Prediction of Vortex on Vertical Intakes by K-nearest Neighbor Modeling

Document Type : Original Article

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Abstract

Using vertical intakes is a common method of water withdrawal from rivers or storages to supply potable or agriculture water. Formation of vortex at vertical intakes is one of serious problems encountered in vertical intakes. Vortex formation reduces the efficiency of structure and causes loss of life. In this study, according to hydraulic conditions and geometry of vertical intakes, vortex formation was predicted by the K-nearest neighbor modeling for different ratios of channel length to width (L/W). The efficiency and precision of the model was evaluated by some statistical coefficients. Appropriate values of the correlation coefficient 0.912, the efficiency of model 0.827 and the root mean square error 0.105 shows this model is suitable and efficient.

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References

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