孔板消能系数理论分析和研究

Orifice energy dissipator is one of the energy dissipation methods used in hydraulic engineering. Although it is known that many factors may influence the efficient of the orifice energy dissipation, the mechanism of orifice energy dissipater is not fully understood yet.Theoretical analysis is conducted to investigate the influence of the factors. First, energy loss is investigated. Then, According to Π-theorem and the principle of dimensional homogeneity, the main factors are identified: Reynolds number, the diameter ratio and the distance between orifices. At last, the research actuality of the main factors that influence the efficient of the orifice energy dissipation are analyzed.