CHOOSING AN ADEQUATE MATHEMATICAL-MODEL IN PROBLEMS WITH HIGH PULSED ENERGY DEPOSITION

The problems of choosing the optimal mathematical model for a prescrib ed range of parameters of a pulsed action are discussed. A preliminary analysis performed by similarity and dimensional-analysis methods usi ng interpolation equations of state of the matter shows that the compl ete system of equations of gasdynamics can be simplified by dropping i ndividual terms which are not important in a given parameter range. Th e results of an analysis are presented in the form of nomograms, which also make it possible to identify the class of fast and energy-intens ive gasdynamic processes more accurately than at an intuitive level. ( C) 1998 American Institute of Physics. [S1063-7842(98)00805-8].