Publications Repository - Helmholtz-Zentrum Dresden-Rossendorf

Comparison between wire-mesh sensors and conductive needle-probes for measurements of two-phase flow parameters

Manera, A.; Ozar, B.; Paranjape, S.; Ishii, M.; Prasser, H.-M.

Measurements of two-phase flow parameters such as void-fraction, bubble velocities, and interfacial area densities have been performed in an upwards air-water flow at atmospheric pressure by means of a four-tip needle-probe and a wire-mesh sensor. For the first time, a direct comparison between the two measuring techniques has been carried out. Both techniques are based on the measurement of the fluid conductivity. For void fraction and velocity measurements, similarity exists between the two methodologies for signal analysis. A significantly different approach is followed, instead, for the estimation of the interfacial area concentration: while the evaluation based on the needle-probe signal is carried out by using projections of the gas-liquid interface velocity, the evaluation based on the wire-mesh signals consist in a full reconstruction of the bubbles interfaces. The comparison between the two techniques shows a good agreement.

Keywords: two-phase flow; interfacial area; needle-probe; wire-mesh sensor

  • Contribution to proceedings
    15th International Conference on Nuclear Engineering (ICONE15), 22.-26.04.2007, Nagoya, Japan
    paper ICONE15-10312
  • Lecture (Conference)
    15th International Conference on Nuclear Engineering (ICONE15), 22.-26.04.2007, Nagoya, Japan
  • Nuclear Engineering and Design 239(2009)9, 1718-1724
    DOI: 10.1016/j.nucengdes.2008.06.015
    Cited 86 times in Scopus

Publ.-Id: 9525