Discontinuity of graph curve: lift coefficients Cl vs. wing span coordinate Y in vicinity of transition zone between flaps/ailerons and wing

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Jan 24, 2026, 10:01:51 AM (4 days ago) Jan 24
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I am especially interested in applying of aircraft wing’s pressure distribution estimated in VSPAERO and transform the pressure distribution into discrete Finite Element Modell - Nastran solver.   
I built simple wing model in OpenVsp program and run the aerodynamic analysis:   The Aerodynamic calculation results displayed in VSPAERO results manager revealed discontinuity of graph curve: lift coefficients Cl vs. wing span coordinate Y in vicinity of transition zone between flaps/ailerons and wing.
The Calculation of Total Lift Force Lz in calculation spreadsheet according to Cl coefficients stored in file: wing-with-controls.lod showed important change of wing’s Total Lift Force Lz.   

There is possible to avoid: - above mentioned huge discontinuity in Cl distribution along wing span coordinate Y between wing and controls components (huge difference of Cp distribution on wing between wing and controls components)?

VSPAERO Viewer results for Pressure coefficient Cp distribution:
Pressure coefficient Cp distribution - Wing
Pressure coefficient Cp distribution – LHS Flap region enlargement  
Pressure coefficient Cp distribution – LHS Aileron region enlargement
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