1. A method for determining absorbent article effectiveness of a virtual absorbent article, said method comprising the steps of: providing a virtual body model that represents a physical body; providing a virtual absorbent article model that represents a physical absorbent article; providing virtual simulation software; running a virtual simulation of deformation of said virtual absorbent article model in proximity with said virtual body model; running a virtual simulation of fluid balance of said virtual absorbent article model in proximity with said virtual body model that illustrates how fluid is transferred from the virtual body to the virtual absorbent article, and into the virtual absorbent article using computational fluid dynamics; coupling said virtual simulation of deformation of said virtual absorbent article model and said virtual simulation of the fluid balance of said virtual absorbent article model; and determining absorbent article effectiveness of said virtual absorbent article model in proximity with said virtual body model.