NUMERICAL SIMULATION AND A MATHEMATICAL MODEL OF PRESSURE LOSSES DEPENDING ON GEOMETRIC PARAMETERS OF DRIP EMITTER LABYRINTH CHANNEL

作者：Philipova Nina^*; Nikolov Nikola; Pichurov Georgi; Markov Detelin

来源：Comptes Rendus de l Academie Bulgare des Sciences, 2009, 62(7): 891-898.

• drip irrigation
• emitter
• labyrinth channel
• pressure losses
• mathematical model

The influence of the geometric parameters of emitter labyrinth channel on its hydraulic parameters is investigated in this work. Among the geometric parameters, the influence of the dentation angle, the dentation spacing, the dentation height on the pressure losses is examined. Numerical simulations of water flow movement are performed according to the cubic central composition design by using programmes GAMBIT and FLUENT. As a. result, a, mathematical model of pressure losses is derived depending on the above mentioned geometric parameters. Most important influence on the pressure losses has the increase of the dentation spacing B, followed in times lower by this of the angle theta, and finally the high H has the smallest influence.

• 出版日期2009