This paper presents a computational study of unsteady transonic effects on a supercritical laminar airfoil using high-order implicit large-eddy simulation. The unsteady transitional flow behavior on a static CAST10-2 airfoil operating at a chord-based Reynolds number of Re c = 2 × 10 6 , a transonic freestream Mach number of M = 0.73 , and several small angles of attack (0 deg α 1.5    deg ) was examined alongside corresponding inviscid simulations. Shock- and boundary-layer behaviors were found to be rather sensitive, producing significant change in shock structure, flow transition location, and laminar separation bubbles over this small range of α . One intermediate case exhibited a buffeting phenomenon in which flow transition alternated between two positions, causing pronounced oscillations in the pitching moment.


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    Title :

    Unsteady Flow Transition Effects on a Transonic Laminar Airfoil


    Contributors:

    Published in:

    AIAA Journal ; 60 , 9 ; 5083-5093


    Publication date :

    2022-09-01




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English





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