http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
안병찬,안상대,김원일,안원식,Ahn,Byung-Chan,Ahn,Sang-Dae,Kim,Won-Il,Ahn,Won-Sik 한국방재학회 2008 한국방재학회논문집 Vol.8 No.5
본 연구에서 미국 환경청에서 개발한 SWMM5 모형에 배수갑문 모의기능을 추가하여 수정한 USWMM 모형을 개발했다. 개발된 USWMM의 적용성을 검증하기 위해 안성천 유역을 81개의 소유역으로 분할하고 실제 강우사상을 적용하여 배수위 해석을 수행하고 동연수위표와 평택수위표 및 배수갑문 지점의 관측수위를 대상으로 검 보증을 시도하였다. 그 결과 관측치와 매우 근사했으며, HEC-HMS와 HEC-RAS로 모의한 결과보다 우수한 것으로 나타났다. 그 이유는 USWMM은 HEC-RAS에서 누락된 불완전수중오리피스 흐름과 배수갑문의 관리수위를 설정할 수 있어 실제 배수갑문 운영 현장상황을 동일하게 모의할 수있기 때문으로 보인다. 따라서, 배수갑문과 연계된 하천 배수위 해석에서 USWMM을 범용적인 도구로 활용할 수 있을 것으로 기대된다. USWMM was developed as a drainage analysis system for estuarine urban areas by adding sluice gates on existing EPA SWMM5 through this study. For the purpose of reviewing, Ansungchon river was modeled with USWMM and calibration and verification were attempted at three observation stations. In comparison, another approach using HEC-HMS and HEC-RAS was applied to the area under the same condition. It turned out that USWMM resulting values were closer to the observed values than those of the HEC-HMS and HEC-RAS approach. USWMM`s flow simulation through sluices were more realistic to sluice operation fields by adding incomplete submerged orifice flow equation and maintenance water level. In sum, USWMM can be seen as a general purpose tool for estuarine urban drainage analysis system.
안병찬,오명도 대한설비공학회 2004 설비공학 논문집 Vol.16 No.1
Since the vehicle is regarded as the third living space, the comfortable conditions are required in the passenger compartment. For this reason, customers are concerned about the filtering performances and the importance of filter media has been greatly placed. Therefore the dust holding capacity, the efficiency of these filter media (dry paper, wet paper, non-woven) and the configuration of air filter for vehicle were measured in this study. The following results were obtained on the basis of air filter test. It shows that the thickness and poresize of filter media should be lower for the higher efficiency. The measurement result shows that the performance of round shape filters are higher than the square shape filters. The dust holding capacity of the wet paper and the non-woven paper is higher than the dry paper. As a result, this research can provide an important design parameter and product guidance of the intake air filter for vehicular engine.