Location of the Confluence of Rapid Shock Waves and Regularity of Water Tongue Diffusion of Slit-Type Energy Dissipator
By changing the inflow Froude number Fr and the contraction ratio β of narrow slit in model experiments,we researched the confluence location of rapid shock waves and the diffusion regularity of flow out of the slit-bucket.Results show that:β has larger influence on the confluence location of rapid shock waves than Fr does; the largerβ is,the closer the confluence location is to the flip bucket outlet.After the shock waves meet,the surface water in the bucket starts to shoot,and the outflow angle reduces correspondingly asβ increases.When β =0.2 ～0.25,the distance of confluence location from the outlet accounts for 30％-40％ of the total length of the flip bucket,in which case the water tongue diffusion is more sufficient and stable.The research results enriched the understanding of hydraulic characteristics in slit-type bucket,and provide a theoretical basis for relative design.
slit-type energy dissipatorrapid shock wavecontraction ratioFroude numberjet trajectory length
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