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Abstract
A numerical analysis of fully developed laminar flow and heat transfer for arrays of interrupted plates positioned convergently-divergently along the flow direction was conducted. The obliquely positioned plates were simulated by a succession of steps. By adequately choosing the computation domain and appropriately assigning the initial values of velocity and temperature, the authors were able to predict this complicated flow in Cartesian coordinates with reasonable computation time. It was found that within the parameter ranges investigated, the thermal performance of the obliquely positioned arrays is better than that of a corresponding plane straight duct.