review of some Reynolds number effects related to bodies at high angles of attack
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review of some Reynolds number effects related to bodies at high angles of attack by Edward C. Polhamus

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Published by National Aeronautics and Space Administration, Scientific and Technical Information Branch, For sale by the National Technical Information Service] in Washington, D.C, [Springfield, Va .
Written in English

Subjects:

  • Aerodynamics,
  • Aerodynamics, Transonic,
  • Reynolds number

Book details:

Edition Notes

StatementEdward C. Polhamus ; prepared for Langley Research Center
SeriesNASA contractor report -- 3809
ContributionsLangley Research Center, United States. National Aeronautics and Space Administration. Scientific and Technical Information Branch, Virginia Associated Research Campus
The Physical Object
Paginationvi, 120 p. :
Number of Pages120
ID Numbers
Open LibraryOL14931350M

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ground facilities at high angles of attack and Reynolds number effects have been identified. Lamont 5 conducted a test on an ogive cylinder over a wide range of angles of attack and Reynolds numbers that showed a strong correlation of Reynolds number and boundary-layer state with the maximum overall side force. Shown in. A review of some Reynolds number effects related to bodies. OCLC Number: Notes: Shipping list no.: M. Reproduction Notes: Microfiche. [Washington, D.C.: National Aeronautics and Space Administration, David F. Fisher's 16 research works with citations and reads, including: Forebody Aerodynamics of the F High Alpha Research Vehicle with Actuated Forebody Strakes.

Analysis of high Reynolds numbers effects on a wind turbine airfoil using 2D wind tunnel test data To cite this article: O Pires et al J. Phys.: Conf. Ser. View the article online for updates and enhancements. Related content Study of Reynolds number effect on turbulent boundary layer near the separation A Dród and W Elsner-. The Reynolds number is important for describing the transport properties of a fluid or a particle moving in a fluid. As an example, for very small organism, e.g., bacteria, the Reynolds number is very small, typically in the range of 1 × 10 − the small dimensions, these objects do not have a significant inertia and are thus mainly driven by the viscous forces of the fluid. A low-Reynolds-number, high-angle-of-attack investigation of wind turbine aerofoils S Worasinchai, G Ingram, and R Dominy Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy 6, The data, extracted from a report by Storey (), were obtained at a tunnel speed of ft/s, and the Reynolds number was Re=×10 6 based on mean aerodynamic chord c ¯ ¯. The HP is in fact the well-known Jetstream; however, it is not known if the data shown are representative of .

The test was conducted within the chord-based Reynolds number ranging from × 10⁶ to × 10⁶, and extrapolated to the designed Reynolds number of × 10⁷.   This low-Reynolds-number separation effect is particularly influential on the lift curve for angles of attack of 0 and 2 deg for a Reynolds number of 2 × 10 4. In this range of angle of attack, the separation region can be large enough such that the upper-surface pressure is higher than the lower-surface pressure for most of the chord. A streamlined body looks like a fish, Oropesa, etc. or an airfoil with small angle of attack, whereas a blunt body looks like a brick, a cylinder or an airfoil with high angle of attack. For a given frontal area and velocity, a streamlined body will have lower resistance than a blunt body.   The bubble generally forms toward the aft extent of the airfoil at low angles of attack and then moves forward and contracts with increasing angle of attack (for a 99% confidence level) of and for C l at low and high angles of attack, “ Low-Reynolds-Number Airfoils,” Annual Review of Fluid Mechanics, Vol. 15, No. 1.