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RESEARCH PAPERS

Application of the Adjoint Sensitivity Method to the Analysis of a Supersonic Ejector

[+] Author and Article Information
E. Wacholder

Department of Nuclear Engineering, Technion—Israel Institute of Technology, Technion City, Haifa 32000, Israel

J. Dayan

Technion—Israel Institute of Technology, Technion City, Haifa 32000, Israel

J. Fluids Eng 106(4), 425-429 (Dec 01, 1984) (5 pages) doi:10.1115/1.3243141 History: Received February 08, 1983; Online October 26, 2009

Abstract

Although the concepts of various types of ejectors have been thoroughly discussed in the literature during the past sixty years, a rigorous sensitivity analysis of the ejector’s performance has never been presented. In the present work a sensitivity analysis method, based on the use of adjoint functions, is introduced and applied to the one-dimensional model of a supersonic ejector. The advantage of the proposed method over all other possible techniques is that a single computer run can provide the response function sensitivities with respect to all input parameters. The usefulness of the sensitivity coefficients in predicting the ejector’s performance and the uncertainty involved, as well as in the determination of manufacturing tolerances, is demonstrated and proven to be a powerful tool in the design.

Copyright © 1984 by ASME
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