Flow Features of Three Side-by-side Circular Cylinders at Low Reynolds Number

Computation of Flow Behind Three Side-by-Side Cylinders of Unequal/Equal Spacing

This paper aims to simulate unstable gap flows of three side-by-side cylinders unequally/equally spaced at T1/d = 1.5 and T2/d = 1.6 in a uniform cross flow (Re=300). The simulation is carried out using ANSYS Flotran 7.0. A mesh-independent study is conducted on a single cylinder at Re=100. The Strouhal number and wake flow characteristics compare well with experimental results. Simulation of t...

Phase-Averaged Analysis of Three-Dimensional Vorticity in the Wake of Two Yawed Side-By-Side Circular Cylinders

Thewake flow behind two yawed side-by-sidecircular cylinders is investigated using athree-dimensional vorticity probe. Four yaw angles (α), namely, 0°, 15°, 30° and 45° and twocylinder spacing ratios T of 1.7 and 3.0 were tested. For T = 3.0, there exist two vortex streets and the cylinders behave as independent and isolated ones. The maximum contour value of the coherent streamwise vorticity *...

High-order accurate simulation of low-Mach laminar flow past two side-by-side cylinders using spectral difference method

0045-7949/$ see front matter Published by Elsevier doi:10.1016/j.compstruc.2008.12.016 * Corresponding author. Tel.: +1 650 724 5479. E-mail address: [email protected] (C. Liang). This paper reports development of a two-dimensional solver for compressible viscous flow using spectral difference (SD) method and its applications on simulating laminar flow past two side-by-side cylinders at vari...

Interaction of two axisymmetric bodies falling side by side at moderate Reynolds numbers

Ordered and chaotic vortex streets behind circular cylinders at low Reynolds numbers

We report some experiments undertaken to investigate the origin of ordered and chaotic laminar vortex streets behind circular cylinders at low Reynolds numbers. We made simultaneous measurements of near wake longitudinal velocity and cylinder lateral vibration amplitude spectra for cylinder Reynolds numbers in the range from 40 to 160. For a non-vibrating cylinder the velocity energy spectra co...