The role of the slip coefficient on the flow past the sphere

Abstraet. lJnder cf'ftain circumstances, sOllle f1uids f10w in sllch a Wfl.\' that the Ui;lI1 surfare tellsion al a flnid-solid inlprfan' should playa role ill defilling the appropriale hydrodynamic bOlllldary condition; lhe eITect is incorporaled througlt lhe slip cocfficiCIl1. Furthermore, an experimenl is proposed, has('d 011 ;i can'ful sludy of the Jnotioll of settlillg sphcres, to demonstrate tite previous cOl1tclltioll. The required th(,oT£'tica! tesults, needed to interprl't the OlllrollH' of Iht> experiment, are provided.