| Popis: |
A combination of conjugate heat transfer calculations and experiments in a dedicated test rig at Royal Institute of Technology (KTH), Sweden are performed in order to characterize methane’s impact on the nozzle cooling channels in terms of heat transfer, coking and pressure loss. The design procedure includes development of a numerical conjugate heat transfer model as well as inert trials, not only in order to validate model but more importantly to gain experience in order to reduce uncertainties in the final design. In the final design, the methane can be pre-heated to 655 K at pressure levels between 10 to 160 bars and enters the final heater that simulates the heat load from the flame-side with electric cartridges heating a well-insulated copper block. The heat flux is between 1 to 7 MW/m2 for cooling channel flows representative to a full-scale nozzle of an upper stage engine. MERiT - MEthane in Rocket nozzle cooling channels - conjugate heat Transfer measurements |
