Computational fluid dynamics of flow over a cylindrical tube for steady and transient flow conditions

The primary objective of this numerical study is to analyse the 2D flow across a circular cylindrical tube under various laminar as well as turbulent flow regimes. In this study, the implicit finite volume scheme was employed to compute incompressible flow with time precision using convective flux discretization schemes of the second order. The computational results were validated by comparing the simulation results with empirical data of mean surface pressure, wake characteristics in both constant and transient flow regimes, and the Strouhal frequency associated with vortex scattering. In addition, the present simulation model adequately captures the intricate 2D flow structure of the cylinder wake.