Title
Visualization of shocks in granular media
Abstract
Granular flows exhibit interesting behavior as a result of complex interaction between the granular particles. This work visualizes the shock front resulting from granular flow over three cylindrical bodies having different cross-sectional shapes: circular, triangular and square, at three different flow velocities. The visualizations were done using the shadowgraph technique. The visualization data show well-defined shocks as well as some interesting instabilities in the granular media behind the shock fronts. The wave geometry resulted in estimation of the flow Mach number, the velocities of the granular particles and the speed of sound in the medium. The estimated flow Mach numbers were 6.9, 7.5 and 8.4. The estimation of the shock stand-off distance and radius of curvature of bow shock at the front stagnation point is also done for the cylindrical and square geometries. The oblique shock angle and the wake angle for the triangular model are also presented. Similarities of the wave features with continuum gas flows are discussed.
Year
DOI
Venue
2019
10.1007/s12650-019-00558-5
Journal of Visualization
Keywords
Field
DocType
Granular flow, Shadowgraph visualization, Shock stand-off distance, Speed of sound
Granular media,Visualization,Speed of sound,Classical mechanics,Physics
Journal
Volume
Issue
ISSN
22
4
1343-8875
Citations 
PageRank 
References 
0
0.34
0
Authors
3
Name
Order
Citations
PageRank
Priyankar Garai100.34
Shivam Verma200.34
Sanjay Kumar300.34