Contributed by the Fluids Engineering Division for publication in the JOURNAL OF FLUIDS ENGINEERING. Manuscript received by the Fluids Engineering Division June 27, 2002; revised manuscript received March 5, 2004. Associate Editor: T. B. Gatski.
The loss mechanism under consideration in this study is that fraction of turbomachinery blade profile loss 1 due to viscous dissipation and turbulent phenomena in the blade boundary layer. In the consideration of profile loss it is customary to neglect any end wall effects and as such the flow is approximately two-dimensional. Hence loss measurements can be based on cascade tests and boundary layer calculations. It has been proposed in 1 that the concept of entropy generation be used as the key measure of lost performance in turbomachinery, as opposed to the more traditional loss calculation methods based on stagnation pressure and kinetic energy losses. Assessment of loss in terms of the entropy generation...
