查询词典 turbulent flow

The results show that, when the computational error and its accumulation are eliminated effectively, the laminar flow in OFR with perfect-symmetric boundaries behaves in a pattern of central symmetry and circumferential uniformity while the turbulent flow field presents a centrally symmetric and circumferentially non-uniform structure with 8 transverse vortices arrayed circumferentially in a way of central symmetry, similar to Taylor vortices in Couette flow.

模拟结果表明在有效消除计算随机误差以及误差积累的情况下，几何边界理想对称OFR内的三维层流流场呈现出良好的中心对称性和周向均匀性，而湍流流场中心对称的同时呈现出周向非均匀结构－在圆周上生成8个中心对称排列的横向漩涡，其形态与Couette流中的泰勒涡类似。

The simulation results show that the rod baffles placed vertically and horizontally in the unit duct continuously shear and comminute the streamlines of the flow when the fluid crosses over the rod-baffles, change the fluid flow directions, and result in the disruption of the continuity and stability of the fluid. The disturbing flow can promote the fluid turbulent intensity and effectively enhance the heat transfer.

结果表明，纵横交错布置的折流杆在单元流道中不断分割和剪切流道内流体，其扰流作用促进了流体湍流，减薄了液体边界层，减小了对流换热热阻，因而有效地提高了流体的对流换热强度。

The medium is water and the inner flow field of vortex pump is rotating flow with constant angular velocity, three dimensional, and incompressible turbulent flow.

数值模拟计算选取工作介质为清水，并认为是牛顿流体且局部各向同性；认为旋流泵的内部流场是以定常角速度绕固定轴的旋转流场，属于复杂的三维不可压湍流流动。

Based on application of 3D body-fitted numerical grid with a curvilinear coordinates system and the theories about turbulent flow and the laminar flow, the new techniques that the independent variables were expressed by co-variable velocities were applied to solve the problems about flow around a high-speed car body for the first time.

采用当今数值新技术，较为全面和深入地研究了高速汽车车身绕流问题。本文依据k-ε双方程湍流模型和附面层理论，采用先进的曲线坐标系下的贴体与边界正交数值网格技术，首次把以协变速度分量作为独立变量的数值技术运用于汽车车身绕流问题的求解。

The interior flow of pump is the quite complicated turbulent flow. It is affected not only by the circumrotation and the surface curvature of impeller, but also by the sandy materials, even has the backflow and disengaged flow. They are one of the rather complicated numerical calculations in the fluid engineering field.

离心泵的内部流动是很复杂的湍流流动，同时由于受旋转、叶片表面曲率和泥沙颗粒的影响，还拌有脱流、回流等流动现象，是流体工程中较难的试验研究和数值计算问题之一。

Based on the basic theroy of fluid dynamics, this paper establishes a model of flow mechanics for turbulent flow, then uses this model to carry on a numerical simulation study on the conventional auger drill stabilizer annular flow field.

基于流体力学基本理论，本文建立了一套钻柱稳定器湍流模式力学模型，并采用该模型，对气体钻井常规螺旋钻柱稳定器环空流场进行了数值模拟研究。

In order to study the cavitation flow in a centrifugal pump, numerical simulation of steady cavitating turbulent flow in a specific speed 95 centrifugal pump was carried out by using a full cavitation model and a mixing two-phase flow model.

为了研究离心泵内的空化流动，将完整空化模型和混合流体两相流模型相结合，对比转速为95的离心泵叶轮在设计工况下的空化流动进行数值模拟。

Numerical simulation of the steady cavitating turbulent flow in the whole flow passage of a Kaplan turbine has been carried out by using a full cavitation model and a mixture two-phase flow model.

采用一种完整空化模型和一种混合流体两相流模型，对轴流式水轮机全流道内的定常空化湍流流动进行了数值模拟。

Three dimension and turbulent are common characteristic of fluid flow problem in nature and added free surface for the best familiar fluid-water, such as flood discharge flow around frusta of brake in waterpower project, flow around hull in ship engineering, and so on, all have the three characteristics which are the very important study content and aspects in CFD.

摘要自然界中的流体流动问题一般都具有三维性和湍动性，对于最常见的流体—水则同时还拥有自由表面，水利工程中绕闸墩的泄洪水流、船舶工程中的船体绕流等均具有上述流动的三种特性，这三种特性是计算流体力学领域非常重要的研究内容和方向。

Three dimension and turbulent are common characteristic of fluid flow problem in nature and added free surface for the best familiar fluid-water, such as flood discharge flow around frusta of brake in waterpower project, flow around hull in ship engineering, and so on, all have the three characteristics which are the very important study content and aspects in CFD.

三维自由面湍流场数值模拟及其在水利工程中的应用-数值模拟

Company's existing staff of 180 people, the management staff of 15 people.

公司现有员工180人，管理人员15人。

In catering a function, the majority of expense is incurred on your behalf prior to the actual event date.

大部份的支出费用又宴会结束的时候支付。