Venting dynamics of compressed natural gas from vehicle pressure relief devices: Experiments and computational fluid dynamics modeling
Source abstract
Abstract
This study investigates the venting behavior of compressed natural gas from passenger vehicle fuel tanks through temperature-triggered pressure relief devices at full capacity (200 bar). Experimentally measured mass loss rates were calculated to provide gas source boundary conditions for compressed natural gas dispersion modeling and to support evaluation of methods for predicting gas flow from pressurized systems in accidental releases. Using air as a venting gas, near-field flow patterns were qualitatively analyzed, revealing four characteristic regimes: (1) air entrainment from behind the vehicle, (2) left rear wheel recirculation, (3) forward-directed flow under the car, and (4) right rear wheel free jet. These regimes were confirmed in a full-scale vehicle fire test, demonstrating the relevance of the observed flow patterns for real fire scenarios and providing an experimentally supported framework for hazard assessment and risk evaluation of accidental compressed natural gas release.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Fire dynamics and safety research · Combustion and Detonation Processes · Wind and Air Flow Studies
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Technical Institute of Fire Protection, Prague, Czech Republic
University of Chemistry and Technology, Prague, Czech Republic
Department of Physics, Faculty of Civil Engineering, Czech Technical University, Prague, Czech Republic
Institute of Hydrodynamics, Czech Academy of Sciences, Prague, Czech Republic
Funding
Ministerstvo Vnitra České Republiky
References (23)
Show source-provided references
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