When performing transient slurry calculations, the wavespeed for fluids must be adjusted to account for solids suspended in the fluid.

The adjusted equation includes the addition of the bulk modulus and density of the solids, denoted with the 's' subscript, as well as the volumetric concentration of solids, C_v. Equation 21 from Jacobs, 1991Jacobs, B.E.A., Design of Slurry Transport Systems, ELSEVIER SCIENCE PUBLISHERS LTD, New York, NY, 1991. can be rearranged as follows.