This paper studies the influence of vertical ribs on the aerodynamic forces of square columns.By the method of large eddy simulation,we study the interference effect of installing vertical ribs on square columns in a uniform flow field.For different rib lengths d and rib distance edge length b,the variation patterns of average lift re-sistance,pulsating lift resistance,flow field structure,and average wind pressure coefficient are investigated with Reynolds number Re=2.2×104.The results show that the length of the floor d significantly affects the aerodynamic co-efficient,the average flow field structure,and the average wind pressure distribution around the model.With the in-crease of the length of the floor,the average drag coefficient and the pull-up drag coefficient of the model decrease significantly.As the length of the rib increases,the average drag coefficient and pulsating lift drag coefficient of the model significantly decrease.Among them,the model with a rib length of 0.10 shows the most significant decrease compared to the square column,with a reduction of 1.50 times and 8.15 times,respectively.Vertical ribs create small-scale vortices on both sides of the model,and local vortices are formed at the angles between the ribs.The in-fluence of the distance between the rib plate and the edge length b on the model is not significant.
vertical rib platelarge eddy simulationdrag coefficientlift coefficientflow field structure
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