High resolution computation of 2-D/3-D unsteady flow field in pulsed lasers
Abstract
A 3-D TVD (Total Variation Diminishing) algorithm is developed for computing unsteady/steady flows in pulsed lasers. The general approach utilizes a 3-D thin layer Navier-Stokes/Euler solver with source terms in the main channel, 1-D Euler solver with source terms in the sidewall-muffler backing volume and a quasi-steady channel to backing volume flow-exchange model. Explicit time integration of these equations are accomplished via symmetric TVD formulations in an effort to enhance accuracy of the computed solution. Shock-tube 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 18-20, 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;
- Navier-Stokes Equation;
- Shock Tubes;
- Fluid Mechanics and Heat Transfer