ABSTRACT
Problems and solutions presented in this chapter deal with the preliminary design of axial-flow gas turbines. They include analyzing an axial-flow gas turbine stage, analyzing the free-vortex design of an axial-flow gas turbine stage, carrying out the performance analysis of an axial-flow gas turbine stage, finding the number of impulse stages needed in a multistage axial-flow gas turbine, computing the turbine polytropic efficiency in a gas turbine engine, calculating the total-to-static efficiency of an axial-flow gas turbine, finding the specific work output of an axial-flow gas turbine, analyzing the simple-cycle performance of an air-cooled gas turbine, and quickly drawing velocity diagrams from given flow coefficient, loading coefficient, and stage reaction. Detailed discussions of various concepts behind the problems and solutions presented in this chapter may be found in Logan’s Turbomachinery: Flowpath Design and Performance Fundamentals, Third Edition, by Bijay K. Sultanian, published by Taylor & Francis in 2015.
