Title: Investigation of numerical simulation of non-Newtonian flows dam break and dam breach in open channels using modified VOF method
Authors: Esmail Lakzian; Ayda Estiri; Mostafa Niazi
Addresses: Department of Mechanical Engineering, Hakim Sabzevari University, Iran; Department of Mechanical and Energy Engineering, Shahid Beheshti University, Tehran, Iran ' Department of Mechanical Engineering, Hakim Sabzevari University, Iran ' Department of Mechanical Engineering, Hakim Sabzevari University, Iran
Abstract: This paper concerns modelling dam break flows of non-Newtonian Herschel-Bulkley (HB) fluid by using the volume of fluid (VOF) method and high resolution advection schemes. The VOF method is based on the fact that two or more fluids (or phases) are not interpenetrating. In the present study, a modified approach is used to overcome this problem. The OpenFoam software is employed and inter-Foam solver is used in two and three-dimensional model with non-Newtonian fluid. The numerical results of the present study are compared with analytical, numerical and experimental results found in literature. The numerical code which is used showed better agreement with the experimental data than those using shallow water equations and PLIC method.
Keywords: Herschel-Bulkley; volume of fluid; VOF; dam break flows; non-Newtonian model.
Progress in Computational Fluid Dynamics, An International Journal, 2019 Vol.19 No.4, pp.220 - 234
Accepted: 13 Nov 2017
Published online: 19 Jul 2019 *