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Flammen in überkritischem Wasser

English title Flames in supercritical water
Applicant Rudolf von Rohr Philipp
Number 111838
Funding scheme Project funding (Div. I-III)
Research institution Institut für Verfahrenstechnik ETH Zürich
Institution of higher education ETH Zurich - ETHZ
Main discipline Civil Engineering
Start/End 01.04.2006 - 31.03.2007
Approved amount 45'144.00
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Keywords (5)

hydrothermal flame; laser-induced fluorescence; supercritical water oxidation; hydrothermal flames; supercritical water

Lay Summary (English)

Lead
Lay summary
The main objective of the proposed work was the experimental characterization and theoretical description of continuously operated turbulent hydrothermal diffusion flames in geometrically simple coaxial burners. First investigations were accomplished using a transpiring-wall reactor. The influence of salts on the hydrothermal flame combustion was of interest. The performance of the reactor was satisfactory, however a better understanding of the hydrothermal combustion process is needed to improve the design of future reactor systems. A novel wall-cooled hydrothermal burner was used to investigate the hydrothermal flame at various conditions. Extensive prearrangements and tests on the reactor/facility were provided, to guarantee an optimal performance of the reactor and the application of optical diagnostics, e.g. Laser-Induced Fluorescence (LIF). The set of provided experiments included the investigation of the ignition and extinction process, measurements of axial temperature profiles of the flame and the imaging of the hydrothermal flame using an intensified CCD camera.
Along with the experiments a computational model has been developed within the framework of a commercial software CFX for the modelling of the hydrothermal flame including advanced physics. Initial results apprear promising when compared to experimental data.
Direct link to Lay Summary Last update: 21.02.2013

Responsible applicant and co-applicants

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Associated projects

Number Title Start Funding scheme
119969 Heat Transfer from Impinging Flames in Supercritical Water Used for Contact-Free Drilling 01.04.2008 Project funding (Div. I-III)
103734 Characterization of Continuous Diffusion Flames in Supercritical Water 01.04.2004 Project funding (Div. I-III)

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