http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
- 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
RISS 인기검색어
- 검색키워드
- 저자 : 정만 (검색결과 62 건)
- 무료
- 기관 내 무료
- 유료
-
-
정만 ( Mahn Chung ) 한국환경기술학회 2005 한국환경기술학회지 Vol.6 No.3
광양내만의 약 23%가 매립된 광양만에서의 조위와 유속의 변화를 구명하기 위하여, 복잡한 경계처리가 용이한 유한요소모형인 RMA2 모델을 사용하여 수치실험을 하였다. 그 결과 대부분의 만과 묘도주변에서의 유속이 매립전에 비해서 감소한 것으로 나타났으며, 묘도 북측 수로보다는 남측 수로에서의 유속감소 폭이 크게 나타났다. 조위의 변동은 5개 지점에서 조사하였는데 전반적으로 증가하는 것으로 밝혀졌다. 매립만으로 인한 조위의 증가는 준설의 영향으로 감소하는 것으로 나타났으며 대조 만조시에 조위의 증가폭이 가장 크며, 만의 서측으로 갈수록 조위의 증가폭이 커지는 것을 확인할 수 있었다. The purpose of this study is to verify the change of the water surface elevation and velocity after and before development in Gwangyang bay reclaimed at about 23%. The numerical analysis was executed using a RMA-2 model of the finite element method. As a result, it turned out that the flow velocity around the Myodo sea area in Gwangyang bay decreased. As comparing the north channel of Myodo island to the south channel of Myodo island, the south channel of Myodo island was showing more than 10% of decrease in flow velocity. The change of water surface elevation was calculated at 5 points in Gwangyang bay. At the high waters of spring tides, it was founded that generally the water surface elevation after reclamation increased relative to before reclamation in Gwangyang bay and as going to the west in Gwangyang bay, the amount of increase was getting larger.
-
한국주요지점에 대한 확률강우량과 관측최대강우량의 확률분석
정만,이정규,Jeong, Mahn,Lee, Jong-Kyu 한국수자원학회 1981 물과 미래(한국수자원학회지) Vol.14 No.3
우리나라의 주요 도시 서울, 부산, 대구, 광주의 지점강우량에 대하여 확률적인 방법과 M년 최대치법에 의하여 그 특성이 해석되었으며 일본의 해석결과와도 비교되었다. 본 연구에서 얻어진 결과는 다음과 같다. T년확률강우가 N년 동안에 발생하지 않은 확률은 관측치로부터 분석된 값과 비교하여 볼 때 이론치보다 작았으며 일본의 결과보다는 컸다. M년 10분 최대치가 N년 동안에 발생하지 않은 확률의 평균치는 이론치보다 컸으며 M년 1시간 최대치는 이론치보다 작았고 M년 1일 최대치는 이론치와 거의 일치했으며 일본의 경우는 이론치보다 작았다. 상기 결과에 의하여 확률적인 면에서 본다면 M년 최대강우를 설계량으로 택하는 것이 T년 확률강우보다 안전측이라고 생각된다. The characteristics of point rainfall for three different durations in Seoul Pusan Taegu and Gwangju have been analysed by the probabilistic ainfall method and the M-year maximum rainfall method. The probabilities that the T-year probabilistic rainfall did not occur during the observation period, compared with the values obtained from the observed data. were smaller than the theoretical values. The averages of the probabilities that the M-year maximum-ten-minute rainfall did not occur in the consequent N-years were larger than the theoretical values, the M-year maximumone hour rainfall were smaller than the theoretical ones, and the M-year maximum daily rainfall nearly agreed with them, and while those of Japan were smaller than the theoretical values. It is recommended from the results that the recorded maximum value should be used as a design value rather than the probabilistic rainfall.
