V. I. Pegov, I. Yu. Moshkin

APPLYING THE METHOD OF PLANE SECTIONS FOR EVALUATING THE PARAMETERS OF FLIGHT VEHICLES UNDER MULTIPHASE FLOW

Numerical simulation of the underwater motion of flight vehicles launched from underwater is performed. The updated method of plane sections is used to determine the hydrodynamic parameters of flight vehicles under multiphase flow. Hydrodynamic loading can be evaluated through the determination of nonstationary boundaries of a gas cavity and the linear load on the water-flown aft. By the method of plane sections, the 3D boundary value problem of the cavitational flow of a flight vehicle at an attack angle resolves itself into a plane hydrodynamic problem, separate for each section of the cavity. The predicted results are compared with the experimental data. Validation and verification were performed by comparing the analysis results with the experimental data. The applicability of the method of plane sections to the determination of the hydrodynamic parameters of flight vehicles under multiphase flow is demonstrated.

Acknowledgments: The work was performed with the support from the South Urals Federal Research Center of Mineralogy and Geoecology (Ural Branch of the Russian Academy of Sciences) and the Acade-mician V. P. Makeyev State Rocket Centre JSC under the state assignment to SU FRC MG UB RAS, theme No. 0431-2014-0001.

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