G.A.Atanov, O.A.Rusanova, A.N.Semko Calculation of unsteady fluid flows with cavitation |
Applied hydromechanics, Vol. 6 (78) ¹ 4, (2004) |
| In the paper, problems of the liquid pulse and wave movements calculation accompanying the unsteady cavitation are discussed. Some models of the cavitation based on representations about a continuous medium are considered. Two models that are based on a constancy of i) pressure and ii) the sound speed in the cavitation zone are analyzed in details. A new numerical scheme that is free from the listed lacks is offered. It is based on introduction of an artificial viscosity in the movement equations of an ideal compressed liquid. The results of calculations for different cavitation models are compared with analytical solutions. The calculation results for various hydro-pulse installations are given: a generator of pulse jets, percussive hydro-gun, installation of compression, press-gun, and installation for determination of the water dynamic stretching durability. |
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| TEXT LANGUAGE: Russian |