Numerical Simulation on Adding Chamfer Angle of Direct Air Cooling Exhausted Duct for Large Thermal Power Generator

Abstract:

The optimal design for exhausted ducting mode and internal structure in direct cooling exhausted duct system influence every steam to assign the flow obstruction and flow while managing to assign directly.The flowing filed of steam in direct air cooling exhausted duct for 1000MW power generating unit is simulated via Computational Fluid Dynamics(CFD) software under typical steam turbine conditions,and the best chamfer angle can be get by adding different chamfer angles in back of exhaust pipe.The result shows that the steam flows through each distribution pipe with balanced flow under the condition of chamfer angle of 30 °and the flow resistance is much lower than before

• Periodical: Applied Mechanics and Materials (Volumes 501-504)
• Pages: 2288-2292
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.501-504.2288
• Online since: January 2014
• Authors: Chun Qing Wang*, Cai Xia Bian
• Keywords: Chamfer Angle, Direct Air Cooling, Flowing Field, Numeral Simulation

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