Development of S3D and Adjoint Design Methods for Efficient Aerodynamic Design of Three-Dimensional High-Speed Compressor Blades

Chung, June

Permalink

https://hdl.handle.net/2142/85073 Copy

Description

Title

Development of S3D and Adjoint Design Methods for Efficient Aerodynamic Design of Three-Dimensional High-Speed Compressor Blades

Author(s)

Chung, June

Issue Date

2002

Doctoral Committee Chair(s)

Ki Dong Lee

Department of Study

Aerospace Engineering

Discipline

Aerospace Engineering

Degree Granting Institution

University of Illinois at Urbana-Champaign

Degree Name

Ph.D.

Degree Level

Dissertation

Keyword(s)

Engineering, Aerospace

Language

eng

Abstract

In the second part of the study, an adjoint design method was employed for compressor design to broaden the range of design capability, to facilitate 3D design applications, and to complement the S3D design method. An adjoint design code was developed, based on a 3D compressor flow analysis code, using the discrete adjoint method for the Euler equations. Unlike external flows where any near-field disturbances are attenuated at far-field, internal flow problems create improper interactions of adjoint variables between boundaries because boundary surfaces are closely facing each other. A validation study on sensitivities reveals that, in internal flow problems, constraints should be imposed on internal boundaries to reflect proper physics of the adjoint system. The design results of the adjoint method indicate that the method enables highly efficient 3D designs by drastically reducing the computational cost of sensitivity analysis and that it can be combined with the S3D method to provide a practical and efficient 3D design tool for transonic compressor blades.

Graduation Semester

2002

Type of Resource

text

Permalink

http://hdl.handle.net/2142/85073

Owning Collections