Periodic Unsteady Flow Analysis Using a Diagonally Implicit Harmonic Balance Method

Im et al present a harmonic balance method that is applied to periodic unsteady flow problems. To reduce the computational cost and enhance the convergence characteristics, the diagonalized alternating direction implicit scheme was applied to the time integration. A two-dimensional airfoil and a thr...

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Bibliographic Details
Published in:AIAA journal 2012-03, Vol.50 (3), p.741-745
Main Authors: Im, Dong-Kyun, Kwon, Jang Hyuk, Park, Soo Hyung
Format: Article
Language:English
Subjects:
Acceleration
Aerodynamics
Aerospace engineering
Applied fluid mechanics
Computational methods in fluid dynamics
Computer simulation
Exact sciences and technology
Flow velocity
Fluid dynamics
Frequency domains
Fundamental areas of phenomenology (including applications)
Harmonic balance method
Mathematical analysis
Mathematical models
Mathematical problems
Numerical analysis
Physics
Unsteady
Unsteady flow
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Summary:Im et al present a harmonic balance method that is applied to periodic unsteady flow problems. To reduce the computational cost and enhance the convergence characteristics, the diagonalized alternating direction implicit scheme was applied to the time integration. A two-dimensional airfoil and a three-dimensional wing in the pitching motion were applied to verify the performance of the present method with the multigrid method as convergence acceleration technique.
ISSN:0001-1452
1533-385X
DOI:10.2514/1.J051178