Flow Pattern Improvement in Nozzle-Rotor Axial Gap in Impulse Turbine

AuthorsAghaei tog R.-Tousi A. M.
JournalAircraft Engineering and Aerospace Technology
Presented byAmirkabir University of Technology
Page number108-116
Serial number2
Volume number86
Paper TypeFull Paper
Published At2014-02-17
Journal GradeScientific - research
Journal TypeTypographic
Journal CountryUnited Kingdom
Journal IndexISI


The appropriate model was used to estimate the turbine performance introduced in the beginning of the work. Then, the nozzle design parameters that are effective in the axial gap flow pattern are optimized using a non-linear optimization code. This code works based on the GA theory. Since the GA results are not conclusive, the selected cases were evaluated using 3D numerical analysis. For a detailed comparison of the flow pattern in initial and improved cases, a transient analysis was done. Experimental tests were performed in order to validate the work. For this purpose, the characteristic curves of the turbines were studied and compared with each other.

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tags: Genetic algorithm, Axial gap, Frozen rotor, Impulse turbine, Transient analysis