In this paper, the potential of a 3D inverse design method, in which the blade geometry is computed for a specified circulation distribution (directly related to blade loading), as a means of using the flow information obtained from CFD predictions and detailed measurements to effect systematic improvements in turbomachinery design has been explored.
The customer, one of the world’s leading HVAC manufacturers, required the design of a new range of chillers using R1234ze(E) refrigerant. The chiller uses a 2-stage in-line compressor. Both compressors and the return channel need to be designed.
To compare the performance of inducers with different blade loadings, a three-dimensional inverse design method was applied to control the blade loading distribution of inducers. This paper has been presented during the ASME 2002 Fluid Engineering Division Summer Meeting.
When Avio S.p.A launched an internal review of their design systems, it lead to a powerful revamp of the whole aero turbines design process. This led to an improvement in tool quality as well as overall methodology.
The application of the method is explored using a transonic test case, NASA rotor 67. From an understanding of the dynamics of the flow in the fan in relation to its pressure loading distributions,simple guidelines can be developed for the inverse method in
order to weaken the shock formation.