If the characteristics of the fluid flow in the region of the foil is known, Bernoulli's principle can be used to determine the lift force on an airfoil.Since, total energy or total head of the fluid remains constant, Total energy=Potential energy+Kinetic energy+Pressure energyĭividing the above equation by g on both sides, The energy of the fluid by virtue of its velocity is called kinetic energy.Īccording to the principle of conservation of energy, total energy of the fluid remains constant. The energy due to fluid’s pressure is called the pressure energy.
H,Z-Height of fluid particle above datum line in m The energy possessed by a fluid by virtue of its position above or below the datum line is called the potential energy.
