Interference method for obtaining the potential flow past an arbitrary cascade of airfoils

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Description

A procedure is presented for obtaining the pressure distribution on an arbitrary airfoil section in cascade in a two-dimensional, incompressible, and nonviscous flow. The method considers directly the influence on a given airfoil of the rest of the cascade and evaluates this interference by an iterative process, which appeared to converge rapidly in the cases tried (about unit solidity, stagger angles of 0 degree and 45 degrees). Two variations of the basic interference calculations are described. One, which is accurate enough for most purposes, involves the substitution of sources, sinks, and vortices for the interfering airfoils; the other, which may ... continued below

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Katzoff, S; Finn, Robert S & Laurence, James C January 1, 1947.

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  • Main Title: Interference method for obtaining the potential flow past an arbitrary cascade of airfoils
  • Series Title: NACA Technical Reports

Description

A procedure is presented for obtaining the pressure distribution on an arbitrary airfoil section in cascade in a two-dimensional, incompressible, and nonviscous flow. The method considers directly the influence on a given airfoil of the rest of the cascade and evaluates this interference by an iterative process, which appeared to converge rapidly in the cases tried (about unit solidity, stagger angles of 0 degree and 45 degrees). Two variations of the basic interference calculations are described. One, which is accurate enough for most purposes, involves the substitution of sources, sinks, and vortices for the interfering airfoils; the other, which may be desirable for the final approximation, involves a contour integration. The computations are simplified by the use of a chart presented by Betz in a related paper. Illustrated examples are included.

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  • : 93R21239
  • URL: http://hdl.handle.net/2060/19930091949 External Link
  • Report No.: NACA-TR-879
  • Center for AeroSpace Information Number: 19930091949
  • Archival Resource Key: ark:/67531/metadc60185

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National Advisory Committee for Aeronautics Collection

The National Advisory Committee for Aeronautics (NACA) was a U.S. federal agency founded on March 3, 1915 to undertake, promote, and institutionalize aeronautical research. On October 1, 1958 the agency was dissolved, and its assets and personnel transferred to the newly created National Aeronautics and Space Administration (NASA).

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  • January 1, 1947

Added to The UNT Digital Library

  • Nov. 17, 2011, 5:13 p.m.

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  • Feb. 2, 2017, 9:57 p.m.

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Katzoff, S; Finn, Robert S & Laurence, James C. Interference method for obtaining the potential flow past an arbitrary cascade of airfoils, report, January 1, 1947; (digital.library.unt.edu/ark:/67531/metadc60185/: accessed October 18, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.