Study on stratified thermal flow in a displacement naturally ventilated room with two interacting point heat sources at the same height

This paper studies the influence of two interacting point heat sources at the same height on the stratified thermal flow in a naturally ventilated room. Based on the coupled diffusion law of two interacting plumes of equal strength, the calculation model of thermal stratification height in a naturally ventilated room with two interacting point heat sources at the same height is deduced, and the influences of the height of the heat sources from the floor, opening area and other factors on thermal natural ventilation are analysed. The results show that the dimensionless thermal stratification height increases with the increase of heat source height or equivalent effective opening area. The upper and lower limits of thermal stratification height increase with the increase of heat source height. The independent dimensionless threshold of two heat sources decreases with the increase of heat source height and increases with the increase of equivalent effective opening area.