Arzu YAZGI, Hüseyin YÜRDEM, Vedat DEMİR, Tuncay GÜNHAN

Determination of the Hydraulic Properties of a Flat Type Drip Emitter using Computational Fluid Dynamics

ABSTRACTThe objective of this study was to determine the hydraulicproperties of a flat type emitter using Computational FluidDynamics with different turbulence models and model options.In addition, it is aimed to investigate the effects of the emitterhydraulic properties on the design when the same emitter isused in drip irrigation pipes with different wall thicknesses. Thelowest mean percentage deviation between the measured flowrates and the calculated flow rates with turbulence models wasfound as 0.70% and 0.74% in the SST k- and Stress-OmegaRSM turbulence model for the wall thickness of 0.25 mm pipe,respectively. Also, the mean percentage deviation for thelaminar turbulence model was found to be -1.01%. Theminimum MAE (0.021 L h-1) and RMSE (0.028 L h-1) valueswere found in the SST k- low-Re corr. turbulence model andthe minimum MAPE (1.068%) was found in the laminarturbulence model.

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