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by peterdsharpe
497 days ago
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> when it stops being laminar the flow separates Not true, laminar/turbulent and attached/separated are independent descriptors. Flow can be laminar+attached, laminar+separated (e.g., laminar separation bubbles), turbulent+attached (e.g., the majority of boundary layers on large aircraft), or turbulent+separated. |
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You’re right, I should have said when state changes.
L/T:A/S are theoretically independent, but not independent for a given airfoil. (High-lift airfoils, common in gliders and most airframes with flaps deployed, are turbulent boundary-layer airfoils.)