Numerical studies of unsteady inviscid flows at ONERA
Abstract
Numerical techniques applicable to several types of unsteady inviscid flows are reported. The unsteady flow categories include threedimensional incompressible flows with vortex sheets, and compressible twodimensional flows which either remain close to steady flow or depart considerably from steady flow. The threedimensional incompressible flows are treated by considering the vorticity field to be a volume distribution of vorticity; vorticitycarrying fluid particles provide the discretization. For the compressible twodimensional flows, a method taking into account the nonuniformity of the steady flow is developed. The equations of motion may be linearized with respect to an arbitrary steady potential flow. Solution through the finite difference method is then possible.
 Publication:

ONERA
 Pub Date:
 1978
 Bibcode:
 1978mndf.conf.....G
 Keywords:

 Aerodynamics;
 Finite Difference Theory;
 Inviscid Flow;
 Numerical Analysis;
 Unsteady Flow;
 Compressible Flow;
 Equations Of Motion;
 Flow Velocity;
 Harmonic Oscillation;
 Incompressible Flow;
 Nonuniform Flow;
 Steady Flow;
 Three Dimensional Flow;
 Transonic Flow;
 Two Dimensional Flow;
 Vortex Sheets;
 Fluid Mechanics and Heat Transfer