Experimental Investigation of Flow-induced Cavity Resonance
Title | Experimental Investigation of Flow-induced Cavity Resonance PDF eBook |
Author | Paul Zoccola (Jr., J.) |
Publisher | |
Pages | 200 |
Release | 2000 |
Genre | Boundary layer |
ISBN |
Experimental Investigation of Flow-Induced Cavity Resonance
Title | Experimental Investigation of Flow-Induced Cavity Resonance PDF eBook |
Author | Paul J. Zoccola, Jr. |
Publisher | |
Pages | 180 |
Release | 2000-06-01 |
Genre | |
ISBN | 9781423536567 |
The resonant excitation of a cavity by an equilibrium turbulent grazing flow was investigated. The objectives of the research were first, to understand the dynamic processes related to the shear tones generated by vortex shedding from the upstream edge, and then to determine practical techniques for controlling the excitation and reducing the resonance. Detailed measurements of the cavity pressure and the velocity field in the opening were performed. Spectral data on cavity pressure fluctuations were analyzed over a range of speeds to determine the behavior of both the shear tones and cavity tones during non-resonant and resonant conditions. The cross-spectral properties between the velocity components and cavity pressure were also obtained. The data support the finding that the resonant and nonresonant conditions are distinguished by the behavior of the convection velocity and by the distribution of energy production in the flow field. Techniques for controlling cavity resonance were also investigated. The measurements and data analyses techniques discussed above were also performed for three practical devices. These include a technique, developed by the author, whereby fluid is diverted into the cavity from the boundary layer. The diversion technique is the most effective in reducing cavity resonance.
Experimental Investigation of Flow-Induced Cavity Resonance
Title | Experimental Investigation of Flow-Induced Cavity Resonance PDF eBook |
Author | |
Publisher | |
Pages | 180 |
Release | 2000 |
Genre | |
ISBN |
The resonant excitation of a cavity by an equilibrium turbulent grazing flow was investigated. The objectives of the research were first, to understand the dynamic processes related to the shear tones generated by vortex shedding from the upstream edge, and then to determine practical techniques for controlling the excitation and reducing the resonance. Detailed measurements of the cavity pressure and the velocity field in the opening were performed. Spectral data on cavity pressure fluctuations were analyzed over a range of speeds to determine the behavior of both the shear tones and cavity tones during non-resonant and resonant conditions. The cross-spectral properties between the velocity components and cavity pressure were also obtained. The data support the finding that the resonant and nonresonant conditions are distinguished by the behavior of the convection velocity and by the distribution of energy production in the flow field. Techniques for controlling cavity resonance were also investigated. The measurements and data analyses techniques discussed above were also performed for three practical devices. These include a technique, developed by the author, whereby fluid is diverted into the cavity from the boundary layer. The diversion technique is the most effective in reducing cavity resonance.
An Experimental Investigation of Flow-induced Cavity Oscillation
Title | An Experimental Investigation of Flow-induced Cavity Oscillation PDF eBook |
Author | Michael A. Kegerise |
Publisher | |
Pages | |
Release | 1999 |
Genre | |
ISBN |
An Experimental Investigation Into the Suppression of Flow-induced Pressure Oscillations in Two-dimensional Open Cavities
Title | An Experimental Investigation Into the Suppression of Flow-induced Pressure Oscillations in Two-dimensional Open Cavities PDF eBook |
Author | Randall S. Mainquist (1LT, USAF.) |
Publisher | |
Pages | 170 |
Release | 1978 |
Genre | Holes |
ISBN |
IUTAM Symposium on Unsteady Separated Flows and their Control
Title | IUTAM Symposium on Unsteady Separated Flows and their Control PDF eBook |
Author | Marianna Braza |
Publisher | Springer Science & Business Media |
Pages | 588 |
Release | 2009-09-29 |
Genre | Science |
ISBN | 1402098987 |
This Volume is the Proceedings of the IUTAM Symposium on Unsteady Separated Flows and Their Control held in Corfu, Greece, 18–22 June 2007. This was the second IUTAM Symposium on this subject, following the symposium in Toulouse, in April 2002. The Symposium consisted of single plenary sessions with invited lectures, - lected oral presentations, discussions on special topics and posters. The complete set of papers was provided to all participants at the meeting. The thematic sessions of this Symposium are presented in the following: Experimental techniques for the unsteady ow separation Theoretical aspects and analytical approaches of ow separation Instability and transition Compressibility effects related to unsteady separation Statistical and hybrid turbulence modelling for unsteady separated ows Direct and Large-Eddy Simulation of unsteady separated ows Theoretical/industrial aspects of unsteady separated ow control This IUTAM Symposium concerned an important domain of Theoretical and Applied Mechanics nowadays. It focused on the problem of ow separation and of its control. It achieved a uni ed approach regrouping the knowledge provided from theoretical, experimental, numerical simulation and modelling aspects for unsteady separated ows (incompressible and compressible regimes) and included ef cient control devices to achieve attenuation or suppression of separation. The subject - eas covered important themes in the domain of fundamental research as well as in the domain of applications.
Proceedings of the 2nd International Conference on Mechanical System Dynamics
Title | Proceedings of the 2nd International Conference on Mechanical System Dynamics PDF eBook |
Author | Xiaoting Rui |
Publisher | Springer Nature |
Pages | 4383 |
Release | |
Genre | |
ISBN | 9819980488 |