Yu.N.Savchenko, G.Yu.Savchenko Estimation of efficiency of using the supercavitation on axisymmetric hulls |
Applied hydromechanics, Vol. 6 (78) ¹ 4, (2004) |
| Calculations of the volumetric drag coefficient were performed for the cavitation number range 0.01>s>0.1 and the cone half-angle range 1.5°>b>90° by the example of two schemes of the supercavitation flow - "cone-cavity" and "cone-cavity-cone". The calculations have shown that for slender cones (b>15°) the drag of the frictional force exceeds the pressure drag already when b≥4.5°. The lowest coefficients of the volumetric drag are attained when decreasing the cavitation numbers s and using the cones with large angles b and having a shape close to a disk (b=90°). |
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| TEXT LANGUAGE: Russian |