Repository logo
 

A tomographic technique for the simultaneous imaging of temperature, chemical species, and pressure in reactive flows using absorption spectroscopy with frequency-agile lasers


Type

Article

Change log

Authors

Cai, W 
Kaminski, CF 

Abstract

jats:pThis paper proposes a technique that can simultaneously retrieve distributions of temperature, concentration of chemical species, and pressure based on broad bandwidth, frequency-agile tomographic absorption spectroscopy. The technique holds particular promise for the study of dynamic combusting flows. A proof-of-concept numerical demonstration is presented, using representative phantoms to model conditions typically prevailing in near-atmospheric or high pressure flames. The simulations reveal both the feasibility of the proposed technique and its robustness. Our calculations indicate precisions of ∼70 K at flame temperatures and ∼0.05 bars at high pressure from reconstructions featuring as much as 5% Gaussian noise in the projections.</jats:p>

Description

Keywords

40 Engineering, 4017 Mechanical Engineering, 4002 Automotive Engineering

Journal Title

Applied Physics Letters

Conference Name

Journal ISSN

0003-6951
1077-3118

Volume Title

104

Publisher

AIP Publishing
Sponsorship
Engineering and Physical Sciences Research Council (EP/F033176/1)
This work was supported by the Seventh Framework Program (Grant Agreement No. PIIF-GA-2012-330840) of the European Union and was performed using the Darwin Supercomputer of the University of Cambridge High Performance Computing Service.