Time-resolved quantitative visualization of complex flow field emanating from an open-ended shock tube by using wavefront measuring camera

TL;DR

This paper presents a high-resolution, time-resolved visualization method for complex shock-induced flow fields from a miniaturized shock tube using a novel wavefront measuring camera, enabling detailed analysis of shock wave dynamics.

Contribution

The study introduces a new wavefront measuring camera setup capable of quantitatively capturing the evolving flow field from a shock tube with high spatial and temporal resolution.

Findings

Successful visualization of shock wave evolution over 300 microseconds.

High-resolution data reveals detailed flow structures near the shock tube exit.

Method enables precise analysis of shock wave and flow interactions.

Abstract

Quantitative visualization of shock-induced complex flow field emanating from the open end of a miniaturized hand-driven shock tube (Reddy tube) is presented. During operation, the planar shock wave of Mach number Mi=1.3 is discharged through the low-pressure driven-section, kept open to ambient atmosphere. From the moment of shock discharge, its aftereffects of evolving flow field are recorded quantitatively for 300us near the exit of the tube by using our newly developed high resolution (16Mpixel) in-house developed wavefront measuring camera setup.