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Experiments in Fluids

, Volume 32, Issue 6, pp 645–651 | Cite as

Flowfield characterisation in the wake of a low-velocity heated sphere anemometer

  • A. M. Olim
  • M. L. Riethmuller
  • M. C. Gameiro da Silva
Article

Abstract

Heated sphere anemometers (HSA) are the most widely used instruments for low-velocity measurements in the heating, ventilation and air-conditioning industry. Experiments were conducted to characterise the flowfield around the spherically shaped sensor and upper probe assembly of a HSA. Particle image velocimetry was the main quantitative experimental technique. Measurements of the flowfield around a HSA probe and a 2:1 scaled-up model were performed in a uniform isothermal axisymmetrical jet air flow at Re around 350, based on sensor diameter, for different pitch angle incident flows. Additionally, extensive flow visualisation studies around scaled-up models of the HSA probe were performed.

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Copyright information

© Springer-Verlag 2002

Authors and Affiliations

  • A. M. Olim
    • 1
  • M. L. Riethmuller
    • 2
  • M. C. Gameiro da Silva
    • 3
  1. 1.Associação para o Desenvolvimento da Aerodinâmica Industrial (ADAI), Rua Pedro Hispano, 12, 3031-601 Coimbra, PortugalPT
  2. 2.Von Karman Institute for Fluid Dynamics (VKI) Chausée de Waterloo, 72, 1640 Rhode St. Genèse, BelgiumBE
  3. 3.Departamento de Engenharia Mecânica Faculdade de Ciências e Tecnologia Universidade de Coimbra Polo II, 3030-201 Coimbra, Portugal e-mail: manuel.gameiro@dem.uc.ptPT

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