Conditional Averaging of the Fully Developed Stationary Ribbed Duct Flow Using Q Criteria
2007
The fully developed flow in square section ribbed duct was simulated (see Figure 1 (left)). The computation can be characterized by the Reynolds number of 40000 defined by the bulk velocity (Ub) and the hydraulic diameter (Dh). The already experimentally investigated by [1] configuration of high blockage (rib to hydraulic diameter ratio h/Dh = 0.3) was computed. The pitch distance compared to the rib height (p/h = 10) was used presenting a practical situation used in internal cooling channels of turbine blades. In the computation constant mass flow was enforced in the streamwise direction with periodic condition approximating the fully developed flow.
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