激波

For instance, the perturbation may transform a strong detonation into a weak deflagration followed by a shock wave. This interesting phenomenon also appears in the numerical solutions in [58]. Our results give a reasonable explanation to this phenomenon.

例如，扰动会将一个强爆轰波变为一个波后为激波的弱爆燃波，这种现象亦出现在数值解[58]中，我们的结果为这种现象提供了一个理论的解释。

The conclusion results are positive. The shock wave with viscosity and heat conduction is validated a hyperbolic tangent type of soliton wave.

证实了有粘性和导热的激波是一类满足Sine-Gordon方程的双曲正切型孤立波。

Detonation wave ; incombustible abrupt expansion pipe ; numerical simulation ; shock reflection

爆轰波；不可燃突扩管道；有限体积法；激波反射

The result shows that the oblique shock angle before the detonation initiation and the detached detonation angle are consistent with theoretical analysis.

研究表明，实验得到的起爆前斜激波和起爆后脱体爆轰波的角度与理论分析结果非常一致。

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。

Results show good agreement between numerical and shock polar theory in the regular reflection zone.

在正规反射区，计算结果与激波极线理论基本一致；应用燃烧模型，分别计算了Fe球壳装药JB90 0 3及JB90 14散心爆轰波的绕射传播，计算结果与实验很好地符合。

This approach has the advantage that the contact discontinuity in each local wave pattern is always fixed with speed zero and the rarefaction waves and shock waves are located on either side.

这种方法的优点是每个局部波形中的接触间断速度都为零，并且疏散波和激波分别位于时间轴的两侧。

The classical elementary waves in Riemann solutions include rarefaction wave, shock wave and contact discontinuity.

黎曼解涉及的经典基本波包括疏散波、激波和接触间断。

In the case of irregular reflection,numerical solution can get reflectedwaves of shock type and determine the triple point with certain accuracy.

在非正规反射的情形，数值解都能得到激波类型的反射波，并以一定的精度确定三波点。

It presents many kinds of shock wave mechanisms and oscillating-tooth structures which may be selected in design. It also provides the theoretic basis for improving the performance of the oscillating-tooth machiner...

首次提出了可供设计选择的各种激波机构和活齿结构，为改善活齿波导传动的性能，研制新型的活齿波导传动提供了理论根据。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。