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Numerical Analysis of Flow Characteristics in a Pump Sump with Water-Level Variations of River
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외수위 변화에 따른 빗물펌프장 흡수정 흐름특성 수치모의

논문 기본 정보

Type
Proceeding
Author
Kim, Hyung-Jun (서울하천해안항만연구실) Rhee, Dong Sop (한국건설기술연구원 하천해안연구실) Cho, Gil Je (한국건설기술연구원 하천해안연구실)
Journal
한국방재학회 한국방재학회 학술대회 한국방재학회 2014년도 정기 학술발표대회
Published
2014.1
Pages
453 - 453 (1page)

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Numerical Analysis of Flow Characteristics in a Pump Sump with Water-Level Variations of River
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Research history (2)

2017

Numerical Simulation of Flow Characteristics in Detention Basin with Operation Rule of Pump Station : Numerical Simulation of Flow Characteristics in Detention Basin with Operation Rule of Pump Station
Kim ,  Hyung-Jun ,  Rhee and others 6 한국수자원학회 학술발표회 2017.01 Proceeding

2014

Numerical Analysis of Flow Characteristics in a Pump Sump with Water-Level Variations of River
Kim ,  Hyung-Jun ,  Rhee 한국방재학회 학술대회 2014.01 Proceeding
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Abstract· Keywords

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빗물펌프장에 설치된 펌프는 운영되는 동안 홍수시 변화하는 하도의 수위조건에 영향을 받는다. 이러한 하도수위변화는 펌프운영효율을 저하시키는 캐비테이션, 수격 및 서징 등의 현상을 발생시키는 원인이 될 수 있다. 펌프운영효율이 저하하게 된다며, 빗물펌프장으로 유입되는 홍수를 원활하게 배제시키지 못함으로써, 도시내수침수에 의한 홍수를 발생시킬 수 있다. 펌프의 효율을 떨어뜨리는 캐비테이션의 발생원인은 다양하지만, 흡수정 내에서는 흡입관 주위에서 vortex가 발생하여 물과 함께 공기가 유입되어 캐비테이션이 발생하게 된다. 이러한 vortex는 다양한 흐름조건에 의하여 형성되므로, 흡수정 내의 수위조건을 반영한 수치모의를 주로 수행하였다. 본 연구에서는 하천에서 발생한 홍수시 변화하는 수위를 수치모의에 반영하고 흡수정 내의 수위 조건에 따라서 발생하는 흡수정 내의 흐름특성을 분석하였다. 연구에서 적용된 빗물펌프장의 경상남도 김해시의 ${\bigcirc}{\bigcirc}$ 빗물펌프장이다. 펌프가 단일 운영되는 조건과 다중 운영되는 조건에 대하여 수위변화를 적용하여 FLOW-3D 모형을 이용한 3차원 수치모의를 수행하였다.
#빗물펌프장 #흡수정 #캐비테이션 #3차원 수치모의

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