Research On The Application Of TS Waves In Open Channels

The TS wave theory mainly explains the process of changing the flow state after the water flow is disturbed.When the fluid passes through the solid wall,there are the phenomenon of laminar boundary layer,transition zone and turbulent boundary layer.The Reynolds number is used to discriminate the boundary layer fluid and increase it.Both the turbulent fluidity and the surface roughness of the object reduce the critical Reynolds number and cause the enthalpy to appear after casting.In the past,scholars' research on T-S waves rarely considered the influence of hydraulic boundary conditions on water flow.Therefore,this paper adopts the method of experimental research,changes the hydraulic boundary conditions,uses the drilling method,changes the hole shape,sets the hole on the raft,combines theory and experiment,observes,measures and analyzes the hydraulic characteristics of the water flow,and carries out the flow state of the water flow.Observing and distinguishing,studying the effect of hydraulic boundary on the hydraulic characteristics of water flow and the application of TS wave,the measured and comparative analysis data are:When there is no hole,the water flow line is straight.After the hole is formed,the water flow line changes,the water flow line becomes a curve,the flow path increases,and the contact area between the water flow and the water flow increases,the shear force increases,and the energy dissipation increases.The flow rate is reduced,and the flow rate when there is a hole is smaller than the flow rate when there is no hole.When there is no hole,the friction between the water flow and the bottom plate is dominant.After the hole is formed,the roughness coefficient is changed.The friction between the water flow and the bottom plate becomes shearing of the water flow and the water flow,and the contact area of the water flow and the hole increases,and the water flow and The contact area of the bottom plate is reduced,the friction is reduced,the turbulence is weakened,and the pulsation pressure is reduced.When there is no hole,the water flows into the flow channel,and the main flow is at a certain distance from the side wall.Under the action of the water inlet,a thin layer of water flow is formed near the side wall to make the boundary laminar flow movement,and the contact area between the bottom water flow and the bottom plate is large when there is no hole.,the roughness is large.After the hole is formed,the hydraulic inlet changes,the angle between the flow line and the side wall changes,the area of the boundary laminar flow decreases,the cross-sectional area of the water increases,and the contact between the water flow and the bottom plate becomes shearing of the water flow and the water flow.The roughness is reduced,the flow rate is increased,and the over current capability is increased.By changing any of these variables,the Reynolds number is reduced,the flow length is changed,the turbulence length is shortened,and the length of the transition zone is increased.The fitting curve shows the relationship between the water flow velocity and the pore size and pore depth.As the pore size increases,the flow velocity decreases,the pore depth increases,and the flow velocity decreases.The purpose of this paper is to use the drilling method to study the effect of hydraulic boundary conditions on water flow,improve or improve hydraulic characteristics,and study the changes of water flow characteristics.It is of great significance to further study the influence of hydraulic boundary conditions on T-S wave applications.