Author(s)

J.D. Baum, E.L. Mestreau, H. Luo, R. Löhner, D. Pelessone, C. Charman, M.E. Giltrud & Y. Sohn

Abstract

Coupling of CFD and CSD methodologies for modeling blast and structural response J.D. ~aum', E.L. ~estreau', H. LUO', R. ~ohner', D. ~elessone', C. charman', M.E. ~ i l t r u d ~ & Y. soh2 1 Center for Applied Computational Sciences, ASG, SAIC, USA 2 Defense Threat Reduction Agency/TDACS, USA Abstract This paper describes recent algorithm developments and applications of a program that couples parallel Computational Fluid Dynamics (CFD) and Computational Structural Dynamics (CSD) methodologies. FEFL098 is the CFD code used while DYNA3D handles the CSD portion. FEFL098 solves the time-dependent compressible Euler and Reynolds-Averaged Navier-Stokes equations on an unstructured mesh of tetrahedral elements. DYNA3D solves explicitly the large deformation, large strain formulation equations on an unstructured grid composed of bricks and hexahedral elements. While the initial coupled algorithm used the so-called "glued-mesh" approach, where the CFD and CSD faces match identically, failure of this a

Keywords