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Three-dimensional numerical model for open channel flow


Calculated and measured like the results were compared} Figure 3 (c) shows the calculated and measured points along the direction of flow of the vertical distribution of velocity. Can be seen from Figure 3, calculated and measured values are consistent. Former times to j c = j =:===:::: three 『II::: = b: b =: 1111111111 -5,, 111,111,111 + 111,111,111 :::::::::::= ii ,[link widoczny dla zalogowanych],:::: Lan Gao Lan Gao three thousand three hundred thirty-three three three -: Three Three a) flow diagram and surface shape Village (b) vent near Wing noodles u / U. . u / U. c) x direction velocity distribution curve along the depth and surface velocity distribution in Figure 3 the shape w. Flow rate of a city population; Uin an upstream inlet flow; B the width of a nozzle of a Jet grub lb 0 experimental values - calculated Fon fear ... [2: towel calculated Fig. A ~ 1 3Flowpatternandsurfaceshape Korea its, Wang Delu beat Long drainage flow type of numerical I2. Groove mobile groove flow is a common engineering flow. As an example, consider the rectangular open channel along the horizontal excavation of the bed 45 with it. Groove angle of intersection of the trapezoid shown in Figure 4. Obviously,[link widoczny dla zalogowanych], due to the presence of grooves,[link widoczny dla zalogowanych], so that the flow of the main channel in the horizontal deflection occurs,[link widoczny dla zalogowanych], there is cross-free surface slope, realistic simulation of the results of these flow characteristics. Figure 5 (b) and (c) is calculated and measured velocity profiles the law more consistent between the two. jI:: computational domain Figure 4 Fig. 4ComputatioRdomain difference Sharp {Bolt Bolt to three hundred thirty-three;; have the king - ': one to hi to stem from the amount of z + h point. / U · love feast of a meter measuring 5 slot Yi bamboo circle lies Amoy flow field and surface shape of Fig. 5FlowpatternartdsurfaceshapeoverthetrcRch IV Conclusion This open channel flow to the L and the three-dimensional numerical model not only maintains the Department of the classic advantages of SIMPLE method base,[link widoczny dla zalogowanych], and can accurately simulate the free surface shape, accurately handling the bed boundary conditions. Calculation shows that the model simulated changes in the larger complex free surface flow in open channels is fruitful.
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