This paper suggests a nonlinear pressure consideration scheme through an unsteady pipe network analyzer for leakage detection with a portable pressure wave generator. In order to evaluate the performance of a proposal scheme, linear input pattern has been simulated and experiments had been carried out under both no leakage and one leakage conditions in a reservoir-pipeline-valve system. This method using portable pressure wave generator showed that a leakage can be detected from a reflection where a leakage is originated through time domain analysis. Meaningful similarity in pressure response between nonlinear input pattern and experimental results were found both no leakage and a leakage conditions.

ABSTRACT
1. 서 론
2. 부정류 해석
    2.1 관망 내에서의 압력파 거동
    2.2 특성선 방법
    2.3 관망 누수의 특성선 방법상의 표현
3. 실험 이론 및 장치
    3.1 실험 장치
    3.2 압력파 발생장치를 통한 비선형 압력고려
    3.3 연구 과정
4. 결과 및 고찰
    4.1 무누수 조건에서의 결과 비교
    4.2 누수 발생으로 인한 결과 고찰
5. 결 론
기호 설명
References

• 고동원(부산대학교 공과대학 사회환경시스템공학과) | Dongwon Ko (Department of Civil and Environmental Engineering, Pusan National University)
• 이정섭(부산대학교 공과대학 사회환경시스템공학과) | Jeongseop Lee (Department of Civil and Environmental Engineering, Pusan National University)
• 김진원(수자원기술주식회사) | Jinwon Kim (Water Resources Engineering Corporation)
• 김상현(부산대학교 공과대학 사회환경시스템공학과) | Sanghyun Kim (Department of Civil and Environmental Engineering, Pusan National University) Corresponding author