-
정만 여수대학교 1997 論文集 Vol.11 No.2
A Damages of the public structures by localized torrential downpour burdened the Nationality with high cost and cause social life inconvenience. To reduce these damages. It is very useful that the cause of the failures are clear by the collection and analyse of the past failure data. It is inferenced that the failure cause of small dam is missing the sluice opening time and the failure cause of bridges is the insufficiency of the resisting force to drag force. Therefore. It is necessary for small dam keep in touch with the water resources management of the multipurpose dam and for bridge is reinforced with the design of the bridge piers and abutment to resist with scour and drag force.
-
저수로형 방파제의 파랑 전달율에 관한 실험적 연구 (1)
정만 전남대학교 수산과학연구소 1996 수산과학연구소논문집 Vol.5 No.-
Hydrau1ic experiments were carried out to investigate the hydraulic charactcristics of the breakwater with two types of under conduit for regular waves of various heights and periods. 1t was found that the small value of steepness(HfL; ratio of wave height(H) to wave length(L)) and relative depth(djL; ratio of water depth(d) to wave length(L)) and the large value of period(T) have big transmission coefficient at breakwater with two types of under conduits. The larger wave steepness and relative depth, the smaller wave transmission rate. There was little difference of transmission at breakwater with small perforated rate.
-
정만 여수대학교 1998 論文集 Vol.13 No.2
Tidal propagation in the Sumjin River was perfomed via one-dimensional numerical model. The model was used to compute tidal distribution of the Sumjin River for low water flow, flood flow and to investigate the water level response within tidal regime by combined tides and flood discharges effects. Some of results are presented and discussed.
-
댐건설에 따른 지표변화 분석을 위한 RS 기법의 적용에 관한 연구
정만,이근상,정재성 여수대학교 2002 論文集 Vol.17 No.-
It becomes base data for topographic and hydrologic analysis that evaluate surface change of basin, Various research using remote sensing recently is progressing, and it becomes indicator that analyze surface cange that evaluate land cover of surface using multi-spectral band. Maximum Likelihood Method is used with Landsat TM image in order to analyze surface change by yongdam dam construction in this study. There was no bi change in forest, dry field, build p area as analysis result. But, paddy area decreased from 15.07% in 1994 year to 10.73% in 2001 year that based on current water level. and, water area increased from 0.30% in 994 year to 4.01% in 2001 year that based on full water level. Also, gumgang 3 subbasin that is lowest basin showed highest water area by 23.95% of whole land cover.
-
-
한국주요지점에 대한 확률강우량과 관측최대강우량의 확률분석
정만,이정규 한국수자원학회 1981 한국수자원학회논문집 Vol.14 No.3
우리나라의 주요 도시 서울, 부산, 대구, 광주의 지점강우량에 대하여 확률적인 방법과 M년 최대치법에 의하여 그 특성이 해석되었으며 일본의 해석결과와도 비교되었다. 본 연구에서 얻어진 결과는 다음과 같다. T년확률강우가 N년 동안에 발생하지 않은 확률은 관측치로부터 분석된 값과 비교하여 볼 때 이론치보다 작았으며 일본의 결과보다는 컸다. M년 10분 최대치가 N년 동안에 발생하지 않은 확률의 평균치는 이론치보다 컸으며 M년 1시간 최대치는 이론치보다 작 The characteristics of point rainfall for three different durations in Seoul Pusan Taegu and Gwangju have been analysed by the probabilistic ainfall method and the M-year maximum rainfall method. The probabilities that the T-year probabilistic rainfall di
-
정만 여수대학교 1990 論文集 Vol.4 No.-
The numerical analysis of two-dimensional hydrodynamic equations in the Yeo Su New Port was studied. The governing equations of the model consisted of the momentum equations and the continuity equation and they were analysed by the implicit finite difference method. For the numerical analysis, the computer program was made to get the velocity distribution and water surface elevation in the Yeo Su New Port. The Numerical Analysis results showed that the velocity distribution was with in the range of 7.0cm/sec and the currents was circular and there was residual currents and the elevation had a good agreement with the boserved data and circulation velocity was reduced but residual velocity was increased by the change of baundary condition in Yeo Su New Port.
연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
