The analysis of the flow in the cooling channels of liquid rocket engine thrust chambers is of paramount importance in their structural thermal design. The complete information can only be obtained by costly experiments or by complex numerical simulations, because of the three-dimensional shape of channels and of the coupling among flow evolution in hot-gas and coolant sides and wall heat transfer. Moreover, the coolant is often a supercritical fluid, which needs its appropriate equation of state. A simplified approach is developed in the present paper which, relying on empirical relationships, is able to study the thermal stratification in both the coolant flow and the cooling channel structures.
A simplified model for the analysis of thermal stratification in cooling channels / Pizzarelli, Marco; Nasuti, Francesco; Onofri, Marcello. - ELETTRONICO. - (2007), pp. 1-8. (Intervento presentato al convegno 2nd European Conference for Aerospace Sciences tenutosi a Bruxelles, Belgio nel 1-6 luglio 2007).
A simplified model for the analysis of thermal stratification in cooling channels
PIZZARELLI, MARCO;NASUTI, Francesco;ONOFRI, Marcello
2007
Abstract
The analysis of the flow in the cooling channels of liquid rocket engine thrust chambers is of paramount importance in their structural thermal design. The complete information can only be obtained by costly experiments or by complex numerical simulations, because of the three-dimensional shape of channels and of the coupling among flow evolution in hot-gas and coolant sides and wall heat transfer. Moreover, the coolant is often a supercritical fluid, which needs its appropriate equation of state. A simplified approach is developed in the present paper which, relying on empirical relationships, is able to study the thermal stratification in both the coolant flow and the cooling channel structures.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
