Simulation of evolution of supernova remnants in multiphase interstellar medium

The results of ID-simulations of evolution of supernova remnants are presented. In order to correctly treat with exchange processes we use realistic models with explicit separation on intercloud medium and clouds of HI with different volume factors. In such approach the remnant expand slowly then in models with homogenous interstellar medium with deceleration parameter Vt/R = 1/5 independently from value of clods volume factor.