Numerical Investigation Of Shedding Suppression Of Bluff Body

The suppression of vortex shedding was investigated using the numerical method. Themain objectives of this research were to study the mechanism and effects of vortex sheddingwhen flow over a bluff body, finally investigate reliable numerical strategies to suppress thevortex shedding and find the optimum solution for the based model.In computational study, Structure grid was established for its accuracy. URANS modelwas performed which is Spalart-Allmaras delayed the K-Omega SST model at Reynoldsnumber=. Considering the limited time, typically, the URANS K-Omega SSTmodel was chosen considering its cheap in computation but applying an acceptable resultabout the flow features. Indeed, the variation of lift and drag coefficient is similar to theexperimental results by previously reports. The shape of RMS lift coefficient curve and theresults of effects of the gap ratio is similar to previous research report. The RMS liftcoefficient and Strouhal number was analysed to define the critical points where vortexshedding was stopped. Finally, as expected, the critical angles at different gap ratios wereidentified where vortex shedding suppressed. In fact, it has been noticed that, the vortexshedding can be suppressed by increasing the inflow angles and narrowing the gap ratios.