Figure: (Total) pressure in a pipeline system Further pressure losses occur in individual components, e.g. The hydrostatic pressures and dynamic pressures are predetermined by the geometry of the pipeline. The dynamic and hydrostatic pressure are not affected by the energy losses, as these are only the effect of the flow but not the cause. The pressure loss basically refers to the loss of static pressure (or loss of total pressure). Figure: Pressure loss (pressure drop) in a pipeline The friction and flow effects described above are thus accompanied by a corresponding pressure loss (pressure drop). Thus, if pressure means energy, then a loss of energy inevitably means a loss of pressure. In this context, pressure indicates how much energy per unit volume is contained in a fluid. In the article Venturi effect it was already shown in detail that pressure can also be understood as volume-specific energy. Although these turbulences contain kinetic energies, they do not transport them through the pipeline from a macroscopic point of view, but remain in place, so to speak. The faster the fluid flows, the greater the internal friction effect (see also the article on Poiseuille flow).įurther flow losses are caused by turbulences in the fluid, especially at fittings, which serve as obstacles for the flow. On the other hand, frictional effects also occur within the fluid due to the viscosity of the fluid ( internal friction). On the one hand, this is due to friction that occurs between the pipe wall and the fluid ( wall friction). When fluids flow through pipes, energy losses inevitably occur. 3 Pressure loss through individual components (minor loss coefficient).2.2.3 Implicit Colebrook-White equation.2 Pressure loss in pipes (Darcy friction factor).
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