Effects of Inlet Temperature Gradients on Turbomachinery Performance

[+] Author and Article Information
B. Lakshminarayana

Department of Aerospace Engineering, The Pennsylvania State University, University Park, Pa.

J. Eng. Power 97(1), 64-71 (Jan 01, 1975) (8 pages) doi:10.1115/1.3445917 History: Received November 27, 1973; Online July 14, 2010


An analysis is carried out to predict the nature and magnitude of secondary flows induced by temperature gradients in turbomachinery stator and rotor. The effect of this thermal driven secondary flow is severe in gas turbines, due to large temperature gradients that exist at the outlet of the combustion chamber. Secondary flows change the temperature profiles at the exit of the blade row and generate thermal wakes. A method of incorporating these effects into the calculation of gas, blade and casing temperatures in a turbine is demonstrated through an example.

Copyright © 1975 by ASME
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