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定常平面流动
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  相似匹配句对
     THE FITTING OF SHOCKS IN STEADY PLANE POTENTIAL FLOWS
     平面定常位势流动中激波位置的确定
短句来源
     Experimental Procedure Study on Unsteady Flow in Plane Cascade
     平面叶栅非定常流动试验方法研究
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     Mathematical modelling of two-dimensional flow in alluvial rivers
     冲积平原河流平面流动的数值模拟
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     The Full Criterion for the Separation of the Incompressive Planar Flow
     不可压缩流体平面流动分离的充分判据
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     Reseaches on Steady Flow of Viscous Fluid by Preconditioned Method
     预处理方法研究粘性流体定常流动
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The long-duration blast wave action using a plane charge is an effective testmethod to study the propagation of plane waves in soil and the mutual action of soil medium onstructure. In this paper,the process of blast wave action using a plane charge is investigated bynumerical calculation and large scale outdoor tests. For the numerical calculation, a two-phasephysical model of TNT charge and real air is established.Using the Lagrangian partial differentialequations of one dimensional unsteady plane flow,the...

The long-duration blast wave action using a plane charge is an effective testmethod to study the propagation of plane waves in soil and the mutual action of soil medium onstructure. In this paper,the process of blast wave action using a plane charge is investigated bynumerical calculation and large scale outdoor tests. For the numerical calculation, a two-phasephysical model of TNT charge and real air is established.Using the Lagrangian partial differentialequations of one dimensional unsteady plane flow,the spatial distribution of the pressure on theshot cavity and the change of the pressure on the ground surface with time are given. After solving many technical difficulties on the simulation of high-overpressure by a plane charge in theoutdoor tests,the pressure loading of 45Mpa is obtained. By comparing the results of numericalcalculation with the measured values of the tests,the conclusion indicates that the oscillatingcharacteristics of the waveform and attenuation profile of the pressure versus time is in good accord with the test results. So,it shows that using a plane charge to simulate the high-Overpressureand long-duration blast wave action is a practical,effective and reliable method in engineeringapplication.

平面装药长持续时间爆炸作用是一种有效的试验手段,对土中平面波传播和土介质与结构相互作用的研究具有十分重要的意义。从理论计算和大型野外试验两个方面对平面装药爆炸作用过程进行了深入研究。在理论计算上,建立了TNT装药和真实空气双介质物理模型,利用一维不定常平面流动拉格朗日型偏微分方程组求解,给出了爆腔压力空间分布和地面压力随时间的变化结果。在野外试验中,克服了平面装药模拟高超压作用的许多技术困难,实现了高达45MPa的压力加载。文中将理论计算和野外试验结果进行了综合比较,结果表明压力波形的振荡衰减特征完全一致,从而证明了平面装药模拟高超压长持续时间爆炸作用是完全可以实现的有效而可靠的手段。

 
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