Elasticity Number
Elasticity number, abbreviated as El, a dimensionless number, is the ratio of elastic force to internal force in viscoelastic flow.
Elasticity Number formula |
||
|
\(\large{ El = \frac{ t \; \eta }{ \rho \; r^2 } }\) (Elasticity Number) \(\large{ t = \frac{ El \; \rho \; r^2 }{ \eta } }\) \(\large{ \eta = \frac{ El \; \rho \; r^2 }{ t } }\) \(\large{ \rho = \frac{ t \; \eta }{ El \; r^2 } }\) \(\large{ r = \sqrt{ \frac{ t \; \eta }{ El \; \rho } } }\) |
||
| Symbol | English | Metric |
| \(\large{ El }\) = elasticity number | \(\large{ dimensionless }\) | |
| \(\large{ t }\) = relaxation time | \(\large{ sec }\) | \(\large{ s }\) |
| \(\large{ \eta }\) (Greek symbol eta) = viscosity | \(\large{\frac{lbf - sec}{ft^2}}\) | \(\large{ Pa - s }\) |
| \(\large{ \rho }\) (Greek symbol rho) = density | \(\large{\frac{lbm}{ft^3}}\) | \(\large{\frac{kg}{m^3}}\) |
| \(\large{ r }\) = pipe radius | \(\large{ in }\) | \(\large{ mm }\) |
Tags: Strain and Stress