2014
DOI: 10.1155/2014/359606
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Sensitivity Analysis of Unsteady Flow Fields and Impact of Measurement Strategy

Abstract: Difficulty of data assimilation arises from a large difference between the sizes of a state vector to be determined, that is, the number of spatiotemporal mesh points of a discretized numerical model and a measurement vector, that is, the amount of measurement data. Flow variables on a large number of mesh points are hardly defined by spatiotemporally limited measurements, which poses an underdetermined problem. In this study we conduct the sensitivity analysis of two- and three-dimensional vortical flow field… Show more

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Cited by 3 publications
(1 citation statement)
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“…Recent advances in data science techniques have enabled us to extract reduced-order models from vastly large-scale measurements of complex phenomena [30][31][32][33][34][35][36][37][38][39]. Therefore, the optimized sensor measurement is gaining importance for the reconstruction of complex phenomena from sensor measurements based on the data-driven reduced-order models [40,41], as well as for model-free machine learning [42,43] and data assimilation [44][45][46].…”
Section: Introductionmentioning
confidence: 99%
“…Recent advances in data science techniques have enabled us to extract reduced-order models from vastly large-scale measurements of complex phenomena [30][31][32][33][34][35][36][37][38][39]. Therefore, the optimized sensor measurement is gaining importance for the reconstruction of complex phenomena from sensor measurements based on the data-driven reduced-order models [40,41], as well as for model-free machine learning [42,43] and data assimilation [44][45][46].…”
Section: Introductionmentioning
confidence: 99%