@article{oai:soar-ir.repo.nii.ac.jp:00013135, author = {草間, 孝志}, journal = {信州大学工学部紀要}, month = {Jun}, note = {Sluice gates or tainter gates are widely used for the control of water. In this case, the discharge coefficient is perceived to be dependent upon the gate geometry (dimensions of the gate opening, upstream depths and the lip angle of the gate, especially for free efflux). But, the relationship among these factors seems to have been not clear enough. In this paper, the writer tried to obtain a simplified expression of the coefficient of contraction for the free efflux through the slot, using the free streamline theory. Furthermore, he modified the above expression by introducing the effects of gravitational force obtained by experimental researches., Article, 信州大学工学部紀要 11: 109-120 (1961)}, pages = {109--120}, title = {水門ならびにテンターゲートの自由流出に対する流量係数}, volume = {11}, year = {1961} }