Computational Issues in Analysis and Design of Chemical-Laser Flow-Fields
Abstract
In support of the Air Force's airborne laser (ABL) development program. state-of-the-art CFD analysis and design methods have been extended to include the physical models important in chemical oxygen-iodine laser (COIL) systems. The three-dimensional COIL simulation model is based on the CFD flow solver GASP v4 which solves the conservative, finite-volume formulation of the Navier-Stokes equations with general thermo-chemistry. The COIL design software is based on the continuous sensitivity equation method (CSEM) and AeroSoft's flow-field sensitivity solver. SENSE. Extensions to GASP and SENSE include a COIL chemistry mechanism, a multicomponent diffusion model with pressure terms, and coupling with a laser optics resonator module based on the geometric ray-tracing method. In addition, GASP has been modified to include a water-vapor condensation model and a COIL surface catalysis model Simulations have been performed for the RADICL research laser for both power-on and power-off conditions.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 30, 2002
- Accession Number
- ADA408006
Entities
People
- Eugene M. Cliff
- W. M. Eppard