Experiment ID
| HYCOM_HC020
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Short Description
| Combustion experiments have been carried out in nonuniform obstructed tube of 12.4 m long combined of two parts with diameter of 174 and 520 mm i.d. (Configuration 3). Obstacles spaced by tube diameter. Diameter / Obstruction (BR) for Part 1: 174 mm / 0.6, for Part 2: 520 mm / 0.3.
Combustion of uniform test mixture with 10% of H2 in air was investigated. Ignition point is I2 (Part 2).
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What phenomena were studied
| Effect of tube diameter change (flame propagating from higher to less tube size)
Effect of blockage ratio changes (flame propagating to the area with more degree of obstruction)
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What phenomena / effects can be studied
| Effect of pre-compression in nonuniform geometry
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Instrumentation
| Measurements include 6 piezoresistive transducers and 16 collimated germanium photodiodes. Time resolution of 10 µs. The photodiodes were not calibrated, and they provided flame radiation intensity qualitatively.
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Test variables
| Tube diameter, blockage ratio
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Data description / Data completeness
| All pressure and photo-diode recordings in digital form
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Data availability
| Publicly accessible
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Source of data / Reference
| Kuznetsov M.S, Alekseev V.I., Yankin Yu.G., Dorofeev S.B. Flame acceleration in a tube with variable cross-section. J. Phys. IV France, vol. 12, pp 317-324 (2002)
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Why were chosen
| Very well instrumented, complete description, by the moment no similar results elsewhere are available
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Relevance to the project purposes
| Can address separate phenomena, which are of primary interest for the project purposes
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Experimental data
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Results of simulations
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