CALCULATIONAL TECHNIQUE FOR TURBULENT MAKING IN ONE-DIMENSIONAL GAS DYNAMIC FLOWS (VIKHR-TECHNIQUE)

V.A. Andronov, V.I. Kozlov, V.V. Nikiforov, A.N. Rasin, Yu.A. Yudin
VANT. Ser.: Mat. Mod. Fiz. Proc 1994. Вып.2. С. 59-64.

      VIKHR-technique for gravitational turbulent mixing (TM) calculation with (or without) heat conduction is described. One-flow TM model is discussed as a partial case of multi-flow model with pressure gradient infinitesimal in TM-zone.
      The calculational method is based on splitting in terms of physical processes. In the first stage the gasdymamic equations in Lagrangian form with respect to turbulent pressure are solved with implicit difference scheme. Then equations for turbulent values without diffusion terms are integrated using explicit-implicit scheme. In the third stage the radiant heat conduction equation is calculated with weighted implicit difference scheme. In the final stage the diffusion equations for turbulent values, for material concentrations and ones for turbulent heat flow calculation are solved according to purely implicit schemes.
      The technique is implemented in a form of program package VIKHR on IBM PC AT in Fortran.