384 research outputs found
Development of a pressure based multigrid solution method for complex fluid flows
In order to reduce the computational difficulty associated with a single grid (SG) solution procedure, the multigrid (MG) technique was identified as a useful means for improving the convergence rate of iterative methods. A full MG full approximation storage (FMG/FAS) algorithm is used to solve the incompressible recirculating flow problems in complex geometries. The algorithm is implemented in conjunction with a pressure correction staggered grid type of technique using the curvilinear coordinates. In order to show the performance of the method, two flow configurations, one a square cavity and the other a channel, are used as test problems. Comparisons are made between the iterations, equivalent work units, and CPU time. Besides showing that the MG method can yield substantial speed-up with wide variations in Reynolds number, grid distributions, and geometry, issues such as the convergence characteristics of different grid levels, the choice of convection schemes, and the effectiveness of the basic iteration smoothers are studied. An adaptive grid scheme is also combined with the MG procedure to explore the effects of grid resolution on the MG convergence rate as well as the numerical accuracy
Aerodynamics of Low Reynolds Number Plunging Airfoil Under Gusty Environment
Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/77398/1/AIAA-2007-71-738.pd
Flapping Wings and Aerodynamic Lift: The Role of Leading-Edge Vortices
Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/76249/1/AIAA-33205-926.pd
Laminar-Turbulent Transition of a Low Reynolds Number Rigid or Flexible Airfoil
Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/76325/1/AIAA-25812-306.pd
Modeling of Fluid Dynamics and Heat Transfer Through Porous Media for Liquid Rocket Propulsion
Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/76873/1/AIAA-2007-5549-179.pd
- …