Method of impact on free nonstationary air vortices

Mathematical simulation of the near-bottom section of an ascending twisting flow

“…The process of ATF origination, the direction of its twisting, and the ATF structure proposed in [4] are confirmed by the experiments described in [3,[6][7][8][9][10][11][12][13][14].…”

“…One of the main results of experiments [6][7][8][9][10][11][12][13][14] is to create conditions for the destruction of a vortex with vertical grids. The grid parameters are determined: size of cells, wire thickness, and the hight at which the destruction of the vortex with specific characteristics is most probable.…”

“…The term "free vortex" means that there is no forced twist ing in the experiment, i.e., no convective flow gener ated due to heating, no initial air in the room, no table (before heating and in the process of heating). A free vortex predominantly twists in the positive direction (following the terminology of [3,[6][7][8][9][10][11][12][13][14], left screw motion) since Moscow is in the northern hemisphere. The comparison of the experimental data with the data of field tornado observations and visualization of the free vortex motion reveals the identity of the experi mental flows with those observed in nature; in partic ular, twisting of the air volumes adjacent from the inside to the outer boundary of the vertical sections is clearly fixed.…”

Flow structure and turbulent heat and mass transfer at the stagnation point of an impact impulse gas-droplet jet

“…The model developed in this study for calculating pulsed gas droplet flows can evidently also be used (with minimum modifications) for numerical simula tion of fundamentally unsteady (pulsed) two phase concentrated vortices [33][34][35][36].…”

Selecting a thermodynamic cycle for the closed gas-turbine power plant of spacecraft in order to minimize surface of the cooler-radiator

“…and are the total pressure conser vation coefficients of the cold and hot heat transfer medium regenerator, respectively; and and are the total pressure conservation coefficients of the main and auxiliary heat transfer medium heater, respec tively [8,9].…”