MODELLING OF HEAT AND CARBON MONOXIDE EMITTED FROM MOVING CARS IN AN UNDERGROUND CAR PARK

This paper presents three numerical models, based on computational fluid dynamics (CFD), to simulate the spatial distribution of temperature and carbon monoxide (CO) concentration in an underground car park. A small one-level car park was chosen to make the models easier to develop in the initial stage. The car park is 25.2m long, 14.0m wide, and 2.6m high, with 14 parking places and entrances/exits at each end. For simplicity, a car is modelled as two rectangular blocks, with one on top of the other. The average-diffused model provides information on the ventilation system's effectiveness at removing the heat and diluting the CO in a well-mixed scenario. The random-stationary and random-average models can account for the movement of cars and the accumulating heat and CO pollution. By assuming that the heat and CO emitted from cars are mixed thoroughly, the random-average model gives more reasonable results than the random-stationary model. The paper compares the distributions of velocity, temperature, and CO for the three models. It explores the possibility that the models can assist the design of the ventilation system of an underground car park. Although the calculations for CFD models of multi-storey car parks are huge, especially for transient simulations, they should be feasible due to rapid computer advances.

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  • Corporate Authors:

    Elsevier

    The Boulevard, Langford Lane
    Kidlington, Oxford  United Kingdom  OX5 1GB
  • Authors:
    • XUE, H
    • HO, J C
  • Publication Date: 2000

Language

  • English

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Filing Info

  • Accession Number: 00796554
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • Files: ITRD
  • Created Date: Aug 2 2000 12:00AM