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首页> 外文会议>International Conference on Nuclear Engineering >TIME-DEPENDENT SOLUTION OF UNSTEADY FLUID FLOW EQUATIONS FOR HIGH SPEED OSCILLATING COMPRESSIBLE FLOWS AND BLAST WAVE PROPAGATIONS
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TIME-DEPENDENT SOLUTION OF UNSTEADY FLUID FLOW EQUATIONS FOR HIGH SPEED OSCILLATING COMPRESSIBLE FLOWS AND BLAST WAVE PROPAGATIONS

机译：用于高速振荡的压缩流量和爆发波传播的不稳定流体流动方程的时间依赖性解

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摘要

A solution ot the highly complex unsteady high speed oscillating compressible flow field inside a cylindrical tube has been obtained numerically, assuming one dimensional, viscous, and heat conducting flow, by solving the appropriate fluid dynamic and energy equations. The tube is approximated by a right circular cylinder closed at one end with a piston oscillating at very high resonant frequency at the other end. An iterative implicit finite difference scheme is employed to obtain the solution. The scheme permits arbitrary boundary conditions at the piston and the end wall and allows assumptions for transport properties. The solution would also be valid for tapered tubes if the variations in the cross-sectional area are small. In successfully predicting the time dependent results, an innovative simple but stable solution of unsteady fluid dynamic and energy equations is provided here for wide ranging research, design, development, analysis, and industrial applications in solving a variety of complex fluid flow heat transfer problems. The method is directly applicable to pulsed or pulsating flow and wave motion thermal energy transport, fluid-structure interaction heat transfer enhancement, and fluidic pyrotechnic initiation devices. It can further be easily extended to cover muzzle blasts and nuclear explosion blast wave propagations in one dimensional and/or radial spherical coordinates with or without including energy generation / addition tenns.
机译：通过求解适当的流体动力学和能量方程，在数值上以数字方式获得圆柱形管内的高度复杂的不稳定高速振荡可压缩流场。管通过在一端封闭的右圆筒近似，在另一端以非常高的谐振频率振荡活塞。采用迭代隐含的有限差分方案来获得溶液。该方案允许活塞和端壁的任意边界条件，并允许运输性能的假设。如果横截面积的变化很小，则该溶液也适用于锥形管。在成功预测时间依赖性结果中，这里提供了一种创新的简单但稳定的不稳定流体动态和能量方程解决方案，用于求解各种复杂的流体流动传热问题的广泛测距研究，设计，开发，分析和工业应用。该方法可直接适用于脉冲或脉动流动和波动热能传输，流体结构相互作用传热增强和流体烟火启动装置。它可以进一步延伸以覆盖枪口爆破和核爆炸鼓在一维和/或径向球形坐标中，或者没有能量产生/加成Tenns。

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