This article may be too technical for most readers to understand.(January 2017) |
The Scruton number Sc is an important parameter for vortex-induced vibration (excitation) of structures, vibrations caused by rain or wind, dry inclined cable galloping, and wake galloping, the unstable airflow that forms around bridge cables and other cylindrically-structured buildings. [1] It is named after Christopher "Kit" Scruton, a British industrial dynamics engineer. [2] [3]
It is defined by: [4]
where
is the structural damping expressed by the logarithmic damping decrement, | |
is the effective mass per unit length, | |
is the density of the air, or liquid, | |
is the characteristic width of the structure. |