Multi-criteria optimisation of subsonic axial compressor blading

Design and simulation of flow through subsonic axial compressor

Abstract―This paper illustrates the theory behind computational fluid dynamics (CFD) of flow though a gas turbine engine low pressure compressor. The goal of study is to develop a tool to perform shape optimization of low speed airfoils. Mathematical model and computational tool are developed using programming software. Analytical solution is developed to create airfoil geometry. The NACA 4 dig...

Tests on High-Reaction Compressor Blading

Two sets of blading, designed for 120 per cent reaction, and for flow coefficients of 0" 667 and 1.0 respectively, have been tested in the N.G.T.E. low-speed compressor No. 106. The performances were compared with those of corresponding sets of 50-percent reaction blading and with predictions based on simple theoretical methods. The high-reaction bladings both gave efficiencies which were lower...

Multi-fidelity Method for Aerodynamic Shape Optimisation of Axial Compressor Blades

In turbomachinery optimisation problems, run time is often a critical factor due to high dimensionality of the design search space. This work explores the use of the multi-fidelity method to speed up an aerodynamic optimisation algorithm applied to axial compressor blades. A rotor blade is optimised in a two-stage blade geometry for maximum isentropic efficiency. The single-fidelity reference o...

Tests on Rough Surfaced Compressor Blading

Analysis of Effect of Basic Design Variables on Subsonic Axial-flow-compressor Perforwce

~ blade-element theory for aanid--ow compre8sor8has been deoeloped and applied to the anulysi8 of the. effects of basic deeign variabkwvuch as Mach number, blude loading, and mJocily didn”buiion on compree80r performance. A graphi.cul method tlwt ia u8efulfor approximate design cakulati0n8 i8 pre8ented. Tle relati0n8 among 8e8eralefinci48 useful in compressor design are derived and &cu8sed. The...