Pressure Drop

Pressure drop is defined as the difference in pressure between two points of a fluid carrying network. Pressure drop occurs with frictional forces, caused by the resistance to flow, on a fluid as it flows through the tube. The main determinants of resistance to fluid flow are fluid velocity through the pipe and fluid viscosity. Pressure drop increases proportional to the frictional shear forces within the piping network. A piping network containing a high relative roughness rating as well as many pipe fittings and joints, tube convergence, divergence, turns, surface roughness and other physical properties will affect the pressure drop. High flow velocities and / or high fluid viscosities result in a larger pressure drop across a section of pipe or a valve or elbow. Low velocity will result in lower or no pressure drop.

Read more about Pressure Drop:  Calculation, See Also

Other articles related to "pressure drop, pressure":

Ledinegg Instability
... For a given mass flux J though the tube, the pressure drop per unit length (which typically varies as the square of the mass flux and inversely as the density ie as ),is ... Thus, as the boiling boundary moves up the tube, the total pressure drop falls, potentially increasing the flow in an unstable manner ... a narrow orifice at the entry, to give a stabilising pressure drop on entry ...
Stripping (chemistry) - Variables
... at nearly the highest temperature and lowest pressure that will maintain the components and not vaporize the liquid feed stream is desired ... velocity is high, and when particularly low pressure drop is desired ... surface area, flow area, and associated pressure drop ...
Moody Chart - Description
... This dimensionless chart is used to work out pressure drop, (Pa) (or head loss, (m)) and flow rate through pipes ... Pressure drop can then be evaluated as or directly from where is the density of the fluid, is the average velocity in the pipe, is the friction factor from the Moody chart, is the ... friction factor is 1/4 the Darcy–Weisbach one and the equation for pressure drop has a compensating factor of four ...
Bingham Plastic - Friction Factor Formulae
... In fluid flow, it is a common problem to calculate the pressure drop in an established piping network ... calculating the pressure drop for evaluating pumping costs or to find the flow-rate in a piping network for a given pressure drop ... the friction factor has been calculated the pressure drop can be easily determined for a given flow by the Darcy–Weisbach equation where is the frictional head loss (SI units m) is the Darcy friction factor (SI ...
Pressure Drop - See Also
... Pressure measurement Darcy–Weisbach equation ( To calculate pressure drop in a channel ) ...

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