防波堤 切開시 灣內의 水質變化 豫測

Prediction of water quality change by the breakwater incision in a harbor

The objective of this study, is interpretation of current flow pattern and pollutant dispersion by the breakwater incision in a harbor. The reliability of predictions from a pollutant dispersion model depend on how well the model approximates the field situation, the numerical model used here is a two-dimensional simple layer model(ADI). It is investigate the reproduction of phenomena for flow patterns and pollutant dispersion was confined through the comparison between the observed data at Wando Harbor. When the breakwater was cut by 100m at center part, current velocity was larger by max. 0.12m/sec and computation of COD was lower by 0.1㎎/ℓ~0.9㎎/ℓ than before breakwater incision. Resultly, we can expected water quality improvement approximate 33% because it is incised.