EXPERIMENTAL RESEARCH FOR FLUID FORCE OF TWO ELASTIC CIRCULAR CYLINDERS IN SIDE BY SIDE ARRANGEMENTS WHEN SUBJECTED TO UNIFORM CROSSFLOW

This paper presents the experimental investigation into hydrodynamicforce of two elastic circular cylinders in side by side arrangements under various gap ratiosT/D in the range of 4.19 ×10￣4 < Re < 9.1×10￣4. The steady and fluctuating pressuredistributions,steady drag and lift and fluctuating drag and lift force were obtained.Theresults show that as V_r>V_(rc),the oscillations of the cylinders affect not only the steadydrag and lift coefficients,but fluctuating drag and lift coefficients as well.There were...