Wave process of deformation of a plate with modulus difference

International Applied Mechanics -     

Possible Schemes of Cavity Closure

Two new schemes of incompressible inviscid steady-state symmetric (circulationless) cavitation flow are considered. In these schemes the cavity is closed on a flow domain bounded by a closed streamline encircling either a dipole or twin point vortices with circulations equal in magnitude and opposite in sign. A comparative analysis of the efficiency of applying these schemes is performed for the case of transverse flow past a flat plate. On the cavitation number range 0.01 0.15 the drag coefficient and the relative cavity diameter and length obtained in this study are compared with their values calculated from the Riabouchinsky and Efros schemes. For a particular value of the cavitation number, the shapes of the cavities are also compared. The solutions obtained possess the properties of univalence and closure and satisfy the Brillouin condition.     

Modification of the energy functional for nuclei near the nucleon stability boundary

The effective energy functional for nuclei near the nucleon stability boundary is modified by taking into account that the functional parameters corresponding to interaction in the surface region depend on the neutron and proton chemical potentials μ_n and μ_p, respectively, in a nucleus. By the example of several long isotope chains, it is shown that the μ dependence of the effective interaction results in shifting the neutron stability boundary toward large N-Z values.     

Rigorous solutions of two-dimensional problems of the mechanics of a deformable solid body

Tula Polytechnic Institute, Russia. Translated from Prikladnaya Mekhanika, Vol. 28, No. 10, pp. 3–21, October, 1992.