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Study of vapor dispersion characteristics in a maintenance facility for buses running on liquefied natural gas
(LNG)
A good understanding of the dispersion characteristics of natural gas inside a repair shop is
critical for the design of methane detection and facility ventilation systems. Specifically, the dispersion characteristics are needed to
- devise strategies for methane sensor placement
- determine adequate facility ventilation rates
- evaluate various response control strategies
- identify the areas of potential ignition sources
In the present project, COMPACT was used to study the dispersion of methane in a repair shop. The modeling effort
involved the solution of the unsteady equations governing the fluid flow and mass transfer. The model included all the architectural details of the repair shop. Simulations were made for a number of
accident scenarios and ventilation systems.
The results obtained from the model were used to provide guidance for the design of the methane detection system. In addition, the model was used to
evaluate the effectiveness of various ventilation management strategies.
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