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안상진,김종섭,손형배 충북대학교 건설기술연구소 1990 建設技術論文集 Vol.8 No.2
The Galerkin's finite element method is applied for solving the 2-dimensional Navierstokes equation to study the flow phenomena in the open channel with sudden sectional variation. In this paper, the study of the sectional variated flow in open channel is analyzed numerically with variation of Reynolds number and expansion ratio. The computed results are similarly agree to the existing data. A recirculated region behind a sudden expansion in a open channel increase with Reynolds number. The maximum reattachment length increases with Reynolds number, but critical expansion ratio(e_(cr)) is sligtly decrease. It was found that reattachment length reach a maximum value when a reach a critical values e_(cr), for a fixed Re, decrease when a is larger than e_(cr), and then decreases when e is smaller than e_(cr).
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박용범,조용찬,손형배 한국스포츠리서치 2004 한국 스포츠 리서치 Vol.15 No.5
The purpose of this study is that we present the effective management strategy which a manager of fencing school should have and also offer basic materials for customers satisfaction in using the fencing school for establishing the reasonable management strategy of fencing schools. For reaching our purpose we examined and compared facilities, leaders, programs in fencing schools. We used t-test in order to investigate how many people visit the fencing school and what kind of people use the fencing school. Most of all, the manager of fencing school should have lots of female users for the reasonable management of fencing school. For this managers should get good leaders with which they could be satisfied. It is the most important factor of whole management of fencing school. And they should also increase suitable facilities and provide comfortable, delightful and cheerful surroundings.
안상진,김종섭,유병로,손형배 충북대학교 건설기술연구소 1988 建設技術論文集 Vol.7 No.1
A two-dimensional hydrodynamic model is presented which models the free-surface flow on watersheds by finite difference method. This model is formulated by a hydrodynamic system represented by quasilinear partial differential equation for two flow-velocity components and a flow depth at any point on the watershed. A results of example application, modeling, circumstances of this model is presented.