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The additional optical path difference of Michelson interferometer without compensator is analyzed, and the equation of interference pattern is deduced.

通过分析缺失补偿板的迈克尔逊干涉仪中的附加光程差,推出干涉条纹满足的方程式,并用计算机模拟了动镜移动过程中变化的干涉条纹,与实验结果相一致。

Based on this, a new WENO difference scheme which based on Dispersion-Relation-Preserving relation is developed, and representative test cases with this scheme for computational aeroacoustics problems has been implemented and compared in order to test capability of wave capturing; In addition, WENO schemes generally do not converge at high order in the presence of contact discontinuity of Euler equations, so a conservative front tracking technique coupling WENO schemes and Level Set method to simulate the translating density profile is presented here, and numerical simulation with this technique for representative test case has been implemented and results show the desired accuracy.

本文研究了高阶精度加权基本无振荡格式及其在双曲守恒律方程中的应用,在此基础上作了两个方面的工作:一是针对高频声波问题构造出一种基于保色散关系的WENO有限差分格式,并对计算气动声学问题的代表性算例进行了大量数值实验,比较了该格式捕捉波数的能力;另外,针对高阶WENO格式在处理Euler方程的接触间断时精度有所降低的问题,研究了利用界面追踪技术Level Set方法和高阶激波捕捉WENO格式相结合的一种守恒追踪方法,并且给出有代表性的密度滑移面问题的算例,得到一致高阶精度的数值模拟结果。

Combustion instability in liquid rocket engine is investigated with theoretical analyses, numerical simulations and experiments. Nonlinear science, such as Nonlinear Dynamics, Non- equilibrium Thermodynamics, and Wavelets, is introduced in the studies.Nonlinear oscillation equation of chamber pressure is established.

本文结合非平衡热力学、小波分析、非线性动力学等非线性学科,建立燃烧稳定性理论模型,发展两相喷雾燃烧非定常数值模拟程序,利用激光测粒系统,发动机高频热试系统等测试手段,重点围绕液体推进剂的化学动力学过程,对燃烧不稳定进行了较为系统的理论、仿真和实验研究。

In the PEMFC system, the oscillogram of the current is stable while the current is 1A; however, when the current is changed into 2.1A (subject to the power is 230W), the current output fluctuates and twists. After comparing the result generated from the simulation test of PSIM and experiment with the real data, this theory of the dissertation is proved to be workable.

本论文之研制之质子交换膜燃料电池电能转换系统,当电流为1A与1.9A时,电流波形图相当稳定,而当电流改变成2.1A时,此时功率约为230W,其输出电流波形及产生扭曲变形较不稳定,经由PSIM软体模拟与实验比较得出稳定燃料电池发电系统,并且与实际量测结果互相比较,以验证本文研究系统之可行性。

The simulated output characteristic curves with this model agree with experimental results.

基于新迁移率模型的模拟结果与实验吻合。

Integrating Navier-Stokes equations with overfall model, this dissertation firstly applied CFX5. 5 solver and full coupling arithmetic to simulate air flow in flow field plates, and evaluated water management of six kinds of flow channels, the results of simulation and analysis were verified by experiments.

本文首次结合Navier-Stokes方程与湍流模型,采用CFX5.5求解器及全隐式耦合算法对对流场板内的空气流动进行了数值模拟,对不同流场板进行了水管理评价,并得到了实验的证实。

Analysis whether this pressure sensors fluxsystem be applicable smaller then 1 cm, and whether the pipe geometricalappearance and flow status influence the flux detection system .and relate velocityof flow、compressive stress、pipe configuration、laminar flow and overfall、differenceof the pipe radius、and so on Use the related principle of the hydromechanics , deduce the method of presswith 2 points and 3 points to measure the flux detection, analyzed the possibility ofmake use of MEMS compressive stress transducer to survey flux detection.possibility and related influence factors from the theories.

对实现压差式测量中多点压力传感器设置间距提出了小于1cm的设想,并用有限元分析模型模拟分析了在压力传感器间距小于1cm条件下流量测量的性能,取得了有意义的实验数据,证明了实现这一设想的可行性。

Wave runup and overtopping over a seawall were reproduced by using the numerical wave tank and compared with the experimental data available.

在本文建立的数值波浪水槽内对规则波在海堤上爬高和越浪过程进行了数值模拟,并将计算结果与现有实验结果进行了比较。

The study results showed that the bioaccessibilities of p,p'-DDT, p,p'-DDD and p,p'-DDE in intestinal solution were higher than in stomach,and the bile and pancreatin had positive effects to them.

采用基于生理学的体外实验,通过模拟人体胃和小肠的环境,分析了胡萝卜中p,p'-DDT,p,p'-DDD和p,p'-DDE在人体胃肠系统的生物有效性。

The third chapter of the thesis discusses a novel paraboloidal lensed multimode fiber used in the fiber coupling of the high power single emitter broad area diode laser, and the results of the computer aided simulation of the coupling have been described too, the results verified the theory of paraboloidal lensed multimode fiber.

第三章详细讨论了利用抛物面型微透镜多模光纤与大功率宽发射域半导体激光器的耦合效率;利用计算机辅助模拟了耦合过程,并通过实验验证了耦合系统的可行性。

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推荐网络例句

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面,更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值,分为几个相等的区间作为横轴,并将各区间内所测定值依所出现的次数累积而成的面积,用柱子排起来的图形,也叫做柱状图。

You rap, you know we are not so good at rapping, huh?

你唱吧,你也知道我们并不那么擅长说唱,对吧?