O.A.Buraga, I.G.Nesteruk, Yu.N.Savchenko Comparison of the slender axisymmetrical bodies drag by unseparated and supercavitation flow patterns |
Applied hydromechanics, Vol. 4 (76) ¹ 2, (2002) |
| The volumetric drag coefficients of slender cones for supercavitation flow patterns are calculated. Cavity is assumed as a part of useful volume and determined with the use of the first approximation equation. Analytic formulas for the volumetric drag coefficients due to the friction and pressure distribution are presented. The cases of long and short cavities are considered. Comparison with the drag coefficients of slender axisymmetrical bodies with unseparated flow pattern showed, that at cavity numbers smaller than 0.001, supercavitation flow is preferable, but for larger values of the cavity number, the difference in drags can begin small. A case of short cavities is unacceptable for drag minimization. |
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| TEXT LANGUAGE: Ukrainian |