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A field-panel approach for transonic flow calculations about 3D configurations

Author(s): D. Fokin, L. Gebhardt, Th. Lutz and S. Wagner Abstract: The purpose of the present work is to develop a mathematically sound and efficient field-panel method for the analysis of inviscid transonic flow over 3D aircraft configurations taking the effects of (weak) shock waves into account. The problem is reduced to a system of two nonlinear integro-differential equations for the disturbance potential in the field and the singularity dis- tribution on a reference surface. An iteration procedure incorporating the boundary element method to satisfy the impermeability conditions on the body (Neumann formulation), coupled with a correction for compressibility effects based on the full potential equation has been developed. The arti- ficial viscosity concept is used to stabilize the process for transonic cases. Exemplary results of... Pages: 10 Size: 1,141 kb Paper DOI: 10.2495/BE010181

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