International Society for Industrial Process Tomography

Customization of the Spatial Resolution in
Chemical Species Tomography

Chang Liu^1*, Stylianos-Alexios Tsekenis¹, Nick Polydorides¹, Hugh McCann¹

¹School of Engineering, The University of Edinburgh, Edinburgh EH9 3JL, U.K

^*Email: c.liu@ed.ac.uk

ABSTRACT

Chemical Species Tomography (CST) has been widely applied to spatially and temporally resolve gas concentrations in reactive flows. The arrangement of optical access beams varies across applications depending on the size of the imaging space and the necessity to detect features much smaller than the imaging space. This work aims to determine the most practical and cost-effective beam arrangement for customized spatial resolution by considering the inhomogeneity of the imaged features. The complexity of the optical layout is minimized, improving the reliability of the CST sensor. Case studies on tomographic imaging of sharp-edged and smooth phantoms are used to quantitatively study how the spatial resolution is varies as a function of the number of projections and the total number of beams.

Keywords Chemical Species Tomography, beam arrangement, spatial resolution, reactive flows

Industrial Application General