METHODS FOR SOLVING 3-D GAS DYNAMICS EQUATIONS IN MIXED LAGRANGIAN-EULERIAN COORDINATES

V. V. Zmushko, F. A. Pletenev, V.A.Saraev, I. D. Sofronov
VANT. Ser. Metodiki i Programmy Chislennogo Resheniya Zadach Matematicheskoy Fiziki 1988. Вып.1. С. 22-27.

      Numerical calculation of 3-D equations in gas dynamics is examined. Equations are derived for mixed coordinates where some coordinate lines are Lagrangian and others are Eulerian. A difference scheme is given for a particular coordinate system with two Lagrangian and one Eulerian directions which was obtained from an original Cartesian system.
      Numerical results of 3-D perturbation evolution calculations are discussed for the Rayieigh-Taylor instabiIity.