AIChE Symposium Series, Volume 88, Issue 288

aerosol annular flow annulus average axial boiling pool boundary layer bubble calculated cavity channel condensation cooling correlation critical heat flux debris density diameter distribution droplets effect energy entrainment Equation experimental experiments factor film thickness flow pattern flow rate fluid fuel geometry heat exchanger heat flux heat pipe heat pump heat transfer coefficient heater hydrogen Inconel increased inlet Kg/s laminar liquid flow liquid subcooling loop lunar mass transfer measured melting method microgravity natural convection nozzle nucleate boiling Nusselt Nusselt number occurs oxidation parameters performed phase plate predicted pressure drop radiator ratio reaction reactor refrigerant regime region regolith rod bundle saturation sensor shown in Figure slug steam subchannel superheat surface condensers surface temperature test section thermal conductivity thermocouples transition tube turbulent Two-Phase Flow values vapor velocity vessel wall temperatures viscosity void fraction zone