Research on hydraulic characteristic of siphon irrigation system of dock
Xueping Gao · Journal of Waterway and Harbor · 2009
Compared with the valve piping and the short covered way piping,the siphon piping has the advantages of simple structure,protection against sand and water and rapid set-off.The physical modeling experiment has been made according to the siphoning hydraulic characteristic of 5-ten-thousand-ton class building dock of Shandong Weihai.The time from evacuation to normal operation,the supreme negative pressure on the hump flow coefficient and flow regime of design plan were analyzed.Because the supreme negative pressure on the hump of the original plan exceeded the requirement in the standard and the fluid state was unsteady,the bodytype was modified by expanding the area of hump section and increasing rectification pillar.On this basis,the optimization scheme with reasonable negative pressure and irrigation time was proposed.