Citation
Campbell, George Stuart (1956) Turbulence in the Wake of a Thin Airfoil at Low Speeds. Dissertation (Ph.D.), California Institute of Technology. doi:10.7907/T35K-QF86. https://resolver.caltech.edu/CaltechETD:etd-03192004-142218
Abstract
Experiments have been made to determine the nature of turbulence in the wake of a two-dimensional airfoil at low speeds. The experiments were motivated by the need for data which can be used for analysis of the tail-buffeting problem in aircraft design. Turbulent intensity and power spectra of the velocity fluctuations were measured at a Reynolds number 1.6 x 10[superscript 5] for several angles of attack. Total-head measurements were also obtained in an attempt to relate steady and fluctuating wake properties. Mean-square downwash was found to have nearly the same dependence on vertical position in the wake as that shown by total-head loss. For this particular wing, turbulent intensity, integrated across the wake, increased roughly as the 3 /2 power of the drag coefficient. Power-spectrum measurements indicated a decrease in frequency as wing angle of attack was increased. The average frequency in the wake was proportional to the ratio of mean wake velocity to wake width.
Item Type: | Thesis (Dissertation (Ph.D.)) |
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Subject Keywords: | (Aeronautics and Mathematics) |
Degree Grantor: | California Institute of Technology |
Division: | Engineering and Applied Science |
Major Option: | Aeronautics |
Minor Option: | Mathematics |
Thesis Availability: | Public (worldwide access) |
Research Advisor(s): |
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Group: | GALCIT |
Thesis Committee: |
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Defense Date: | 1 January 1956 |
Record Number: | CaltechETD:etd-03192004-142218 |
Persistent URL: | https://resolver.caltech.edu/CaltechETD:etd-03192004-142218 |
DOI: | 10.7907/T35K-QF86 |
Default Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. |
ID Code: | 1005 |
Collection: | CaltechTHESIS |
Deposited By: | Imported from ETD-db |
Deposited On: | 19 Mar 2004 |
Last Modified: | 13 Jul 2023 17:14 |
Thesis Files
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PDF (Campbell_gs_1956.pdf)
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