Transactions of the KSME C: Technology and Education (대한기계학회논문집 C: 기술과 교육)

The Korean Society of Mechanical Engineers (대한기계학회)
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Acoustic Structure Interaction Analysis of the Core Support Barrel for Pump Pulsation Loads

펌프 맥동하중에 대한 노심지지배럴 집합체의 음향-구조 연성해석

  • Lee, Jang Won (Dept. of Mechanical & Design Engineering, KEPCO-ENC) ;
  • Moon, Jong Sung (Dept. of Mechanical & Design Engineering, KEPCO-ENC) ;
  • Kim, Jung Gyu (Dept. of Mechanical & Design Engineering, KEPCO-ENC) ;
  • Sung, Ki Kwang (Dept. of Mechanical & Design Engineering, KEPCO-ENC) ;
  • Kim, Hyun Min (Dept. of Mechanical & Design Engineering, KEPCO-ENC)
  • 이장원 (한국전력기술 기계설계그룹) ;
  • 문종성 (한국전력기술 기계설계그룹) ;
  • 김정규 (한국전력기술 기계설계그룹) ;
  • 성기광 (한국전력기술 기계설계그룹) ;
  • 김현민 (한국전력기술 기계설계그룹)
  • Received : 2017.01.20
  • Accepted : 2017.06.29
  • Published : 2017.09.01
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Abstract

The reactor internals shall be secured in safety and structural integrity under various vibrational loading conditions. Thus, U.S. NRC, Regulatory Guide 1.20 requires the evaluation for the reactor internals due to acoustic induced vibration including the response to the reactor coolant pump pressure pulsation. This paper suggests a methodology to develop an analytical model of the core support barrel accounting for the fluid around the structure and to analyze the responses to the pump pulsation loads using acoustic structure interaction analysis. The analysis results were compared with those of US Palo Verde 1 CVAP and showed a good agreement. Thus, it is expected that the suggested methodology could be an efficient way to evaluate the response of the core support barrel to the pump pulsation loads.

원자로내부구조물은 다양한 진동하중조건에서 안전성과 건전성을 유지해야한다. 그러므로 미국원자력규제 위원회는 펌프 압력 맥동에 의한 진동을 포함하여 음향으로 유발되는 진동을 평가하기 위한 규제지침서 1.20을 제시하고 있다. 본 논문은 음향-구조 연성해석 기법을 사용하여 펌프 맥동 가진으로 인한 해석을 위해 노심지지배럴 주변의 유체와 구조의 연성을 고려하여 해석하는 방법론을 제안하였다. 해석결과는 미국 Palo Verde 1호기 종합진동평가 프로그램 발전소 시험결과와 잘 일치한다. 따라서 제안된 해석 방법론은 펌프 압력맥동에 대한 노심지지배럴의 구조응답을 평가하기 위한 효과적 방법으로 판단된다.

Keywords

References

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