The Effect of Liquids on the Dynamic Motions of Immersed Solids

Abstract

It is known that the presence of liquids can significantly affect the dynamic motions of immersed solids. This paper proposes a method for evaluating fluid forces for use in the dynamic analysis of moving systems in which solid bodies are completely immersed in incompressible, frictionless fluids. A damping parameter is suggested to determine whether a fluid system may be considered frictionless. The incompressibility requirement is also discussed. Experimental data are cited to support the proposed method. Formulas for hydrodynamic masses are tabulated.