Surrogate-based analysis and optimization

doi:10.1016/j.paerosci.2005.02.001

Surrogate-based analysis and optimization

2005-01-01

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Rajkumar Vaidyanathan

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P. Tucker

DOI：10.1016/j.paerosci.2005.02.001

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Abstract

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A major challenge to the successful full-scale development of modern aerospace systems is to address competing objectives such as improved performance, reduced costs, and enhanced safety. Accurate, high-fidelity models are typically time consuming and computationally expensive. Furthermore, informed decisions should be made with an understanding of the impact (global sensitivity) of the design variables on the different objectives. In this context, the so-called surrogate-based approach for analysis and optimization can play a very valuable role. The surrogates are constructed using data drawn from high-fidelity models, and provide fast approximations of the objectives and constraints at new design points, thereby making sensitivity and optimization studies feasible. This paper provides a comprehensive discussion of the fundamental issues that arise in surrogate-based analysis and optimization (SBAO), highlighting concepts, methods, techniques, as well as practical implications. The issues addressed include the selection of the loss function and regularization criteria for constructing the surrogates, design of experiments, surrogate selection and construction, sensitivity analysis, convergence, and optimization. The multi-objective optimal design of a liquid rocket injector is presented to highlight the state of the art and to help guide future efforts. (c) 2005 Elsevier Ltd. All rights reserved.

Keywords:

EFFICIENT GLOBAL OPTIMIZATION

MODELING-BASED OPTIMIZATION

SENSITIVITY-ANALYSIS

COMPUTER EXPERIMENTS

DESIGN OPTIMIZATION

APPROXIMATION

AERODYNAMICS

CONVERGENCE

PERFORMANCE

INTEGRATION

Surrogate-based analysis and optimization

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