SUN Dong-po, LUO Qiu-shi, YAN Jun, WANG Er-ping, SONG Yong-jun. Analyze of the properties of the submerged triangle wing for adjusting shallow supercritical flow[J]. Advances in Water Science, 2007, 18(4): 509-515.
Citation: SUN Dong-po, LUO Qiu-shi, YAN Jun, WANG Er-ping, SONG Yong-jun. Analyze of the properties of the submerged triangle wing for adjusting shallow supercritical flow[J]. Advances in Water Science, 2007, 18(4): 509-515.

Analyze of the properties of the submerged triangle wing for adjusting shallow supercritical flow

  • The flow experiment of wide,shullow and steopflume in the paper indicates that the resistance loss of shallow supercritical flow in the steep channel is more than that of the general open flow.The author analyzes the flow momentum distribution in wide and steep channel,and finds that when the ratio B/h< 40 and the discharge is larger(hk> 1.04 m),the flow momentum lateral distribution at the end of steep channel presents a saddle profile which has stronger stability,but when the ratio B/h > 40 and the discharge is smaller (hk < 1.04 m),the momentum lateral distribution presents a elliptical profile which has weak stability and can't restrain the boundary disturbance Based on intervenient method,an new adjusting work is done through the submerged triangle wing.It can effect ively restrain the progressive minor disturbance,named Domino effect and get satisfied effect.The author further discusses the controlling mechanism and the main factors,and obtains some designable principle and the dimensionless geometric factor k of submerged triangle wing for engineering.
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