In this study, the spatial and temporal variability of water quality including monthly series of TDS, EC, So4, Cl, Ca and Na in common statistical period 1993-2014 was evaluated for the Karun River. This assessment is based on qualitative data stations including Susan in the upstream of Gotvand reservoir, Gotvand, Mollasani and Ahvaz in the downstream. To determine the parameters trend process,...

The diversity of the landslide dam structure will result in difference body’s seepage. In this paper, based on two kinds soil bodies different particle gradations, fourteen groups structures are designed to generalize seepage developments and breaking processes. study shows that saturation evolution characteristics dam's have a considerable influence dam’s characteristics. An empirical formula ...

Volume Of Fluid (VOF) is one of the most powerful methods to resolve free surface ows. In this study, a new algorithm is developed in a curvilinear coordinate system, which implements an implicit pressure based method (SIMPLE) with a staggered grid and a Lagrangian propagation of the interface, using the VOF method in the computational domain. Based on this algorithm, a computer code is generat...

We present here a proof-of-concept of a novel, efficient method for modeling of liquid/gas interface dynamics. Our approach consists in coupling the lattice Boltzmann gas (LBG) and the level set (LS) methods. The inherent parallel character of LBG accelerated by level sets is the principal advantage of our approach over similar particle based solvers. Consequently, this property allows for effi...

The paper describes the development of the efficient interface sharpening procedure for viscous incompressible flows governed by the Navier–Stokes equations. The moving interface has been captured by a pseudo-concentration method. The solution domain has been discretised by the space-time finite elements, while numerical schemes have been stabilised by the Galerkin least squares method. The dam...

The regulatory mechanisms underlying bud breaking (scale leaf elongation) and flowering in the lateral flower buds of Japanese pear (Pyrus pyrifolia Nakai 'Kosui') are unknown. To more fully characterize these processes, we treated pear trees with different amounts of chilling initiated at different times. Chilling for ∼900 h at 6 °C always induced bud breaking (scale elongation in ≥70% lateral...

In this paper, we present extensions, extensive validations and applications of our previously published hybrid volume-of-fluid-based (VOF)model for the simulation of freesurface flow problems. For the solution of the flow field, the lattice Boltzmann method is used, where the free surface is represented by a VOF approach. The advection equation for the VOF fill level is discretized with a fini...

Dams are one of the most important hydraulic structures. In view unrecoverable damages occurring after a dam failure, analyzing dams’ break is necessary. this study, located in Iran considered. According to adjacent tourist and entertainment zones, breaking could lead severe problems for area bridges downstream river. To investigate issue, numerical FORTRAN code based on 2D finite volume Roe-TV...