Quantitative Pressure Measurement of Shock Waves in Water Using a Schlieren-Based Visualization Technique
Quantitative Pressure Measurement of Shock Waves in Water Using a Schlieren-Based Visualization Technique
复制标题
使用基于纹影的可视化技术定量测量水中冲击波的压力
DOI：
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发表时间：
2013
期刊：
影响因子：
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通讯作者：
V. Eliasson
中科院分区：
文献类型：
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作者：
C. Wang;S. Qiu;V. Eliasson
许多流体流动应用，例如冲击波传播和射流，涉及热力学状态变量的变化，例如流体的压力或密度。为了充分了解流动的动态，在这些应用的实验测量过程中需要有关变量的定量信息。背景导向纹影（BOS）方法是一种相对较新的定量可视化方法，它使用数字图像相关算法和数值求解器。它已应用于测量气态流体的密度变化。本文的主要重点是将 BOS 应用到水中冲击动力学的研究中，并为这种方法提供了详细的协议。实验结果表明，该技术是探测冲击事件中水中压力变化的可靠且稳健的方法。
Many fluid flow applications, for example shock wave propagation and jet flows, involve variation of thermodynamic state variables such as pressure or density of the fluid. In order to fully understand the dynamics of the flow, quantitative information about the variables is desirable during experimental measurements of these applications. The background oriented schlieren (BOS) method is a relatively new quantitative visualization method that uses a digital image correlation algorithm and a numerical solver. It has been applied for measuring the density variation in gaseous fluids. In this paper, the main focus is to apply BOS to the study of shock dynamics in water and provide a detailed protocol for such a method. The experimental results indicate that this technique is a reliable and robust way of probing pressure variations in water for shock impact events.