surface tension number

surface tension number

[′sər·fəs ‚ten·chən ‚nəm·bər] (fluid mechanics) A dimensionless number used in studying mass transfer in packed columns equal to the square of the dynamic viscosity of a fluid times the length of the perimeter of a packing element, divided by the product of the surface area of the packing element, the surface tension, and the density of the liquid. Symbol Ts .