TY - JOUR
T1 - Comparative assessment of different image processing methods to determine the gas–liquid interfacial area in froth regimes of sandwich packings from ultrafast X-ray tomography image data
AU - Sohr, J.
AU - Bieberle, M.
AU - George, G. R.
AU - Flechsig, S.
AU - Kenig, E. Y.
AU - Schubert, M.
AU - Hampel, U.
N1 - Publisher Copyright:
© 2019
PY - 2019/7
Y1 - 2019/7
N2 - Sandwich packings consist of alternatingly stacked structured packing layers of different specific surface area. In such packings froth two-phase flow appears when the packing is operated between the loading limits of the layers. For this highly agitated flow regime, there is a lack of hydrodynamic data, in particular on gas-liquid interfacial area. Ultrafast X-ray tomography, a cross-sectional imaging technique with a frame rate of more than 1000 cross-sectional images per second, is applied to visualize the gas-liquid flow and to extract the gas–liquid interfacial area data via image post-processing methods. For that, we assessed different segmentation methods, that are, level set and gray level contour techniques.
AB - Sandwich packings consist of alternatingly stacked structured packing layers of different specific surface area. In such packings froth two-phase flow appears when the packing is operated between the loading limits of the layers. For this highly agitated flow regime, there is a lack of hydrodynamic data, in particular on gas-liquid interfacial area. Ultrafast X-ray tomography, a cross-sectional imaging technique with a frame rate of more than 1000 cross-sectional images per second, is applied to visualize the gas-liquid flow and to extract the gas–liquid interfacial area data via image post-processing methods. For that, we assessed different segmentation methods, that are, level set and gray level contour techniques.
KW - Gas-liquid interfacial area
KW - Image segmentation
KW - Sandwich packing
KW - Ultrafast X-ray tomography
UR - http://www.scopus.com/inward/record.url?scp=85066924880&partnerID=8YFLogxK
U2 - 10.1016/j.cherd.2019.05.039
DO - 10.1016/j.cherd.2019.05.039
M3 - Article
AN - SCOPUS:85066924880
SN - 0263-8762
VL - 147
SP - 676
EP - 688
JO - Chemical Engineering Research and Design
JF - Chemical Engineering Research and Design
ER -