The bulk viscosity of a fluid is defined as
where is the second viscosity coefficient and is the shear viscosity.
Lamé Constants, Navier-Stokes Equations, Second Viscosity Coefficient, Shear Viscosity, Viscosity
Faber, T. E. Fluid Dynamics for Physicists. New York: Cambridge University Press, 1995.
of a fluid is defined as
is the second viscosity coefficient and 
is the shear viscosity.
Lamé Constants, Navier-Stokes Equations, Second Viscosity Coefficient, Shear Viscosity, Viscosity
