Estimation of Instantaneous Heat Transfer Coefficients for a Direct-Injection Stratified-Charge Rotary Engine 870444
The main objective of this report was to derive equations to estimate heat transfer coefficients in both the combustion chamber and coolant passage of a rotary engine. This was accomplished by making detailed temperature and pressure measurements in a direct-injection stratified-charge rotary engine under a range of conditions. For each specific measurement point, the local physical properties of the fluids were calculated. Then an empirical correlation of the coefficients was derived by using a multiple regression program. This correlation expresses the Nusselt number as a function of the Prandtl number and Reynolds number.
Citation: Lee, C., Addy, H., Bond, T., Chun, K. et al., "Estimation of Instantaneous Heat Transfer Coefficients for a Direct-Injection Stratified-Charge Rotary Engine," SAE Technical Paper 870444, 1987, https://doi.org/10.4271/870444. Download Citation
C. M. Lee, H. E. Addy, T. H. Bond, K. S. Chun, C. Y. Lu
NASA Lewis Research Center Cleveland, OH, Cleveland State Univ. Cleveland, OH