Numerical Simulation of Inviscid Transient Flows in Shock Tube and its Validations
Numerical Simulation of Inviscid Transient Flows in Shock Tube and its Validations
复制标题
激波管内无粘性瞬态流数值模拟及其验证
DOI：
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发表时间：
2008
期刊：
影响因子：
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通讯作者：
T. Yusaf
中科院分区：
文献类型：
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作者：
A. Al;M. Yusoff;T. Yusaf
本文的目的是开发一种新的二维时间精确欧拉解激波管的应用。该求解器是为研究马来西亚国立大学“UNITEN”新建的短持续时间高超音速试验设施的性能而开发的。该装置是针对不同的膜片压比值设计、建造和调试的，以获得宽范围的马赫数。所开发的求解器使用二阶精确的单元顶点有限体积空间离散化和四阶精确的龙格库塔时间积分，并且它被设计用于模拟类似驱动器/驱动气体（例如，空气-空气作为工作流体）的流动过程。求解器的验证对解析解和实验测量在高速流动测试设备。利用该求解器对激波管内的流动过程进行了进一步的研究。研究了激波的运动、反射和相互作用对激波管性能的影响。结果提供了很好的估计，冲击速度和冲击压力后，隔膜破裂。详细信息
在整个设施的气体动力学过程是可用的。所达成的协议是合理的。
The aim of this paper is to develop a new two dimensional time accurate Euler solver for shock tube applications. The solver was developed to study the performance of a newly built short-duration hypersonic test facility at Universiti Tenaga Nasional 'UNITEN' in Malaysia. The facility has been designed, built, and commissioned for different values of diaphragm pressure ratios in order to get wide range of Mach number. The developed solver uses second order accurate cell-vertex finite volume spatial discretization and forth order accurate Runge-Kutta temporal integration and it is designed to simulate the flow process for similar driver/driven gases (e.g. air-air as working fluids). The solver is validated against analytical solution and experimental measurements in the high speed flow test facility. Further investigations were made on the flow process inside the shock tube by using the solver. The shock wave motion, reflection and interaction were investigated and their influence on the performance of the shock tube was determined. The results provide very good estimates for both shock speed and shock pressure obtained after diaphragm rupture. Also detailed information
on the gas dynamic processes over the full length of the facility is available. The agreements obtained have been reasonable.