ABSTRACT
To study the effect of rounded corners on the flow characteristics around piers. This paper uses the computational fluid dynamics software FLUENT to simulate bridge piers with different fillet ratios in a uniform flow field with a Reynolds number of 5.97 × 106. The ratio of the radius of the fillet to the width of the oncoming surface of the pier (fillet ratio) of the three rectangular pier models with a ratio of 0, 25%, and 50% was monitored and compared with the literature results. The variation law of the drag coefficient of the bridge pier with the change of the rounding rate was studied, and the effect of three rounding rates on the flow field of the rectangular bridge pier was analyzed. The results show that: with the increase of the rounding rate, rectangular piers have a significant increase in the flow conductivity, and the piers resistance coefficient is also reduced, rounding rate of 0 when the rectangular piers on the flow field of the largest disturbance, while the rounding rate of 50% of the piers on the surrounding flow field of the smallest range of disturbance, transverse velocity fluctuations are also minimal.
