Abstract We studied the problem of converging cylindrical and spherical strong shock waves collapsing at the axis/center of symmetry for a non-ideal gas with constant density. We have applied the perturbation series technique which provides us a global solution to the implosion shock wave problem yielding the results of Guderley's local self-similar solution, which is valid only in the vicinity of the axis/center of implosion. We analyzed the flow parameters by expanding the solution in powers of time and found the similarity exponents as well as the corresponding amplitudes in the vicinity of the shock-collapse. The flow parameters and the shock trajectory have been drawn in the region extending from the piston to the center of collapse for different values of adiabatic coefficient and the non-ideal parameter.
Highlights •Global solution to the imploding shock problem in a non-ideal gas using perturbation series technique. •The similarity exponents are obtained along with the corresponding amplitudes in the vicinity of the shock collapse. •Guderley's local solution provides only the first dominant similarity exponent. •The existence of shock and its location is examined. •Effect of the non-ideal parameter on the flow variables is discussed.
Propagation of strong shock waves in a non-ideal gas
Acta Astronautica ; 159 ; 96-104
2019-03-12
9 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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