Sample Results

For unsteady laminar flow past a rectangular obstacle in a channel, Mukhopadhyay, Biswas and Sundararajan (1992) use MAC algorithm to explicitly march in time. Their results corroborated with the experimental observation of Okajima (1982). A typical example of numerical flow visualization depicting the development of von Karman Vortex Street is illustrated in their work.

The cross-stream velocity vectors behind a delta-winglet placed inside a channel are shown by Biswas, Torri et al. (1996) who used MAC to solve for three-dimensional flow field in a channel containing delta-winglet as a vortex generator. The MAC algorithm has been extensively used by the researchers to solve flows in complex geometry. Braza, Chassaing and Ha-Minh (1986) investigated the dynamic characteristics of the pressure and velocity fields of the unsteady wake behind a circular cylinder using MAC algorithm. Robichaux, Tafti and Vanka (1992) deployed MAC algorithm for large eddy Simulation (LES) of turbulent channel flows. Of course, they performed the time integration of the discretized equation by using a fractional step method (Kim and Moin, 1985). Another recent investigation by Kim and Benson (1992) suggests that the MAC method is significantly accurate and at the same time the computational effort is reasonable.

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