SET Proceedings 2978-4387 Caravel Press 10.65582/set.2003.065 2003.065 Numerical simulation and optimization design for ceiling supply air of an underground main workshop in hydropower station ZhangHualing FuXiangzhao MaXiaowen College of Applied technology Chongqing University, Chongqing 400030, P.R.China 24102003 2 1 978-1-995850-10-8 291 296 © 2003 Copyright WSSET 2003

The indoor air distribution of an underground main workshop in hydropower station with different number, location and size of inlets and velocity of supply air were simulated by using the way of computational fluid dynamics (CFD). The air velocity, temperature and their standard deviation of 18 kinds of supply air schemes in the occupied region of the main workshop were obtained. By comparing to these schemes, it is shown that the air distribution with 60 inlets of two lines of symmetry location and supplying velocity of 7.8 m/s is preferable. In addition, a reasonable design method is proposed according to the large volume of supply air and duct of cross-section size in the underground main workshop. Valuable scheme is given for ventilation and air conditioning design of the hydropower station in inviting bids stage.

 numerical simulation air distribution manifold duct resistance calculation 24 to 27 October 2003 2nd International Conference on Sustainable Energy Technologies SET2003 2 Chongqing, China Fu Xiangzhao. Research of ceiling air supply in underground water powerhouse. Heating Ventilation & Air conditioning, 1996.1:59~62. Murakami, S., S. Kato, and Y. Suyama. Three-dimensional numerical simulation of turbulent airflow in ventilated room by means of two-equation model. ASHRAE Transactions 93(2):621-642. Zhao Bin, Li xianting and Yan Qisen. Influence of Turbulence Parameters at supply opening on Indoor Air Distribution. Architecture Heat Energy Ventilation & Air conditioning, 2000.1:1~4. Tao Wenquan. Numerical Heat Transfer. Xian: Publishing house of Xian transportation university,2001. Zhao Rongyi, Fan cunyang. Air Conditioning. Peking: Publishing house of China construct industry,1999. Chen Caikan. Computational fluid Dynamics. Chongqing: Publishing house of Chongqing ,1992. Sun Yijian. Industrial Ventilation. Peking: Publishing house of China construct industry, 1995.