调压室底部阻力系数的试验研究

调压室底部阻力系数的确定是影响调压室水力计算精度的重要因素.目前这方面的资料甚缺.因此调压室底部阻力系数的试验研究是一项急待进行的工作.这是一种基础试验,其成果将能够长期服务于生产.本文作者对于T形及T形加扩大断面的分岔进行了详细的不同分流情况的试验.前者相当于双室式和差动式调压室的情况,其成果对已有的资料起到了检验和修正的作用;后者相当于具有连管的调压室,其成果填补了这方面的空白,为此类调压室的水力计算提供了依据,试验成果以曲线和公式两种形式示出.前者较形象,后者特别适用于用计算机求解调压室水位波动问题.

Minor Head Loss Factors at Bottoms of Surge Tanks

The empirical formulas and curves of minor hydraulic head loss factors for the flow entering and passing through the bottoms of some kinds of surge tanks are given in this paper. They are established on the basis of a large amount of experimental data and can meet the needs of reliability and accuracy in engineering practice. These formulas and curves furnish the basis for some surge tank oscillation calculations , which were difficult to be solved because of lacking suitable minor loss factors to be used in the past.