The shipbuilding industry is booming and the health problems of workers caused by the harsh indoor dock environmentforce us to explore efficient and reasonable ventilation methods suitable for large workshops.Due to t...The shipbuilding industry is booming and the health problems of workers caused by the harsh indoor dock environmentforce us to explore efficient and reasonable ventilation methods suitable for large workshops.Due to the strongspecificity of large workshops,general or local ventilation methods cannot be universally applied.It has great potentialand good economy to improve indoor environment by changing natural ventilation design.Computational fluiddynamics(CFD)has gradually become a powerful tool for predicting indoor and outdoor airflow organization andoptimizing indoor ventilation.This paper adopts CFD to study the effect of the inflow wind speed,the position of theside wall shutters,the area ratio and form of roof ventilators on the effectiveness of natural ventilation in a large shipyarddriven by wind pressure.The results show that the influence on total ventilation volume is more obvious whenthe intake side is shaded than the exhaust side.Different incoming wind speeds will affect the wind pressure at theventilation position,which is the decisive external factor affecting the natural ventilation of docks.When the area ratioof roof ventilators increases to a certain extent,its continued increase has an insignificant effect on the total ventilationvolume.The influence of changing the arrangement of the roof ventilator on the natural ventilation effect can beneglected when the area ratio is kept constant.展开更多
基金supported by Shanghai 2020“Science and Technology Innovation Action Plan”for Social Development Science and Technology Research Project under the project number of 20DZ1207802.
文摘The shipbuilding industry is booming and the health problems of workers caused by the harsh indoor dock environmentforce us to explore efficient and reasonable ventilation methods suitable for large workshops.Due to the strongspecificity of large workshops,general or local ventilation methods cannot be universally applied.It has great potentialand good economy to improve indoor environment by changing natural ventilation design.Computational fluiddynamics(CFD)has gradually become a powerful tool for predicting indoor and outdoor airflow organization andoptimizing indoor ventilation.This paper adopts CFD to study the effect of the inflow wind speed,the position of theside wall shutters,the area ratio and form of roof ventilators on the effectiveness of natural ventilation in a large shipyarddriven by wind pressure.The results show that the influence on total ventilation volume is more obvious whenthe intake side is shaded than the exhaust side.Different incoming wind speeds will affect the wind pressure at theventilation position,which is the decisive external factor affecting the natural ventilation of docks.When the area ratioof roof ventilators increases to a certain extent,its continued increase has an insignificant effect on the total ventilationvolume.The influence of changing the arrangement of the roof ventilator on the natural ventilation effect can beneglected when the area ratio is kept constant.
