Download or read book Cavity Flow Oscillation Analysis and Water Table Simulation written by Michael B. Taylor and published by . This book was released on 1989 with total page 98 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Modeling Simulation and Control of Cavity Flow Oscillations written by Clarence W. Rowley and published by . This book was released on 2002 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Modeling Simulation and Control of Cavity Flow Oscillations written by Clarence W. Rowley and published by . This book was released on 2001 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis involves the modeling of self-sustained oscillations in the flow past a rectangular cavity. The emphasis is on developing low-dimensional models that are suitable for analysis using tools from dynamical systems and control theory. Two-dimensional direct numerical simulations are performed, and indicate the presence of a 'wake mode', which has been observed previously in experiments, but which is much less well understood than the 'shear-layer mode' usually observed. We characterize the flow in both shear-layer mode and wake mode, and provide a criterion for predicting the onset of wake mode, as a function of the various geometrical and flow-related parameters. We focus on the modeling of shear-layer mode, and employ two distinct modeling approaches: first, we use the method of Proper Orthogonal Decomposition (POD) and Galerkin projection to reduce the Navier-Stokes equations to a low-dimensional system of ordinary differential equations (ODEs). We extend the method to compressible flows, using approximations that are valid for cold flows at moderate Mach number. In a compressible flow, both the kinematic and thermodynamic variables contribute to the total energy, and an inner product is introduced which respects this, and allows one to use vector-valued POD modes for the Galerkin projection. We obtain models in the form of ODEs with between 2 and 60 states. and compare models based on scalar-valued and vector-valued POD modes. All of the models work well for short times (a few periods of oscillation), but the models based on scalar-valued modes deviate for longer times, while in general the models based on vector-valued modes retain qualitatively correct dynamical behavior. In the second modeling approach, we model the underlying physical mechanisms separately (shear-layer amplification, acoustic scattering, acoustic propagation), and obtain linear models that are suitable for control design and analysis.

Download or read book Voorstellen samenwerking maatschappelijke dienstverlening Doesburg en Angerlo written by and published by . This book was released on 1970 with total page 41 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book 30th Aerospace Sciences Meeting and Exhibit 92 0531 92 0559 written by and published by . This book was released on 1992 with total page 526 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Marine Research written by and published by . This book was released on 1969 with total page 764 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book 28th AIAA Fluid Dynamics Conference 4th AIAA Shear Flow Control Conference written by and published by . This book was released on 1997 with total page 686 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Upstream Mass injection Effects on Cavity Flow Oscillations PIV Measurements and Numerical Simulations written by Abraham J. Meganathan and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book An Experimental Investigation of Open Cavity Pressure Oscillations written by Dennis L. Carr and published by . This book was released on 1974 with total page 74 pages. Available in PDF, EPUB and Kindle. Book excerpt: An experimental study was undertaken to investigate the use of a water table to define the parameters that influence the pressure oscillations resulting from air flow over open cavities. Tests were also conducted to investigate means to eliminate or reduce these oscillations. (Author).

Download or read book Effect of Flow Oscillations on Cavity Drag and a Technique for Their Control written by M. Gharib and published by . This book was released on 1985 with total page 150 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Effect of Finite Cavity Width on the Self sustained Oscillation in a Low mach number Cavity Flow written by Ke Zhang and published by . This book was released on 2009 with total page 350 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1991 with total page 576 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Applied Mechanics Reviews written by and published by . This book was released on 1972 with total page 542 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Control of Cavity Flow Oscillation Through Leading Edge Flow Modifications written by A. Rona and published by . This book was released on 1998 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Pacific International Conference on Aerospace Science and Technology written by and published by . This book was released on 1994 with total page 522 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Experimental Study of Cavity Flow Oscillations with Upstream Mass injection written by Christian R. Gauthier and published by . This book was released on 1990 with total page 154 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Characterization of Cavity Flow Fields Using Pressure Data Obtained in the Langley 0 3 Meter Transonic Cryogenic Tunnel written by Maureen B. Tracy and published by . This book was released on 1993 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt: