A blood type (also called a blood group) is a classification of blood based on the presence or absence of inherited antigenic substances on the surface of red blood cells (RBCs). These antigens may be proteins, carbohydrates, glycoproteins, or glycolipids, depending on the blood group system. complete blood type would describe a full set of 30 substances on the surface of RBCs, and an individual's blood type is one of many possible combinations of blood-group antigens.
Thus, cavitation is the name given to a mechanism in which vapor bubbles (or cavities) in a fluid grow and collapse due to local pressure fluctuations. These fluctuations can produce a low pressure, in the form of vapor pressure of the fluid.
Extent of the pressure losses in pipes and elbows between the valve and, for example, a vessel at constant pressure, influences valve outlet pressure and, hence, flow status. Either flashing or cavitation can exist when the operating point is near the sharp transition from cavitation to flashing at xF = 1.n case of flashing or two-phase flow, it is imperative that a sufficiently large nominal valve size be selected to limit average flow velocity on the downstream side of the valve, thus minimising the problems described in the section on cavitation and flashing.