Experimental Evaluation of Circulation Control Aerodynamics on a Cylindrical Body
Experimental Evaluation of Circulation Control Aerodynamics on a Cylindrical Body
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Date
1987
Authors
Ngo, Hieu Thien
Advisor
Chopra, Inderjit
Citation
Abstract
In this study, an experimental investigation is
conducted on a two-dimensional circulation control
cylinder with blowing taking place from a single spanwise
slot to determine its aerodynamic characteristics. The
results include detailed pressure distributions
(both chordwise and spanwise) for a range of momentum
coefficients and slot locations. The measured results
showed that the lift coefficients up to 4.8 were produced
at momentum coefficients of 0.14 in a turbulent flow
condition. The experimental results of lift coeffficients
Were correlated satisfactorily with analytical results.
The surface flow patterns were observed using the oil and
smoke techniques. Also flow field surveys of the model
Were obtained using total pressure, yaw and pitch probes. A color video display technique was used to present the
results of the flow field surveys. Based on this
evidence, a flow field model of the circulation control
cylinder is presented.