Blar i USN Open Archive på forfatter "Rautenbach, Christo"
-
A comparative study between electrical capacitance tomography and time-resolved X-ray tomography
Rautenbach, Christo; Mudde, Robert F.; Yang, X.; Melaaen, Morten Christian; Halvorsen, Britt (Journal article; Peer reviewed, 2013)Modern day tomographs enable the research community to investigate the internal flow behaviour of a fluidized bed by non invasive methods that partially overcome the opaque nature of a dense bubbling bed. Each tomographic ... -
An Experimental and Theoretical Study of Dense Fluidized Bed Fluid Dynamics
Rautenbach, Christo (Doctoral dissertations at TUC;2012:3, Doctoral thesis; Peer reviewed, 2012-05-31)The papers presented in the present study aim to elucidate the complex fluid dynamic phenomena in a cold dense phase fluidized bed reactor. Theoretical and experimental studies were conducted with this aim and several ... -
Investigation of flow behaviour in biomass gasifier using Electrical capacitance Tomography (ECT) and pressure sensors
Thapa, Rajan Kumar; Rautenbach, Christo; Halvorsen, Britt (Conference object; Peer reviewed, 2011)The particles in a biomass gasifier are mainly a mixture of wood chips, char particles and bed material. The charwood particles have a significant lower density than the bed material, and also a wider range of particle ... -
Investigation of the shifting-parameter as a function of density in the fluidization of a packed bed
Rautenbach, Christo; Melaaen, Morten Christian; Halvorsen, Britt (Conference report, 2010)Accurate predictions of pressure drops in fluidized beds are of great importance in the industry. Up to date no satisfactory correlation exists to predict the pressure drop in a fluidized bed as the bed is traversing from ... -
Investigation of the shifting-parameter as a function of particle size distribution in a fluidized bed traversing from a fixed to fluidized bed
Rautenbach, Christo; Melaaen, Morten Christian; Halvorsen, Britt (Conference object; Peer reviewed, 2010)The particles in a biomass gasifier are mainly a mixture of wood chips, char particles and bed material. The charwood particles have a significant lower density than the bed material, and also a wider range of particle ... -
Statistical diagnosis of a gas-solid fluidized bed using Electrical Capacitance Tomography
Rautenbach, Christo; Melaaen, Morten Christian; Halvorsen, Britt (Journal article; Peer reviewed, 2012)Fluidization experiments were performed using several particle size distributions of spherical glass particles, ranging from Geldart B to D. An Electrical Capacitance Tomography (ECT) tomograph was utilised in the present ... -
The influence of the experimental span of Time-resolved X-ray tomography on dynamic parameters in a fluidized bed
Rautenbach, Christo; Melaaen, Morten Christian; Halvorsen, Britt; Mudde, Robert F. (Journal article; Peer reviewed, 2011)Fluidized beds have presented some problems to experimentalists in the past due to their opaque nature [1]. This problem has however been overcome by non-intrusive nor invasive measurement techniques. X-rays or Gamma rays ...