A mixing method for traceable air velocity measurements

Samuli Sillanpää, Martti Heinonen

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1 Citation (Scopus)

Abstract

A novel and quite simple method to establish a traceability link between air velocity and the national standards of mass and time is presented in this paper. The method is based on the humidification of flowing air before the blower of a wind tunnel with a known mass flow of water. Then air velocity can be calculated as a function of humidification water flow. The method is compared against a Pitot-tube-based velocity measurement in a wind tunnel at the MIKES. The results of these two different methods agreed well, with a maximum difference of 0.7%.

Original languageEnglish
Article number085409
JournalMeasurement Science and Technology
Volume19
Issue number8
DOIs
Publication statusPublished - 21 Jul 2008
MoE publication typeA1 Journal article-refereed

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Keywords

  • Air velocity
  • Mass flow
  • Traceability
  • Wind tunnel

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