Interactive flow around two circular cylinders of different diameters at close proximity. Experiment and numerical analysis by vortex method

Hydrodynamic forces on dual cylinders of different diameters in steady currents

“…It can be seen from Fig. 5 that the predicted pressure distributions generally agree well with the experimental data and the numerical results of Tsutsui et al (1997). However, obvious differences between the predicted and measured pressure distributions exist at around y ¼ À801 and 901, as can be seen from Fig.…”

“…The predicted mean drag coefficient ðC D Þ, the root-mean-square (r.m.s.) lift coefficient ðC 0 L Þ and the Strouhal number S t are compared with the experimental data by Schewe (1983) and the numerical results Tsutsui et al (1997) in Table 3. It can be seen that the present numerical results are almost mesh-independent on the fine mesh.…”

“…The cases investigated by Tsutsui et al (1997) have a diameter ratio d/D of 0.45. The gap ratio between the two cylinders G/D is 0.0625.…”

“…The position angle a (defined in Fig. 1) ranges from 901 to 1801 in the study by Tsutsui et al (1997).…”

“…5 is defined by C p ¼ ðp À p 1 Þ=ðrU 2 =2Þ, where p N is the pressure at the inlet. The numerical results by Tsutsui et al (1997) are also included in the figures for the purpose of comparison. It can be seen from Fig.…”