A study on blast wave diffractions and the dynamics of associated vortices inside different grooves kept at various lateral distances from the shock tube

S Subramanian, M Thangadurai, K Kontis - European Journal of Mechanics …, 2024 - Elsevier
Diffraction is a fundamental phenomenon that occurs when blast or shock waves pass over
sudden discontinuous surfaces. It generates a complex flow field consisting of diffracted …

[HTML][HTML] Enhancing blast mitigation in tunnels with expansion chamber subjected to high explosives detonations for protecting underground facilities

J Shin, S Pang, W Kim - Tunnelling and Underground Space Technology, 2024 - Elsevier
This paper presents a numerical investigation into the effect of expansion chamber in
mitigating overpressures and impulses in protective tunnels subjected to detonation of high …

A simple, robust and efficient high-order accurate shock-capturing scheme for compressible flows: Towards minimalism

T Ohwada, Y Shibata, T Kato, T Nakamura - Journal of Computational …, 2018 - Elsevier
Developed is a high-order accurate shock-capturing scheme for the compressible
Euler/Navier–Stokes equations; the formal accuracy is 5th order in space and 4th order in …

Vortexlet formation in Schardin's problem

LN Kofoglu, GG Spinelli, B Celik - Physics of Fluids, 2022 - pubs.aip.org
The present study focuses on the shock diffraction problem over a triangle wedge for Mach
numbers of M= 1.3, 1.5, 1.7⁠, and 2.0 by using a two-dimensional, high-order, in-house …

[HTML][HTML] Experimental investigation on shock wave diffraction over sharp and curved splitters

F Gnani, KH Lo, H Zare-Behtash, K Kontis - Acta Astronautica, 2014 - Elsevier
Shock wave diffraction occurs when a normal travelling wave passes through a sudden area
expansion. Turbulent, compressible, and vortical are the characterising adjectives that …

Pulsed discharge-induced high-speed flow near a dielectric ledge

DI Tatarenkova, EY Koroteeva, TA Kuli-zade… - Experiments in …, 2021 - Springer
We report on the effect of nanosecond surface sliding discharge glow redistribution near a
dielectric ledge and high-speed post-discharge flow dynamics. The discharge energy …

Research on the influence of pits on the propagation law of explosion shock waves

S Fei, W Liangquan - Scientific Reports, 2024 - nature.com
To study the influence of pits on shock wave propagation and the propagation of shock
waves within pits, numerical simulations were used to calculate the distribution of …

On the double-sided shock diffractions in quiescent and supersonic crossflows

Y Qin, HX Huang, XB Tang, HJ Tan, FB Li - Physics of Fluids, 2024 - pubs.aip.org
Shock diffraction is a widespread phenomenon in aerospace applications, such as shock
tunnel nozzle and jet exciter exit, impacting their performance significantly. This paper …

A Study on the interaction of shock tube-generated blast waves with a circular object at different pressure ratios

A Kundu, M Thangadurai - European Journal of Mechanics-B/Fluids, 2025 - Elsevier
The interaction of high peak overpressure blast waves with a circular object placed at two
different axial locations from the shock tube exit is studied through numerical simulation …

[HTML][HTML] Numerical investigation of rarefied vortex loop formation due to shock wave diffraction with the use of rorticity

Z Cao, C White, K Kontis - Physics of Fluids, 2021 - pubs.aip.org
When compressed gas is ejected from a nozzle into a low-pressure environment, the shock
wave diffracts around the nozzle lip and a vortex loop will form. The phenomenon has been …