text: Using the heat-mass transfer analogy, a mass transfer St equivalent can be found using the Sherwood number and Schmidt number in place of the Nusselt number and Prandtl number, respectively.
  where
  *  is the mass Stanton number;
  * is the Sherwood number based on length;
  * is the Reynolds number based on length;
  *  is the Schmidt number;
  *  is defined based on a concentration difference (kg s m);
  *  is the velocity of the fluid