Preliminary Design of a Transonic Fan for Low By-Pass Turbofan Engine

Design optimization of axial compressors using numerical simulations requires huge computational efforts. Therefore, the design process needs to be started from a reasonable design point. In the current study, a design tool is developed for the preliminary design of transonic compressors using different correlations of cascade experimental data for the shock losses and the deviation angle. A parametric study is performed to select the design parameters for optimum fan performance in terms of efficiency and surge margin. The designed fan is tested during off design operation and simulated numerically using computational fluid dynamics to verify the developed design tool. The numerical simulations of designed fan show good agreement with the preliminary design results.

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