Experimental Investigation of Frequency Distribution of Vortex Shedding Caused byTriangular Model at ۰ ° Angle

The phenomenon of vortex shedding from bluff body is one of the important phenomena of fluidmechanics. In this research, the downstream flow of the triangular model has been investigated at a Reynoldsnumber of ۶۷۰۰. The results show that despite the fact that in some areas the frequency of vortex shedding isclearly visible, but the instantaneous velocity has frequencies close to the vortex frequency and the frequencyof vortex shedding is not completely pure, vortex shedding has a frequency distribution, so there is a possibilityof error in measuring the frequency of vortex shedding.

کلیدواژه ها:

Hot Wire Anemometer ، Bluff Body ، Vortex Shedding ، Frequency Distribution