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Problem Specification

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The purpose of this tutorial is to illustrate the setup and solution of a steady an unsteady flow past a circular cylinder and to study the vortex shedding phenomenon. Flow past a circular cylinder is one of the classical problems of fluid mechanics. For this problem, we will be looking at Reynolds number of 20150. 

Re = ρVD/μ

We know D = 2 m. To obtain Re = 20150, we can arbitrarily set ρ, v and μ. For our case, let's set ρ = 1 75 kg/m ³ , v = 1 m/s and μ = 0. 1 kg/ms.

Preliminary Analysis

For Re = 20150, we are looking at steady laminar flowunsteady flow with periodic vortex shedding. What will be the velocity profile shedding frequency of this flow? What will be the drag coefficient of the cylinder? What will be the pressure coefficient around cylinder? How will the streamlines around cylinder look vortex shedding looks like?

Let's start the modeling in our quest to find out the answer!

We'll create the geometry and mesh in GAMBIT which is the preprocessor for FLUENT, and then read the mesh into FLUENT and solve for the flow solution.

Go to Step 1: Create Geometry in GAMBIT

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