ABSTRACT

In both the respiratory and the circulatory systems, transport-of gas and blood, respectively-is through tubes. We therefore need to study the transport phenomena in tubes more closely. Fluid dynamics is the branch of science which attempts to understand-and from understanding comes the possibility of prediction —fluids and their behavior. From a fluid dynamics point of view, gases and liquids are both fluids; the only difference between gases and liquids is that their properties (density, for example) have different numerical values.