High resolution computation of 2D/3D unsteady flow field in pulsed lasers
Abstract
A 3D TVD (Total Variation Diminishing) algorithm is developed for computing unsteady/steady flows in pulsed lasers. The general approach utilizes a 3D thin layer NavierStokes/Euler solver with source terms in the main channel, 1D Euler solver with source terms in the sidewallmuffler backing volume and a quasisteady channel to backing volume flowexchange model. Explicit time integration of these equations are accomplished via symmetric TVD formulations in an effort to enhance accuracy of the computed solution. Shocktube experiments are performed to generate data base for generic laser related problems and are shown to compare well with the computed solutions. Some aspects of laser flow/acoustic design are then discussed to demonstrate the capability of the code to supplement an overall flow system design effort.
 Publication:

AIAA, Fluid Dynamics, 21st Plasma Dynamics and Lasers Conference, 21st, Seattle, WA, June 1820, 1990. 17 p.
 Pub Date:
 June 1990
 Bibcode:
 1990fdpd.confX....S
 Keywords:

 Computational Fluid Dynamics;
 Pulsed Lasers;
 Three Dimensional Flow;
 Tvd Schemes;
 Two Dimensional Flow;
 Unsteady Flow;
 Euler Equations Of Motion;
 Flow Distribution;
 High Resolution;
 NavierStokes Equation;
 Shock Tubes;
 Fluid Mechanics and Heat Transfer