이상강우에 대비한 성주댐의 홍수조절 능력 분석

권순국,한건연,서승덕,최혁준 한국농공학회 2003 한국농공학회논문집 Vol.45 No.6

As a fundamental research to establish a safety operation plan for irrigation dams, this study presents hydrologic analysis conducted in Sungju Dam watershed based on various rainfall data. Especially those reservoirs without flood control feature are widely exposed to the risk of flooding, a safe and optimized operation program need to be improved against arbitrary flooding. In this study, reservoir routing program was developed and simulated for reservoir runoff estimation using WMS hydrology model. The model simulated the variations of reservoir elevation under the condition of open or closed emergency gate. In case of closed emergency gate, water surface elevation was given as 193.15 m, and this value exceeds the dam crest height by 1.65 m. When the emergency gate is open, the increment of water surface elevation is given as 192.07 m, and this value exceeds dam crest height by 0.57 m. As an alternative plan, dam height increase can be considered for flood control under the PMP (Probable Maximum Precipitation) condition. Since the dam size is relatively small compare to the watershed area, sound protection can be expected from the latter option rather than emergency gate installation.

미국 농공학회 설계기준(I) (농지조성분야)

권순국 한국농공학회 1984 한국농공학회논문집 Vol.26 No.1

유럽형 APR1400 해체고려설계를 위한 체크리스트 개발

권순국,나장환,이근성 한국에너지학회 2012 한국에너지공학회 학술발표회 Vol.2012 No.10

흡수성 Biofilter 를 이용한 농촌 소규모 오수처리 시설의 성능

권순국,윤춘경 한국환경농학회 1999 한국환경농학회지 Vol.18 No.4

The feasibility of an absorbent biofilter system was examined for rural wastewater treatment. Hydraulic loading rates varied from 50 to 250 ㎝/day. Effluent of the septic tank was fed into the absorbent biofilter, and small ventilation fan was provided to supply air at the rate of 250 L/min to aerate the biofilter. The biofilter system demonstrated high removal rates for BOD_5 and TSS at the loading rate of 150 ㎝/day, generally meeting the Korean effluent water quality standard of 20 ㎎/L applicable to both. The nutrient removal was less satisfactory than the results of BOD_5 and TSS, but it was within the expected range of biological treatment processes. Considering the abnormally high influent concentration of nutrients during the experiment, better performance results could have been obtained if ordinary domestic wastewater was used. The system performance was not significantly affected by the hydraulic loading up to 150 ㎝/day, which is far more than the loading limit of the sand filter systems. Maintenance requirement was minimal, and no problems with noise, odor, flies or sludge arose. Since the biofilter system can be operated at a distance, operation in remote rural area and multi-system connected to one control office might be advantageous to the rural area. Overall, considering the cost-effectiveness, stable performance, and minimum maintenance, the biofilter system was thought to be a competitive alternative to treat wastewater in Korean rural communities.

통일 대비 북한 농업생산기반시설 확충방안 - 경제성 분석을 중심으로 -

권순국,김관수,이정재,이제명,박창근,Kwun, Soon-Kuk,Kim, Kwan-Soo,Lee, Jeong-Jae,Lee, Je-Myung,Park, Chang-Keun 한국농공학회 2006 한국농공학회논문집 Vol.48 No.6

We propose an Agricultural Infrastructure Expansion Plan (AIEP) for North Korea following unification from the standpoint of a united Korea's social stability. We predict the food demand after unification, according to four different development scenarios based on the AIEP. These scenarios include meeting a self-sufficient level in the staple food crop, satisfying long-term food supply and demand for the North Korean people, achieving a level of North Korean food consumption comparable to that of South Korea, and maintaining productivity to stabilize of North Korea's rural society. We present the results of a 'benefit-cost' analysis in meeting the production targets of predicted food demands after unification from a civil engineering perspective. We found that the estimated total costs would range from 15.2 to 43.0 billion dollars depending on the particular AIEP scenario. In our analysis, all of the four scenarios presented above demonstrated a high degree of economic validity. We conclude that the AIEP is a necessary and economically valid project for a united Korea's future because it would forestall the collapse of North Korea's rural communities, thereby preventing tremendous economic losses upon unification.

스마트 원자로냉각재펌프의 축소모형에 대한 수력성능 예측

권순국(Sun Guk Kwon),박진석(Jin Seok Park),유제용(Je Yong Yu),이원재(Won Jae Lee) 대한기계학회 2010 大韓機械學會論文集A Vol.34 No.8

본 연구에서는 SMART 원자로의 사류형 원자로냉각재펌프의 축소모형에 대한 수력성능을 예측하기 위하여 설계점을 포함한 다양한 탈설계점에서의 해석을 수행하였다. 계산시간의 효율성을 위하여 임펠러와 디퓨저 각 1개 유로로 이루어진 계산영역을 해석대상으로 선정하였다. 임펠러와 디퓨저간의 정보교환을 위하여 스테이지 기법을 사용하였다. 정상상태 비압축성 유동조건에서 축소모형의 수력성능특성을 파악하기 위하여 해석영역의 입구와 출구에서 압력차를 측정하여 양정, 효율과 축동력을 산출하였다. 수력성능 곡선은 일반적인 사류펌프의 성능특성을 잘 모사하는 것으로 나타났다. 저유량에서의 펌프 내부유동의 복잡한 흐름을 확인하였다. An analysis was conducted to predict the hydraulic performance of a reactor coolant pump (RCP) of SMART at the off-design as well as design points. In order to reduce the analysis time efficiently, a single passage containing an impeller and a diffuser was considered as the computational domain. A stage scheme was used to perform a circumferential averaging of the flux on the impeller-diffuser interface. The pressure difference between the inlet and outlet of the pump was determined and was used to compute the head, efficiency, and break horse power (BHP) of a scaled-down model under conditions of steady-state incompressible flow. The predicted curves of the hydraulic performance of an RCP were similar to the typical characteristic curves of a conventional mixed-flow pump. The complex internal fluid flow of a pump, including the internal recirculation loss due to reverse flow, was observed at a low flow rate.

