Experimental determination of the hydrodynamic moment associated with the nonsymmetric penetration of a disk into a compressible fluid

Abstract

The nonsymmetric penetration of a disk (circular cylinder) into a compressible fluid is investigated. The results are obtained by physical modeling. A fluid with a low speed of sound (finely dispersed medium with gas bubbles, whose dimensionless equation of state coincides with the dimensionless equation of state of water [5]) was used as the working medium. The experiments were carried out at entry angles on the interval 54‡ < θ < 88‡, angles of attack on the interval −15‡ < α < +15‡ and Mach numbers on the interval 0.002 ≤ M ≤ 0.2.