry).
本文应用PIV(ParticleImageVelocimetry)和PDA(PhaseDopplerAnemometry)在二维流道内对CTAC(CetyltrimethylAmmoniumChloride)减阻流体湍流流场进行试验研究,得到减阻流体湍流速度分布。
5) Obstructing blood flow
阻流
6) spoiler
阻流板
1.
Flow field analysis on subsea pipe span with spoiler;
带阻流板海底管道管跨绕流流场分析
2.
Dealing with the problem of vortex induced vibration (VIV) of submarine pipe span with spoiler and focusing on the asymmetry of its lift coefficient, two new concepts are proposed: lift coefficient amplitude and lift coefficient additional value according to the special structure of spoiler.
然而对于带阻流板的管跨结构,由于其结构的特殊性,导致流场在绕流过程中产生的升力系数具有明显的非对称性。
3.
That is, A finlike spoiler is installed on the upside of pipeline, when the pipeline route is perpendicular to sea water flow, the current will erode soil beneath the pipeline and form trench to certain depth; consequently the pipeline is buried at the depth of 1～1.
在管道的上方安装类似鱼“鳍”的阻流板,当海底管道的路由垂直于海水的流动方向时,利用水流的作用在管道的底部冲刷出一定深度的管沟,从而将管道埋在1～1。
参考词条
补充资料：HeⅡ的二流体模型（two-fluidmodelofHeⅡ）
HeⅡ的二流体模型（two-fluidmodelofHeⅡ）
在低于λ点相变温度Tλ附近，毛细管中测出液HeⅡ的黏性系数η比正常的HeⅠ液体的要小1011倍，但在旋转圆柱容器中测出的η值比正常HeⅠ的相关不大，这个矛盾由Tisza于1938年提出二流体模型和1941年朗道独立地从量子流体力学给出了更完善的二流体模型予以解释，并解释了其他实验现象。这个模型认为HeⅡ液体由密度为ρs，而流速vs是无旋的`(\nabla\timesbb{v}_s=0)`、黏性系数ηs=0，且是零熵的超流部分(s)，和具有正常液体性质的正常部分(n)这两个部分组成，而液体HeⅡ的总密度ρ=ρs ρn，ρs和ρn随温度T的变化如下：
实际上，正常和超流部分同是4He原子组成，正常流体用热激发产生的声子或旋子这两种准粒子来描绘（参见“朗道超流的唯象理论”），在0＜T＜Tλ间是正常和超流这两种不同性质液化按不同比例的混合液体，两者之间没有摩擦。超流液体不需要压力差照常可在通道中流动。二流体模型解释了热机械效应等，还预言了在HeⅡ液体中存在第二声波，即熵波或称热波，并为实验所证实。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。