模拟试验

To verify the accuracy of CFD simulations, experiments were carried out. The results of simulations with user defined function of the effects of impeller type and stirring rate on the velocity field were in good agreement with the output of particle image velocity. The oxygen mass transfer model can be used to predict the process of oxygen mass transfer in a vessel, and the logarithmical expression can successfully describe the relation between the oxygen concentration and the dissolution time.

结果表明，(1)采用Fluent软件并结合用户自定义方程(user defined function， UDF)能够很好地模拟出实际搅拌器内流场分布，模拟结果与采用粒子成像技术(particle image velocity， PIV)的实验测量结果相符；(2)采用氧气传质模型能预测氧气在搅拌器内的动态传质过程，同时氧气浓度与溶解时间的对数关系式能较好描述试验搅拌器内氧气动态传质过程；(3)在相同搅拌速度下，圆盘涡轮式搅拌器产生的湍流动能分布范围要大于桨式搅拌器产生的湍流动能，而且湍流动能分布更均匀，湍流强度更大。

A set of device for simulating naphthenic acid corrosion under high temperature and high flow rate was designed and set up based on the latest research progresses.

基于最新研究进展，设计并建立了一套模拟高温、高流速状态的环烷酸腐蚀模拟装置，可实现原油在450 ℃下以100 m/s的流速冲刷样品的试验条件。

VOF method was used to track the shape and location of free face, and PISO method was used to couple the velocity field and pressure field.

为了验证数值模拟的准确性，对二维、三维数值模拟结果与试验结果及理论分析结果进行了比较。

A Corner-tangential-boiler of 410t/h in Guohua Beijing thermal powerplant was studied in the thesis. Firstly, optimizing operation was carried on boiler for de-NOx emission; secondly, numerical simulation was made by Fluent software, the calculation results were consistent with experiments. The retrofit scheme of reburn was put out which ascended the upper primary wind.

本论文以国华北京热电分公司410t／h四角切圆燃煤锅炉为研究对象，首先进行了锅炉低NOx优化运行的试验研究；并通过Fluent数值模拟对其进行了深入的研究，计算结果与实际情况吻合较好，同时提出将上一次风上移作为再燃的改造方案，并对改造后的情况进行模拟预测，得到改造后工况运行优于现行工况。

The calculated results based on the pressure-dependent spall porosities given by Tonk et al and Cochran et al are consistent but different from the calculated results based on Thomason's stress-dependent spall porosity.

Cochran等给出的依赖于压力的层裂空隙度方程所作的一维层裂试验数值模拟结果基本一致，而与基于P.F。 Thomason给出的依赖于应力的层裂空隙度方程所作的相应数值模拟结果有明显差异。

By briefly summarizing the development and application of unsubmerged abrasive waterjet as well as the theory of artificial submerged condition, a new tentative approach to apply AWJ into underwater environment was proposed because of its great potential advantages.

本文简要回顾了非淹没磨料射流技术与人工淹没环境条件理论的发展与应用，认为将磨料射流引入水下加工领域是一种新的尝试，通过介绍国内外的一些相关研究，充分显示了淹没磨料射流的潜在优势，在此基础上，提出一套淹没磨料射流的模拟装置，实现了在实验室进行模拟大水深环境的淹没磨料射流性能试验。

The abraded surface is remembered by dissecting,which provides a new way of treating with aside ridge and the calculation of abrasive rate.

将模拟结果与碳钢系列材料的试验结果以及其他研究者的模拟结果进行了比较，验证了模型的有效性。

Breaking occurred in shell bottom in FE simulation of one step hot drawing forming cambered shell,which has been proved in test of forming.

采用有限元模拟曲面壳体一次热拉深成形，壳体底部出现断裂，成形试验也与模拟结果一致。

Visible corona tests of several busbars of different diameter were carried out in Beijing, Xining and Lhasa where with different altitude respectively, and charge simulation method was employed to calculate the distribution of electrical fields in the vicinity of busbar surface, and then the calculated electric field values and the criteria from gas discharge theory were utilized in evaluating the onset voltage of negative coronas on busbar.

首先在北京、西宁和拉萨3地进行了多种直径模拟管母线的可见电晕对比试验，然后利用模拟电荷法对不同直径管母线表面电场分布进行仿真计算，并结合气体放电理论得到管母线负极性电晕的起晕电压。

Static leaching tests were performed with the simulated high level waste glass P19-5 at different temperatures in deionized water.

用静态浸出试验研究了模拟高放玻璃固化体P19-5在不同温度下的浸出行为，选用Ce作为Pu的模拟元素。

For a big chunk of credit-card losses; the number of filings (and thus charge-off rates) would be rising again, whether

年美国个人破产法的一个改动使得破产登记急速下降，而后引起了信用卡大规模的亏损。

Eph. 4:23 And that you be renewed in the spirit of your mind

弗四23 而在你们心思的灵里得以更新