Study of heat transfer of composite lattice structure for active cooling used in the scramjet combustor

Abstract

Considering that the scramjet combustor requires active cooling, a study of composite lattice structure with auxiliary fluid field which is under constant thermal load to provide a stable thermal working condition for electronic components has been conducted using software called ANSYS. Get the data of heat–fluid–solid coupling on the lattice structure whose conformation of core is Kagome and analyse the pressure field and velocity field variation with working time. To evaluate the result of active cooling, Nusselt number and coefficient of convective heat transfer has been computed. Examine the intensity of the model to ensure its safety. It turned out that using composite lattice structure to decrease temperature of the scramjet combustor cannot avoid the blocking of conventional narrow channel but also can cool the combustor. The heat has been used to promote the temperature of the coolant which is originally used as fuel to recycle the energy.

Keywords:

• Active cooling
• Lattice structure
• Scramjet
• FSI
• Composite material