Fluid Mechanics: Open Access

Professor, Engineering, University of Warwick, United Kingdom

Publications

• Editorial   
  Unbalanced Exchange Flow and its Implications
  Author(s): Mark Leeson*
  
  Passive ventilation of buildings at night forms an essential part of a low-energy cooling strategy, enabling excess heat that has accumulated during the day to self-purge and be replaced with cooler night air. Instrumental to the success of a purge are the locations and areas of ventilation openings, and openings positioned at low and at high levels are a standard choice as there's then the expectation that a buoyancy-driven displacement flow will establish and persist. Desirable for his or her efficiency, displacement flows guide excess heat out through high-level openings and cooler air in through low-level openings. Herein we show that displacement flow can't be maintained for the complete duration of a purge. Instead, the flow must transition to an ‘unbalanced exchange flow’, whereby the cool inflow of air at low level is maintained but there's now a warm o.. Read More»
  DOI: 10.37421/2476-2296.2021.8.e109

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