We performed a numerical investigation of the process of transition of a spherical leading front into a plane one in a cylindrical channel. The processes of the collision of reflected shock waves, formation of a nonstationary grating-like structure of flow, and of the overtaking interaction of shock waves are investigated. We found that in the presence of hot gas layers on the walls of the channel a plane head front is not formed.
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- r,z :
radial and axial coordinates
- t :
- p :
- T :
- u,v :
radial and axial velocity components
- a :
distance between the planes
- b :
half-distance between the planes
- d :
channel diameter (in experimental data)
- R 0 :
inital radius of the shock wave front
- p *(r, z),u *(r, z),v *(r, z),T *(r, z):
distributions of pressure, radial, and axial velocity, and temperature at the initial time moment
- L :
length of the zone of formation of a plane front
- T 1,T 2 :
temperature of gas in the lower and upper thermal layers
- h 1,h 2 :
thicknesses of the lower and upper thermal layers
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Andrushchenko, V.A., Meshcheryakov, M.V. Calculation of the process of blast wave diffraction in a cylindrical channel. J Eng Phys Thermophys 68, 476–480 (1995). https://doi.org/10.1007/BF00858662
- Statistical Physic
- Shock Wave
- Numerical Investigation
- Blast Wave
- Wave Diffraction