| Popis: |
Profile loss is a main part of cascade aerodynamic losses in all breakdown schemes. In previous literature, the well known and mostly accepted correlations for profile loss should be the Kacker and Okapuu design-point and the Benner et al. off-design correlations. However, the two correlations had been devised separately with different form. The present paper is motivated to combine the two correlations to form a universal correlation for all operating conditions. By defining an incidence correction factor, a universal profile loss correlation for all operating conditions is developed. The effects of incidence on the midspan profile loss are examined through numerical simulations and analyses. Beneficial conclusions are obtained in the end. |
