Abstract
Steady state surface rothalpy results obtained with a lumped deterministic source term are compared with results obtained from a traditional nonlinear inviscid unsteady solution for an aircraft engine first stage high-pressure turbine rotor configuration. Boundary condition/potential field effects and the order of accuracy of the available schemes are shown to have a significant effect on surface rothalpy results. However, the new technique demonstrates a significant potential for including unsteady effects in time average calculations with minimal computer effort.
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