Prediction of velocity-dip-position over entire cross section of open channel flows using entropy theory

2017 ◽  
Vol 76 (10) ◽  
Author(s):  
Snehasis Kundu
Keyword(s):  
Cross Section ◽  
Open Channel ◽  
Channel Flows ◽  
Entropy Theory ◽  
Open Channel Flows ◽  
Entire Cross Section

scholarly journals A lattice Boltzmann model for the open channel flows described by the Saint-Venant equations

2019 ◽  
Vol 6 (11) ◽  
pp. 190439
Author(s):  
Zhonghua Yang ◽  
Fengpeng Bai ◽  
Ke Xiang
Keyword(s):  
Steady Flow ◽  
Cross Section ◽  
Lattice Boltzmann ◽  
Open Channel ◽  
Complex Geometry ◽  
Rectangular Cross Section ◽  
Channel Flows ◽  
Lattice Boltzmann Model ◽  
Open Channel Flows ◽  
Saint Venant Equations

A new lattice Boltzmann method to simulate open channel flows with complex geometry described by a conservative form of Saint-Venant equations is developed. The Saint-Venant equations include an original treatment of the momentum equation source term. Concrete hydrostatic pressure thrust expressions are provided for rectangular, trapezoidal and irregular cross-section shapes. A D1Q3 lattice arrangement is adopted. External forces, such as bed friction and the static term, are discretized with a centred scheme. Bounce back and imposed boundary conditions are considered. To verify the proposed model, four cases are carried out: tidal flow over a regular bed in a rectangular cross-section, steady flow in a channel with horizontal and vertical contractions, steady flow over a bump in a trapezoidal channel and steady flow in a non-prismatic channel with friction. Results indicate that the proposed scheme is simple and can provide accurate predictions for open channel flows.

scholarly journals An experimental study on open channel flows with moderate adverse pressure gradients

1995 ◽  
Vol 39 ◽  
pp. 391-396
Author(s):  
Kouki ONITSUKA ◽  
Masaru URA ◽  
Juichiro AKIYAMA ◽  
Sadakatsu MATSUOKA
Keyword(s):  
Experimental Study ◽  
Open Channel ◽  
Channel Flows ◽  
Pressure Gradients ◽  
Open Channel Flows
Sign in / Sign up

Export Citation Format

Share Document