查询词典 turbulence

The meridionally accelerated axial-flow fans including meridian acceleration rotor, vaneless diffuser and volute was numerically simulated in the whole flow passage by Reynolds time-averaged N-S equations with tensor and k-ε turbulence model.

采用三维雷诺时均N-S方程和标准k-ε湍流模型，对包含叶轮、无叶扩压器与轴向蜗壳于一体的子午加速风机进行了整机全流道的数值模拟。

The magnitude of the turbulence then follows directly from the observed line with if the nebular gas temperature is known.

如果已知星云气体的温度，则湍流的大小可直接从观测的谱线宽度得出。

This paper gives the distribution of the Peynolds stresses, which shows that the flow near the wall at the exit is obviously nonisotropic and the maximal turbulence intensity is enough high to impact on the matching of the intake and the engine. The unsteady characteristics of the flow evince that the flow doesn't separate obviously.

出口截面上雷诺应力分布表明：该进气道出口流场主流方向的紊流强度较大，最大值已达8%以上，这给进／发匹配造成影响；正雷诺应力和剪切应力沿径向和周向的分布特点则说明进气道出口核心流区域流动基本是各向同性的，然而在近壁区却表现为明显的各向异性。

The method used here has accounted for the chordwise and spanwise noncompactness effects of the blade surface pressure,the blade-to-blade loading correlations, especially the nonisotropic and non homogeneous turbulence field due to distortion during the rotor in-flow process.

本文计算了一架模型直升机在＂准悬停＂状态下紊流场的畸变以及相应的干扰噪声谱，并对考虑畸变与非畸变、均匀畸变与非均匀畸变的结果作了比较。

AIRMETs cover moderate icing, moderate turbulence, sustained winds of 30knots or more at the surface, widespread areas of ceiling less than l,000 feet and/or visibility less than 3miles, and extensive mountain obscurement.

AIRMETs包括中度结冰、中度颠簸、30海里/时或以上持续的地面风，在大范围内云幕高低于1000英尺和/或能见度小于3英里，和大山被掩盖模糊不清。

Some students addicting to Internet cause that they desert their lesson and alienate other schoolmates. Especially, the varied harmful information in Internet produces the chaos such as Occidentalization in ideology, weakening national identity, turbulence in moral and value.

不少大学生因痴迷网络，不仅荒废了学业，与同学关系也日渐疏远，尤其是网上形形色色的不良信息更是造成了大学生意识形态的西化、民族认同感的弱化和道德价值取向的紊乱。

An ideal numerical experimental model of the general circulation of the atmosphere is constructed with simple considerations of the radiation, turbulence exchange and condensation heatings and orographic effect.

本文建立了一个理想的大气环流数值试验模式，其中简单地考虑了辐射、湍流、凝结加热及地形的动力作用。

Liquid propellant rocket engine ; Precombustion chamber ; Turbulence model ; Three dimensional flow ; Numerical simulation

液体推进剂火箭发动机；预燃室；湍流模型；三维流；数值仿真

In order to check the correctness and reliability of direct numerical simulation of the three-dimensional turbulence with the moderate or low flow Reynolds number, this paper adopts the pseudospectral method to direct numerically simulate the three-dimensional plane mixing layer.

为了验证直接数值模拟三维中低流动雷诺数湍流的正确性和可靠性，该文采用拟谱方法对三维平面混合层流场进行了直接数值模拟，并将数值模拟得到的结果与 Lasheras 等的平面混合层经典实验结果进行了对比。

Although spectral Doppler echocardiography holds a certain of value in flow quantitation for regurgitant and shunt diseases, the detection method is complicated and tedious sometimes, and its accuracy and wide application are usually affected by the turbulence and the multi-valve impairment.

虽然频谱多普勒对返流和分流性疾病的血流定量诊断具有一定价值，但有时检测比较繁琐，并且常常因湍流及联合瓣膜损害影响其准确性及广泛应用。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。