Effects of the Number of Inlet and Outlet Ports and Trapezoidal Channel Teeth on Anti-clogging Performance of a Single-wing Labyrinth Drip Irrigation Belt

【Objective】 This paper is to study the effects of the number of water inlets, the number of teeth of the trapezoidal flow channel and the number of outlets on the anti-clogging performance of the single-wing labyrinth drip irrigation belt. We designed nine groups of working conditions for numerical simulation. 【Method】 Physical experiments, numerical simulations, linear mathematical models were used to study water and sand flow in a single-wing labyrinth drip irrigation belt when the flow rate was 1.8 L/h, as well as the influence of different inlet and outlet numbers and trapezoidal flow channel teeth on the flow index and flow coefficient of the drip irrigation belt. 【Result】 The SST k-ω two-equation for low Reynolds number turbulence model is more suitable for numerical simulation of flow field in the single-wing labyrinth drip irrigation belt. From the inlet to the trapezoidal channel and then to the outlet, the mass concentration of sediment particles gradually decreases; the fifth water inlet of drip ir