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This chapter illustrates the principles of computing potential flows in unbounded fluid (without a free surface). It applies a strongly simplified source-sink method to the non-lifting flow around a body of arbitrary shape, and the steady lifting flow around an airfoil, both in two space dimensions. In the latter example, the patch method is explained: a variant of the usual panel method, which aims for both simpler formula and better accuracy of the pressure force.

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Numerical Methods to Compute Incompressible Potential Flows

  • 章节

  • 发表日期：

    2026年

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  • Bettar Ould el Moctar,
  • Thomas E. Schellin,
  • Heinrich Söding

摘要

This chapter illustrates the principles of computing potential flows in unbounded fluid (without a free surface). It applies a strongly simplified source-sink method to the non-lifting flow around a body of arbitrary shape, and the steady lifting flow around an airfoil, both in two space dimensions. In the latter example, the patch method is explained: a variant of the usual panel method, which aims for both simpler formula and better accuracy of the pressure force.