A Design Optimization on Coupling Joint between Exhaust Chimney of Electricity Generator and Electromagnetic Pulse (EMP) Shield

EMP 차폐를 위한 비상발전기 연도의 최적 형상 결정

  • Received : 2015.11.17
  • Accepted : 2015.12.19
  • Published : 2015.12.31


The article presents a parametric study on geometrical design optimization for coupling the joint between a large exhaust air chimney and electromagnetic pulse (EMP) shield for gas turbine electricity generator. We conducted computational fluid dynamics (CFD) simulations on hydraulic diameters of waveguide below cutoff(WBC) ranges 800mm~1025mm, the connection distance ranges 150~450mm, and exhaust gas flow velocities at 15, 20, and 25m/s. The results show that the diameter of main chimney, connection distance, and exhaust gas velocity had impacts on flow stream at the EMP shield. To provide a fully developed stream line at three different flow velocity cases, the WBC diameter and distance of connection should be larger than 1050mm and longer than 300mm, respectively.


EMP;Generator;Waveguide Below Cutoff;WBC Array;CFD


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  3. KOREA OCCUPATIONAL SAFETY & HEALTH AGENCY, KOSHA CODE E-84-2011, Technical Report for Design and Application of Emergency Electricity Supplier.


Supported by : 국토교통부