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SF Pressure Drop 7.x for Windows calculates pressure drops of flowing liquids and gases in pipes (laminar and turbulent flow). It's also possible to calculate pressure changes caused by vertical difference of pipe and caused by changes of kinetic energy (dynamic pressure change).
SF Pressure Drop calculates also pressure drops in pipe elements (example: changes of direction) and in diverse fittings (valves, bellows etc.). A list of the calculable elements see below.
It's possible to combine diverse elements and so you will get total pressure drop.
To calculate pressure drop you need data of pipes (rougness) and data of flow medium (density, viscosity). These data are available in several databases. An additional possibility to save your own data is the user-defined database.
Database Standard Parts (EN/ISO/DIN/ASME/ANSI)
Dimensions and inner diameter of
Database of properties of liquids and gases and property calculation (density, viscosity)
Further calculation methods
SF Pressure Drop calculates the pressure drop of the following pipe elements:
|Irreversible pressure drops (caused by friction, turbulences and flow separation)|
|Straight pipes||Circular pipe, rectangular pipe, circular ring, channel, corrugated pipe, other forms|
|Pipe entrances||Sharp edged entrance, rounded entrance, sharp edged entrance with angle, inward projecting pipe entrance|
|Changes of section||Sudden and gradual enlargement, sudden and gradual contraction|
|Bends||Circular bend, bend of segments, cast iron bend, rectangular bend, miter bend circular, miter bend rectangular|
|Brandings of current||Tee sharp edged, tee globular, tee rounded bottom plain, tee globular neck rounded, branch flowing asunder, branch flowing together, y-pipe straight, y-pipe bent|
|Bellows||Compensator corrugated tube, lyra-bend, u-bend|
|Valves||Globe valve, globe valve y-pattern, angle valve, gate valve, cock, swing valve|
|Check valves||Check valve globe lift, check valve y-pattern globe lift, check valve swing|
|Nozzles and orifices||Orifice ISO 5167, orifice sharp-edged, orifice round-edged, orifice thick-edged, nozzle, long radius nozzle, venturi tube|
|Perforated plates||Perforated plate thin circular, perforated plate thin rectangular, perforated plate thick circular, perforated plate thick rectangular|
|Strainers and grids||Metal grid circular, metal grid rectangular, metal wire circular, metal wire rectangular, two-plane screen circular, two-plane screen rectangular, y-strainer, screen basket filter, conical strainer|
|Resistance coefficients||Resistance coefficient of circular and rectangular pipes|
|Reversible pressure changes (caused by vertical differences of pipe and by changes of kinetic energy)|
|Reversible pressure changes||Vertical difference, dynamic pressure change of circular and rectangular pipes|