Details

Autor(en) / Beteiligte

• Banowski, Manuel
• Beyer, Matthias
• Szalinski, Lutz
• Lucas, Dirk
• Hampel, Uwe

Titel

Comparative study of ultrafast X-ray tomography and wire-mesh sensors for vertical gas–liquid pipe flows

Ist Teil von

• Flow measurement and instrumentation, 2017-03, Vol.53, p.95-106

Ort / Verlag

Elsevier Ltd

Erscheinungsjahr

2017

Link zum Volltext

Quelle

Elsevier ScienceDirect Journals Complete

Beschreibungen/Notizen

• Wire-mesh sensors and ultrafast X-ray tomography were developed to investigate two-phase flows with high spatial and temporal resolution. In this study we present results of a comparative study for both imaging techniques, where disperse gas-phase velocity was available from both techniques for the first time. For the experiments we designed a special test section which was operated at HZDR's two-phase flow facility TOPFLOW. A very small vertical distance between X-ray planes and wire-mesh sensor guarantees that lateral flow changes during passage of the respective planes are almost negligible. Experiments were conducted with varying water and air superficial velocities, giving flow regimes from bubbly flow via slug flow to annular flow. Typical experimental results are presented and discussed in detail in this paper. Eventually, the application ranges for both measurement techniques are briefly discussed. •A comparison study between ultrafast X-ray tomography and wire-mesh sensors is presented.•28 different vertical air–water pipe flows were investigated.•The results contain comparisons at gas hold up, velocity and bubble size profiles.•Direct single bubble comparisons are conducted between both measurement systems.•The application ranges of both measurement techniques are discussed.