산지(山地) 소유역(小流域)의 홍수유출(洪水流出) 예측(豫測)을 위한 모의발생(模擬發生) 수문모형(水文模型)의 개발(開發)

권순국 ( Kwun Soon Kuk ),고덕구 ( Koh Deuk Koo ) 한국농공학회 1988 韓國農工學會誌 : 전원과 자원 Vol.30 No.3

Most of the Korean watersheds are mountaineous and consist of various soil types and land uses And seldom watersheds are found to have long term hydrologic records. The SNUA, a hydrologic watershed model was developed to meet the unique characteristics of Korean watershed and simulate the storm hydrographs from a small mountaineous watershed. Also the applicability of the model was tested by comparing the simulated storm hydrographs and the observed from Dochuk watershed, Gwangjugun, Kyunggido. The conclusions obtained in this study could be summarized as follows ; 1. The model includes the simulation of interception, evaporation and infiltration for land surface hydrologic cycle on the single storm basis and the flow routing features for both overland and channel systems. 2. Net rainfall is estimated from the continuous computation of water balance at the surface of interception storage accounting for the rainfall intensities and the evaporation losses at each time step. 3. Excess rainfall is calculated by the abstraction of infiltration loss estimated by the Green and Ainpt Model from the net rainfall. 4. A momentum equation in the form of kinematic wave representation is solved by the finite differential method to obtain the runoff rate at the exit of the watershed. 5. The developed SNUA Model is a type of distributed and event model that considers the spatial distribution of the watershed parameters and simulates the hydrograph on a single storm basis. 6. The results of verification test show that the simulated peak flows agree with the observed in the occurence time but have relative enors in the range of 5.4-40.6% in various flow rates and also show that the simulated total runoff have 6.9-32% of relative errors against the observed. 7. To improve the applicability of the model, it was thought that more studies like the application test to the other watersheds of various types or the addition of the other hydrologk components describing subsurface storages are needed.

APR1400 고온관 파단시 이물질 막힘조건을 고려한 압력손실계수 변화에 따른 첨두피복재온도 민감도 분석

권순국,김재원,서정관 한국에너지학회 2015 한국에너지공학회 학술발표회 Vol.2015 No.11

글로벌 가치사슬 시대 수출중소기업의 한ㆍ중 FTA 활용방안에 관한 연구

권순국 한국무역금융보험학회(구 한국무역보험학회) 2015 무역보험연구 Vol.16 No.3

2015년 6월 1일 정식 서명된 한ㆍ중 FTA는 국내 농수축산 분야의 보호와 개성공단에서 생산된 제품의 특혜관세 인정이라는 성과 달성과 더불어 미국, EU에 이어 세계 3대 경제권 중 하나이자 거대 소비시장인 중국에 한국 중소기업의 진출 확대를 마련할 수 있는 계기가 되었다. 본 연구는 글로벌 가치사슬 시대 수출중소기업의 한ㆍ중 FTA 활용방안을 살펴보았으며, 이를 바탕으로 다음과 같은 시사점을 제시하고자 한다. 먼저 한중간 글로벌 가치사슬 확대와 한국과 중국 양국이 기체결한 FTA 네트워크를 적극 활용하여야 하며, 한국의 기발효 FTA에 비해 양허 품목수와 범위가 확대된 역외가공지역(개성공단)을 적극 활용하여야 한다. 그리고 한ㆍ중 FTA 원산지 결정기준의 특성을 잘 파악하여 이에 따른 기업의 대응전략이 필요하며, 한중 세관 당국간 구축 예정인 FTA 원산지자료 교환시스템과 특화 FTA-PASS 등과 같은 인프라를 활용할 필요가 있다. 마지막으로 아시아ㆍ태평양 지역에서 논의되고 있는 RCEP, FTAAP와 같은 다자간(Maga) FTA를 적극적으로 활용하여야 한다. The Korea․China FTA was officially signed on June 1 2015. It includes some concessions regarding major export items in the manufacturing sector for the protection of primary industries and preferential tariffs for a number of products produced in the Kaesong Industrial Complex. At the firm level there can be notable benefits of joining global value chains(GVCs) and using FTA preferences. Regionalism in Asia, led by GVCs and FTA, has increasingly put the spotlight on small and medium-sized enterprises. The FTA networking in East Asia could be a predecessor of the new wave of regionalism with new development strategies. The purpose of this study is to examine the utilization of the Korea․China FTA of SMEs in the era of global value chains. Results of the study show that several implications based on the utilizing strategies are offered. The Korean companies and government need to do the following: expand of GVCs between Korea and China, utilize of FTA networking in Korea and China, utilize of outward processing zone(Kaesong Industrial Complex), utilize of FTA origin criteria, utilize of FTA infrastructure(FTA-PASS), and utilize of Mega FTAs such as the RCEP(Regional Comprehensive Economic Partnership) and the FTAAP(Free Trade Area of the Asia Pacific).

한국 근대농업 100년과 함께 한 토지개량사업

권순국,Gwon, Sun-Guk 한국관개배수위원회 2006 한국관개배수논문집 Vol.13 No.2