A γ-ray tomographic scanner for imaging voidage distribution in two-phase flow systems

Gas–liquid flow generated by a Rushton turbine in stirred vessel: CARPT/CT measurements and CFD simulations

“…2b). This modification proposed by Kumar et al (1995) has been used to acquire 14 independent projection measurements per detector. The collimator slots have a width of 3.0 mm.…”

“…For image reconstruction the estimation maximization algorithm was used (for further details refer to Kumar et al (1995) and ). The tomography problem is an inverse problem of reconstructing the total effective attenuation function ϑ eff (x, y) based on measurements of the lineaveraged attenuations along various chords in the system of interest.…”

Gamma ray CT application for a process diagnosis

“…When a process unit is large enough for a detector size as in an industrial application, even a lowresolution image can provide a plant engineer with valuable information. 4,5 So our future work will be focused on how to take advantage of high-energy gamma ray sources for a large-scale industrial CT.…”

Characterization of gas-liquid two phase flows using dielectric Sensors

“…They identified bubbly, dispersed bubbly, elongated bubble, slug, stratified, annular-wavy and annular flow patterns using high speed videography. Techniques like X-ray or Gamma ray based measurements are useful where it is not possible to directly observe the two-phase flow [2,3]. Advanced signal and image processing techniques are employed to study the flow regime in the case of transparent materials like glass tubes [4][5][6][7][8][9][10].…”