Acta Mechanica

, Volume 87, Issue 3–4, pp 123–133 | Cite as

New integral equation in the thin airfoil problem

  • S. W. Zhang
  • Y. Z. Chen
Contributed Papers
  • 69 Downloads

Summary

A new integral equation concerning the thin airfoil problem is proposed. In this equation, the unknown function represents vorticity along the thin airfoil, and the right hand term of the equation is chosen as the stream function in two-dimensional potential flow. The equation has a logarithm kernel with a weaker singularity than the known one [1]. After solution of the integral equation, i.e. after determination of vorticity, the lift forces and moment actjing on the thin airfoil can be calculated immediately, as it follows from the Blasius's formulae. Several numerical examples are given.

Keywords

Dynamical System Integral Equation Vorticity Fluid Dynamics Unknown Function 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. [1]
    Glauert, H.: Elements of airfoil and aircrew theory. Cambridge: Cambridge University Press 1937.Google Scholar
  2. [2]
    Kuethe, A. M., Chow, C. Y.: Foundations of aerodynamics. New York: John Wiley & Sons 1976.Google Scholar
  3. [3]
    Milne-Thomson, L. M.: Theoretical hydrodynamics. London: Macmillan Press 1979.Google Scholar
  4. [4]
    Chow, C. Y.: Introduction of computational fluid mechanics. (Chinese Translation, Original in English). Shanghai: Shanghai Jiao Tong University Press 1987.Google Scholar
  5. [5]
    Carey, G. F., Oden, J. T.: Finite elements. Fluid Mechanics6, New Jersey: Prentice-Hall 1986.Google Scholar
  6. [6]
    Prosnak, W. J.: Computation of fluid motions in multiply connected domains. Karlsruhe 1987.Google Scholar
  7. [7]
    Loitsyanskii, L. G.: Mechanics of liquids and gases. (Chinese Translation, Original in Russian). Beijing: High Education Press 1958.Google Scholar
  8. [8]
    Cheung, Y. K., Chen, Y. Z.: New integral equation for plane elasticity crack problems. Theor. Appl. Fract. Mech.7, 177–184 (1987).Google Scholar
  9. [9]
    Chen, Y. Z., Cheung, Y. K.: Integral equation approach for crack problem in elastic half-plane. Inter J. Fract. (to appear) (1990).Google Scholar
  10. [10]
    Ghosh, N., Rajiyah, S., Ghosn, S., Mukherjee, S.: A new boundary element method formulation for linear elasticity. J. Appl. Mech.53, 69–78 (1986).Google Scholar

Copyright information

© Springer-Verlag 1991

Authors and Affiliations

  • S. W. Zhang
    • 1
  • Y. Z. Chen
    • 2
  1. 1.Division of Applied MathematicsJiangsu Institute of TechnologyJiangsuPeople's Republic of China
  2. 2.Division of Engineering MechanicsJiangsu Institute of TechnologyJiangsuPeople's Republic of China

Personalised recommendations