Acoustic And Thermal Insulation Foam Modelling and Simulation for Space Craft

Abstract

The basis of this project is the modelling and simulation of melamine foam and study of other acoustic and thermal insulation foams . The External Tank of rockets required insulation to maintain the cryogenic fuels, liquid hydrogen, and liquid oxygen as well as to provide additional structural integrity through launch and after release from the Orbiter. Sites for launching large rockets are commonly equipped with some sound suppression system for absorb or deflect acoustic energy produced during a rocket launch. As engine exhaust gasses exceed speed of sound, they will collide with ambient air and then shockwaves are created, with noise levels approaching 200 db. Also foam and insulation protects deep space rocket from fire and ice. The cryogenic fuel, made up of liquid hydrogen and liquid oxygen, that powers the rocket has to stay extremely cold to remain liquid This project included the modelling and simulation of open foam materials having acoustic and thermal insulation properties. COMSOL Multiphysics has proven to be an invaluable virtual laboratory tool in assisting development of a new generation of efficient analytical models describing the acoustics of highly porous fibre and open-cell foam materials. From this project will get an idea for microstructural viscous energy dissipation, oscillatory heat transfer and elasticity towards the three-dimensional foam geometry through simulation software. very promising results for the Melamine foam material, and an excellent prediction of the acoustics of this open-celled porous foam material will be done through this project.