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Implementing unsteady friction in pressure-time measurements
Pöyry SwedPower AB.
Gauldal Consult AS.
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Fluid and Experimental Mechanics.
Norwegian University of Science and Technology (NTNU), Trondheim.
2012 (English)Conference paper, Presentation (Refereed)
Abstract [en]

Laboratory measurements using the pressure‐time method showed a velocity or Reynolds number dependent error of the flow estimate. It was suspected that the quasi steady friction formulation of the method was the cause. This was investigated, and it was proved that implementing a model for unsteady friction into the calculations improved the result. This paper presents the process of this investigation, and proposes a new method for treatment of the friction term in the pressure‐time method.

Place, publisher, year, edition, pages
Research subject
Fluid Mechanics
URN: urn:nbn:se:ltu:diva-31283Local ID: 56c13fff-fe2a-458d-9245-e7362710fd7bOAI: diva2:1004516
International Conference on Hydraulic Efficiency Measurments : 27/06/2012 - 30/06/2012
Godkänd; 2012; 20121217 (andbra)Available from: 2016-09-30 Created: 2016-09-30Bibliographically approved

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