고체 로켓 연소실 내부의 복합 현상에 대한 유체-구조-연소 통합 해석

Abstract

A fluid-structure-combustion interaction of solid propellant rocket interior is carried out by employing the ALE (Arbitrary Lagrangian Eulerian) description. The fluid-structure integration methods and an automatic re-meshing algorithm are included to analyze an unsteady fluid-structure interaction phenomenon with the deformation of solid grain during the simulation. The developed solver is applied for the full burning simulation of a solid propellant grain, which is a highly-coupled unsteady phenomenon between gas flow and propellant structure. Based on the integrated computed results, various multi-physics coupling phenomena (flow physics in the combustion chamber, flame propagation process on grain surface, and the deformation behavior of a solid propellant) are examined.