STUDY AND ITS APPLICATIONS OF 1D AND 2D FLOW MATHEMATICAL MODELS FOR TGP'S 3<sup>rd</sup>-STAGE OPEN CHANNEL CLOSURE

Xia, Junqiang; Wang, Guangqian; Hougui, Zhou

doi:10.1142/9789812702838_0019

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“…Seen from the observations and relevant outcomes of it (Zhou, 2007), though there was large flow, long embankment and short dike spacing, both two dikes shared total drop successfully in reality. The 2-D horizontal numerical dynamic modeling research for it revealed that two large inverse return flow formed between the two dikes under the specific terrain and dike allocation (Xia et al, 2005). It may be speculated that the beneficial hydraulic conditions for double dike closure would be connected with the plane flow pattern.…”

Section: Introductionmentioning

confidence: 99%

On planar flow and its influences in double dike closure by numerical simulation

Yin¹,

Yuan-ji

2011

2011 International Conference on Multimedia Technology

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Double dikes can be used to reduce the difficulties in river closure under high flow and big drop. It is required that both dikes share water fall during the closing process. But in practice it was often not easy to control the hydraulic conditions to obtain satisfactory situation. A series of 3-D numerical experiments by CFD simulation on two-dike closure in simplified straight boundaries were conducted in this paper. The results demonstrated that two recirculation zones in reverse direction in the flow plane, which were formed due to main stream diversion between the dikes, were necessary to drop sharing of the downstream embankment. The diverting spur wall had been found through computational tests to contribute to this kind of stable flow pattern. The location and size of the wall could influence formation and stability of the pattern. The distance between two dikes had a minimum value for maintaining the recirculation but had less influences on total drop and its allocation on the two embankments in the presence of the two stable return flow. Keywords-double dike closure; plane flow pattern; numerical simulation; drop sharingI.

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Section: Introductionmentioning

confidence: 99%

On planar flow and its influences in double dike closure by numerical simulation

Yin¹,

Yuan-ji

2011

2011 International Conference on Multimedia Technology

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STUDY AND ITS APPLICATIONS OF 1D AND 2D FLOW MATHEMATICAL MODELS FOR TGP'S 3^rd-STAGE OPEN CHANNEL CLOSURE

Cited by 1 publication

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On planar flow and its influences in double dike closure by numerical simulation

On planar flow and its influences in double dike closure by numerical simulation

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STUDY AND ITS APPLICATIONS OF 1D AND 2D FLOW MATHEMATICAL MODELS FOR TGP'S 3rd-STAGE OPEN CHANNEL CLOSURE

Cited by 1 publication

References 0 publications

On planar flow and its influences in double dike closure by numerical simulation

On planar flow and its influences in double dike closure by numerical simulation

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STUDY AND ITS APPLICATIONS OF 1D AND 2D FLOW MATHEMATICAL MODELS FOR TGP'S 3^rd-STAGE OPEN CHANNEL CLOSURE