Effects of base flow uncertainty on Couette flow stability

• Published in: Computers & fluids Vol. 43; no. 1; pp. 82 - 89
• Main Authors: Ko, Jordan, Lucor, Didier, Sagaut, Pierre
• Format: Journal Article Conference Proceeding
• Language: English
• Published: Kidlington Elsevier Ltd 01.04.2011; Elsevier
• Subjects: Base flow; Computational methods in fluid dynamics; Computer simulation; Correlation; Couette flow; Engineering Sciences; Exact sciences and technology; Flow stability; Fluid dynamics; Fluids mechanics; Fundamental areas of phenomenology (including applications); Generalized Polynomial Chaos method; Hydrodynamic stability; Instability of shear flows; Mathematical models; Mechanics; Perturbation methods; Physics; Random field; Stability; Stability analysis; Uncertainty quantification; Flow stability; Uncertainty quantification; Random field; Generalized Polynomial Chaos method; Chaos; Projection method; Modal analysis; Digital simulation; Hydrodynamic instability; Disturbances; Couette flow; Modelling; Karhunen-Loeve transforms; Orthogonal polynomial; Parallel plate
• ISSN: 0045-7930; 1879-0747
• DOI: 10.1016/j.compfluid.2010.09.029

Linear stability analysis of a Couette flow subject to an internal random perturbation is carried out via a stochastic spectral projection method. The uncertain base flow perturbation, which need not be infinitesimally small, is modeled as a Gaussian random field of prescribed correlation length. Th...