1. Fifth MIT Conference on “Advances in CFD”. June 2009
Tapan K. Sengupta
High Performance Computing Laboratory
Department of Aerospace Engineering
Indian Institute of Technology Kanpur
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6. Computing time scales with .
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15. Amplification Factors for Adams-Bashforth Method
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22. Numerical properties of some indicated schemes
q-waves are spurious numerical waves created for which the numerical group velocity is opposite of physical group velocity: kh Nc
CD2 + RK4
OUCS3 + RK4
QUICK + RK4
SUPG + RK4
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23. Spectral Resolution and q-Wave Limit of Different Schemes:
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28. Aliasing Error
The following figure illustrates the region that contributes to aliasing:
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29. 1) Sengupta et al. (2009) – JCP, 228(8), 3048- 3071
Ref:
1) Sengupta et al. (2009) – JCP, 228(8),
2) Sengupta et al. (2009) – JCP (in press)
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33. Loss of Dissipation & Compensation by Upwinding for Convection
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38. Bypass Transition - Experiment
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39. Animation for counter-clockwise vortex for c = 0
Animation for counter-clockwise vortex for c = 0.15U; H=5; Γ= 300 & r 0 = 0.8

40. TS Wave & Transient Growth : Flow Past a Flat Plate
Ref.: Sengupta et al.
PRL 96, , (2006)
Here a simultaneous blowing-suction strip exciter is placed in-between x = 2.37 and 2.41 to simulate the receptivity of the APG shear layer.
The excitation is mandatory in this case.
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42. THANK YOU FOR YOUR ATTENTION!
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