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Fire Detection Study Using Sound Field Variation Generated by a Gas Ignition Fire in a Cube
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- Authors
- Kang-Ho Park, Sung Q Lee
- Issue Date
- 2014-07
- Citation
- International Congress on Sound and Vibration (ICSV) 2014, pp.1-8
- Language
- English
- Type
- Conference Paper
- Abstract
- The sound field variation generated by a gas ignition fire in a cube is comparatively investigated with the theoretical and experimental studies. The sound pressure field generated by a speaker is measured by four microphones installed within a 60cm cube. The sound pressure level spectral pattern is measured with a variation of air temperature induced by a gas ignition fire and is analyzed in comparison with 3-dimensional COMSOL simulation results. We investigated the spectral change induced by the change of sound velocity as a function of air temperature in a local space of a cube. The spectral position of interference peaks and the spectral pattern shifts to higher frequency depending on the air temperature are well described by the simulation results.
- KSP Keywords
- 3-dimensional, Air Temperature, COMSOL simulation, Fire Detection, Higher frequency, Pressure field, Sound Velocity, Sound field, Sound pressure level, Spectral Pattern, Temperature induced