Scalloping of turbine wheel blisk of a radial turbine is done to reduce the centrifugal stress on the disc portion of the blisk, reduce weight and to decrease turbo lag in turbochargers. An attempt has been made to model the effect of scalloping of the turbine wheel on the performance of the radial turbine. The scallops have been modelled as hub clearances and analyses with various depths of scalloping and hub clearances have been analyzed using commercial 3D NS solver. The decrease in efficiency with increased scalloping and hub clearances has been plotted, and the results have been qualitatively compared with experimental results of similar but different radial turbines with and without scalloping. The results of the analyses are found to follow the same trend as those of the experiments.
Effect of Hub Clearance on Performance of Radial Turbine
Lect.Notes Mechanical Engineering
2022-07-24
12 pages
Article/Chapter (Book)
Electronic Resource
English
Effect of Hub Clearance on Performance of Radial Turbine
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