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Aerofoil section characteristics in shear flows

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Summary

The technique of Glauert's image method for a single source is applied to determine the image system of a single vortex in shear flows of arbitrary velocity profile. The aerofoil section characteristics are obtained analytically by the extension of the image system for a single vortex and for a single source to those for vortex and source distributions. Numerical calculations are made and the results show the effect on the aerofoil section characteristics of vorticity in flow fields which have been obtained by combining linear shear flows, by comparison with those obtained in uniform flow.

Übersicht

Das Glauertsche Bildverfahren für eine Einzelquelle wird verwendet, um das Bildsystem eines Einzelwirbels in einer Scherströmung von beliebigem Gesclwindigkeitsprofil zu ermitteln. Die Kennwerte für einen Tragflügelquerschnitt werden analytisch dadurch erhalten, daß das Bildsystem für einen Einzelwirbel und eine Einzelquelle zu einer Verteilung von Wirbeln und Quellen erweitert wird. Die Ergebnisse numerischer Lösungen zeigen die Abhängigkeit der Tragflügelkennwerte von der Verwirbelung in Strömungsfeldern mit linearen Scherströmungen und den Vergleich mit den entsprechenden, in gleichförmigen Strömungen erhaltenen Werten.

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Authors and Affiliations

  1. Dep. of Mech. Engng., Faculty of Engng., Tōhoku Univ., Sendai, Japan

    T. Nishiyama

  2. Tohoku Univ., Sendai, Japan

    K. Hirano Post Graduate

Authors
  1. T. Nishiyama
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  2. K. Hirano Post Graduate
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Nishiyama, T., Hirano, K. Aerofoil section characteristics in shear flows. Ing. arch 39, 137–148 (1970). https://doi.org/10.1007/BF00532214

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  • DOI: https://doi.org/10.1007/BF00532214

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