Abstract
Tests to see how smoke from fires fills large spaces on a ship were carried out. Then experimental fires were simulated with a CFD package based on a modified set of Navier-Stokes equations for thermally driven buoyant flow and Large Eddy Simulation (LES) while also using a two-layer zone model. Descent law and temperature distribution of the smoke were analyzed. Experimental results show that smoke layers descende quickly and smoke temperature is low. As a result, detectors and sprinkler systems which are activated by temperature are at a disadvantage. Computed results and experimental results were compared with each other. Results show that the smoke filling process can be reasonably simulated by large eddy simulation with a zone model. A fire in its growth stage and during its decay period can be described by a t2 curve. Smoke layer height can be read by both the thermocouple method and the camera method, but reasonable results can be obtained from the thermocouple method alone.
Original language | Chinese (Simplified) |
---|---|
Pages (from-to) | 616-620 |
Number of pages | 5 |
Journal | Harbin Gongcheng Daxue Xuebao/Journal of Harbin Engineering University |
Volume | 28 |
Issue number | 6 |
Publication status | Published - 1 Jun 2007 |
Keywords
- Fire
- Large eddy simulation
- Large space cabin
- Smoke filling
- Zone model
ASJC Scopus subject areas
- Control and Systems Engineering
- General Chemical Engineering
- Nuclear Energy and Engineering
- Aerospace Engineering
- Mechanical Engineering