Prediction of Flow Depth of Hydraulic Jump Using Tail Gate in Open Channel

Hydraulic jump is one of the widely used phenomena in open channel flows. Yet a very limited study has been done on hydraulic jump and effects of tail gate. Recognizing the importance of flow depths in hydraulic jump analysis, the objective is to develop predictive equations based on the known tail gate opening (TGO), as the direct measurement of flow depth in the channel is not always feasible. Present study proposes theoretical as well as dimensional analysis model for predicting downstream flow depth of hydraulic jump using TGO. The models are developed for a specific range of experiments and are validated with additional experiments for extended range. The performance of both the models is evaluated using the statistical indices R², MAPE, and RMSE. The results indicate that both the theoretical and dimensional analysis models predict the flow depth of hydraulic jump precisely, offering a reliable and efficient alternative to direct flow depth measurements.