TY - GEN

T1 - Numerical simulation of blast wave propagation in vicinity of standalone prism on flat plate

AU - Valger, Svetlana

AU - Fedorova, Natalya

AU - Fedorov, Alexander

PY - 2018/3/28

Y1 - 2018/3/28

N2 - In the paper, numerical simulation of shock wave propagation in the vicinity of a standalone prism and a prism with a cavity in front of it was carried out. The modeling was based on the solution of 3D Euler equations and Fluent software was used as a main computational tool. The algorithm for local dynamic mesh adaptation to high gradients of pressure was applied. The initial stage of the explosion of condensed explosive was described with the help of "Compressed balloon method". The research allowed describing the characteristic stages of the blast in a semi-closed space, the structure of secondary shock waves and their interaction with obstacles. The numerical approach in Fluent based on combining inviscid gas dynamics methods and "Compressed balloon method" was compared with the method which had been used by the authors earlier with the help of AUTODYN and which is based on the use of the hydrodynamic model of a material to describe state of detonation products. For the problem of shock wave propagation in the vicinity of standalone prism the comparison of the simulation results obtained using both the methods with the experimental data was performed on the dependence of static pressure and effective momentum on time for the characteristic points located on prism walls.

AB - In the paper, numerical simulation of shock wave propagation in the vicinity of a standalone prism and a prism with a cavity in front of it was carried out. The modeling was based on the solution of 3D Euler equations and Fluent software was used as a main computational tool. The algorithm for local dynamic mesh adaptation to high gradients of pressure was applied. The initial stage of the explosion of condensed explosive was described with the help of "Compressed balloon method". The research allowed describing the characteristic stages of the blast in a semi-closed space, the structure of secondary shock waves and their interaction with obstacles. The numerical approach in Fluent based on combining inviscid gas dynamics methods and "Compressed balloon method" was compared with the method which had been used by the authors earlier with the help of AUTODYN and which is based on the use of the hydrodynamic model of a material to describe state of detonation products. For the problem of shock wave propagation in the vicinity of standalone prism the comparison of the simulation results obtained using both the methods with the experimental data was performed on the dependence of static pressure and effective momentum on time for the characteristic points located on prism walls.

UR - http://www.scopus.com/inward/record.url?scp=85045155179&partnerID=8YFLogxK

UR - https://www.mendeley.com/catalogue/a3e6d9c8-f35d-34e2-8bec-e5ec7316f5bd/

U2 - 10.1063/1.5027339

DO - 10.1063/1.5027339

M3 - Conference contribution

AN - SCOPUS:85045155179

SN - 9780735416246

VL - 1939

T3 - AIP Conference Proceedings

BT - XV All-Russian Seminar "Dynamics of Multiphase Media", DMM 2017

A2 - Fomin, null

PB - American Institute of Physics Inc.

T2 - 15th All-Russian Seminar on Dynamics of Multiphase Media, DMM 2017

Y2 - 3 October 2017 through 5 October 2017

ER -