查询词典 unsteady

To apply it in nonstaggered grid system easily, an"adjusted"step is added. The computation results prove that the improved PISO algorithm is better than SIMPLE algorithm for unsteady flow simulation.

为了使其方便地应用于非交错网格的求解中，本文提出了在校正步之间添加中间调整步的方法，并与SIMPLE算法进行了比较。

Governing equations of nonprimatic channel unsteady flow are simplifiedly analyzed with the expressed form of channel parabolic cross section by variation of distance,and applied with dam sudden release problem in nonuniform wetted perimeter cross section on neglecting friction and slope effects.

利用明渠沿程抛物型断面的概化关系式，对棱柱体明渠非恒定流的控制方程进行简化分析，并应用于忽略底坡和摩阻影响的非单一湿周断面明渠瞬时全溃问题。

This method is also available for other problems of unsteady flow around complicated bluff bodies at medium or high Reynolds numbers and the results are used as reference for wake control The phenomena of the sinusoidally oscillating flow past a circular cylinder are also studied.

本文应用有限差分方法求解涡量-流函数形式的N-S方程，数值模拟了园柱瞬时起动后流动分离、旋涡生成、脱落以及随时间推进涡街产生和长期非定常演化过程，包括对称涡的生成，二次涡形成的α结构及卡门涡街等。

At last,according to the identification,with the oneˉdiˉ mensional unsteady methods, the internal ballistics performance of S RM with highˉoctane propellant during storage was researched, and compared the calculated date with the testing dat a, the result showed the model and methods were reaˉ sonable and effective.

基于参数辨识，采用一维非定常模型对高能固体推进剂贮存条件下发动机内弹道性能进行了预示，并与试验结果进行了比较分析，计算表明所建模型合理，方法有效。

The measurement of unsteady or tidally affected flow has been a problem faced by hydrologists for many years.

多年来，测量不稳定流和受潮汐影响的流量一直是水文工作者面临的难题。

The advent of the acoustic Doppler current profiler made possible the development of a discharge-measurement system capable of more accurately measuring unsteady or tidally affected flow.

随着ADCP(Acoustic Doppler Current Profilers)声学多普勒流速剖面仪的出现，使得更准确的测量不稳定流和受潮汐影响的流量测验系统成为可能。

With respect to the experimental research on the unsteady flow fields of oscillating cascades, a two-dimensional oscillating cascade test rig is constructed, in which the blades can vibrate torsionally around their midchord at frequencies up to 18Hz.

在振荡叶栅非定常流动的实验研究方面，本文建设了二维低速振荡叶栅实验台，叶片可绕弦中点作扭转振动，振动频率最高可达18Hz，采用压力传感器测量叶片表面的非定常压力。

Unsteady flow could increase transmural transport of drug and convective diffusion in tumor tissues as well.

毛细血管边值阶跃增压产生的不定常流动有助於药物从管壁渗出进入组织内部，也有助於其在组织内扩散。

Numerical simulation of the unsteady flow in a transonic turbine stage is still a hard work for CFD researcher.

涡轮级内的非定常流场数值模拟是现阶段计算流体力学研究的重要领域，也是研究的难点。

The present work is mainly focused on developing airfoils numerical simulation methods for steady and unsteady transonic flow.

本文主要发展了计算翼型跨音速定常及非定常粘性绕流的数值模拟方法。

Objective:To explore the feasibility of laparoscopy in diagnosing and treating of abdominal diseases.

目的：探讨腹腔镜用以诊断腹部外科疾病及选择治疗方案的可行性。

The lifetime of nylon 1010 and nylon 1010/POSS composites decreased with increasing temperature.

热重-红外联用分析表明尼龙1010在氮气气氛下的降解产物主要为小分子的低聚物，POSS并不改变尼龙1010降解产物的组成。