| Zugriffsnummer | 35151 |
| Dokumenttyp | Konferenzartikel |
| Sprache | Englisch |
| Titel | Disturbed flow profiles and their effect on gas meters behaviours - systematic investigations and practical conclusions |
| Autor(in); Institution |
Wendt, Gudrun; 1.33, Gasmessgeräte, PTB-Braunschweig
Mickan, Bodo; 1.31, Strömungsmeßtechnik, PTB-Braunschweig
Kramer, Rainer; 1.33, Gasmessgeräte, PTB-Braunschweig
Dopheide, Dietrich; 1.3, Fluidmechanik, PTB-Braunschweig
|
| Quelle/Jahr | North Sea Flow Measurement Workshop 1997:(1997), 24.1 - 24.6 |
| Verlag | Kristiansand: |
| Konferenzangaben | North Sea Flow Measurement Workshop 1997, Kristiansand, 27-30, October, 1997, Norway |
| Zusammenfassung | With in the scope of an extensive PTB research a special facility was built which allows the investigation of flow profiles downstream of several pipe geometries and flow straighteners. Modern and effective miniaturized semiconductor based laser Doppler techniques are used to measure the developing velocity profiles inside the pipe sections of interest. The corresponding reaction of turbine gas meters is determined with a high accuracy and repeatibility using the PTB's flowrate standard facility with critical nozzles. Until more than 150 different flow distributions have been investigated. The results are summarized in a flow profile catalogue which shows the high degree of systematics and generality of the work. On the basis of these results it has become possible to achieve good transparaency of the flow processes taking place in real gas pipe configurations and to explain the mechanism of the interaction between characteristic flow distributions and turbine meter performance. The conclusions concerning the active conditioning of disturbed flows in particular allow optimized pipe lengths and flow conditioners to be recommended with a view to minimizing or eliminating the influence of flow disturbances on the flowmeter behaviour. |
