Explicit time marching methods for the time-dependent Euler computations
Journal of Computational Physics
Proceedings of the 27th annual conference on Computer graphics and interactive techniques
Numerical and Experimental Investigations on the Mach 2 Pseudo-Shock Wave in a Square Duct
Journal of Visualization
Numerical Flow Visualization of a Single Expansion Ramp Nozzle with Hypersonic External Flow
Journal of Visualization
Visualization of Blast Waves Created by Exploding Bridge Wires
Journal of Visualization
Visualization of Shock Waves around Hypersonic Spiked Blunt Cones Using Electric Discharge
Journal of Visualization
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In this study, the complex phenomena of propagation and interaction of the blast waves impacting on obstacles were visualized and investigated using a numerical method. Three different distances between an immovable wall and a bomb shelter with a square block inside were considered while a blast source is located in front of wall at the same distance from shelter. The transitional shock phenomena were simulated by means of a multi-block mesh system and a flux computational model. Spatial discretization was performed using the Roe's upwind schemes; time integration was achieved via the second-order explicit Hancock method. Proof of the numerical results indicated that those results were in close agreement with the experimental data obtained for the wedge flow. For the cases proved, the geometries of the reflected wave patterns followed by the incident blast waves crossing the immovable wall and impacting inside of bomb shelters were similar. However the height of wall has a dominating impact on the effect associated with different incident blast waves from the same blast source. Meanwhile, different reflected overpressure-time histories and streamlines were observed and analyzed for the results obtained.