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2014•City Research Online (City University London)Open access

Convergence of calculated transition loci during computational analysis of transonic aerofoils and infinite swept wings

Chris Atkin

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Abstract

The effect of intermittent re-calculation of transition position is analysed using a low-order VII platform coupled to an Orr-Sommerfeld-type stability analysis method. Transonic aerofoil and infinite-swept wing flows were studied. Where the transition mechanisms are weakly dependent on the gross flow field characteristics, as few as ten transition updates may be required over a 1000- iteration CFD solution, if correctly timed.

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The effect of intermittent re-calculation of transition position is analysed using a low-order VII platform coupled to an Orr-Sommerfeld-type stability analysis method. Transonic aerofoil and infinite-swept wing flows were studied. Where the transition mechanisms are weakly dependent on the gross flow field characteristics, as few as ten transition updates may be required over a 1000- iteration CFD solution, if correctly timed.

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Available abstract

The effect of intermittent re-calculation of transition position is analysed using a low-order VII platform coupled to an Orr-Sommerfeld-type stability analysis method. Transonic aerofoil and infinite-swept wing flows were studied. Where the transition mechanisms are weakly dependent on the gross flow field characteristics, as few as ten transition updates may be required over a 1000- iteration CFD solution, if correctly timed.

Key concepts: Transonic, Airfoil, Swept wing, Convergence (economics), Wing, Aerodynamics, Position (finance), Stability (learning theory)

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