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우리 민족의 얼이요, 혼인 쌀시장마저도 빗장을 풀어야 하고 쇠고기, 고추, 마늘, 양파, 참깨, 감귤, 우유 및 유제품등 나머지 14개 비교역적 기능(NTC)품목도 모두 개방해야 한다.

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Recently, rudder erosion due to cavitation frequently has occurred at large high speed container carriers. Especially, in the case of a horn-type rudder, the rudder erosion is severe around a gap. The gap-flow characteristics are investigated through a computational method to understand the effects of a gap on the cavitation and rudder efficiency. A viscous flow theory utilizing a cavitation model is applied to calculate the flow around idealized 2-dimensional rudder sections in a full scale. The effects of gap clearance and flow-control projection are also investigated. From the computational results, the mass flow rate through a gap is found to be one of the important parameters to affect the cavitation and rudder efficiency.