ИСТИНА

Interplay of strong shock waves after supernova explosion with giant molecular clouds and cloud-cloud collisions are proposed as the key mechanisms for triggering stars in the interstellar medium. We performed calculations in similar situations to study consequences of turbulization and instabilities influence onto emergent dense clumps and filament structures. The simulation was performed accordingly to different scenario of impact between two clouds, system of clouds and coming or originated shock waves. In numerical experiments non-identical oppositely directed clouds (of different mass, size and density distribution) collide with oncoming velocities in the range of 0.5 to 5 km s-1. Euler’s code with parallelization using high resolution calculation grids (more billion nodes) was used to perform numerical experiment on high-performance computers. Analysis of consequence of cloud-cloud collisions simulated shows a spatial intermittency of clouds layers and in core compressed as lens-like clump, accompanied amplified Kelvin-Helmholtz instability and disturbance of gas at outer boundaries. Formation of clump and filaments, and destruction of them in evolution are in a good accordance with modelling data of recent study, many of them were initiated work of Habe and Ohta. One of the observed effects was appearance of acoustic wave perturbations in outer cloud medium. Possibly this process is generated via energy pumping through high-gradient outer gas layers and clumpy formation interconnection.