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Simulation des instationären hydraulischen Verhaltens verfahrenstechnischer Anlagen mit langen Rohrleitungen
Author(s) -
Raschke Erhard,
Seelinger Peter,
Sperber Axel,
Straßburger Rolf
Publication year - 1994
Publication title -
chemie ingenieur technik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.365
H-Index - 36
eISSN - 1522-2640
pISSN - 0009-286X
DOI - 10.1002/cite.330660505
Subject(s) - water hammer , transient (computer programming) , hammer , closure (psychology) , condensation , flow (mathematics) , transient flow , mechanics , process (computing) , computer simulation , environmental science , engineering , surge , mechanical engineering , physics , computer science , meteorology , economics , market economy , operating system
Simulation of Transient Hydraulic Behaviour Process Engineering Plant with Long Pipes. A knowledge of transient flow processes is becoming increasingly important for the reliable design and control of process engineering plant. Transient flow processes occur, of example, in long liquid‐carrying pipes: on start‐up and shut‐down of plant, in emergency shut‐downs and fast closure, i.e. when liquid is rapidly decelerated or accelerated. The consequence of such an event is a hammer effect, i.e. a short, often violent change of pressure placing considerable stress on structures. Such hammer effects are readily calculated by numerical methods in single phase media. Technical devices for prevention of inadmissibly high pressures surges can also be designed by means of simulation calculations. However, hammer effects also occur by sudden condensation of vapours. A number of systems in which condensation hammer effects can occur are considered at the end of this contribution. Two special damping measures are presented.