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Reliable validation based on optical flow visualization for CFD simulations

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Abstract

A reliable validation based on the optical flow visualization for numerical simulations of complex flowfields is addressed in this paper. Several test cases, including two-dimensional, axisymmetric and three-dimensional flowfields, were presented to demonstrate the effectiveness of the validation and gain credibility of numerical solutions of complex flowfields. In the validation, images of these flowfields were constructed from numerical results based on the principle of the optical flow visualization, and compared directly with experimental interferograms. Because both experimental and numerical results are of identical physical representation, the agreement between them can be evaluated effectively by examining flow structures as well as checking discrepancies in density. The study shows that the reliable validation can be achieved by using the direct comparison between numerical and experiment results without any loss of accuracy in either of them.

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Authors and Affiliations

  1. Key Laboratory of High-Temperature Gas Dynamics, Institute of Mechanics, Chinese Academy of Sciences, 100080, Beijing, China

    Jiang Zonglin

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  1. Jiang Zonglin
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Zonglin, J. Reliable validation based on optical flow visualization for CFD simulations. Acta Mech Sinica 19, 193–203 (2003). https://doi.org/10.1007/BF02484479

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  • DOI: https://doi.org/10.1007/BF02484479

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