In the case of an elastically mounted rectangular prism with a side ratio of less than D/H = 0. 5 (where D: depth of a bluff body in the flow direction. H: height of a bluff body normal to the flow direction). it is well known that low-speed galloping appears at a lower reduced velocity than the resonant reduced velocity. https://herbsdailyes.shop/product-category/lice-formulas/