This study predicts how the Free Surface Level (FSL) variations around finite length vegetation affect flow structure by using a numerical simulation. The volume of fluid (VOF) technique with Reynolds stress model (RSM) was used for Multizone Hexahedral meshing adopted to accurately track free surface level minimum diffusion at water–air interface. After validation, emergent patches were select...

The conventional liquids have some limitations regarding the thermal properties. The nanoparticles addition is one of the techniques which can modify them. In this research, heat transfer coefficient (h) and pressure loss (Δp) of various nanofluids containing Al2O3, SiO2 and MgO nanoparticles dispersed in water in an annular tube with constant wall temperature were numerically considered. Accor...

Abstract A three-dimensional numerical model based on the volume-of-fluid (VOF) method is typically preferred for studying high-current gas metal arc welding (GMAW) transfer mechanism and then controlling it. It informed that rotating spray extremely complicated, some researchers have focused simplified models without considering energy conservation to make analysis manageable unstable process....

The present work focuses on the study of slugs occurring in a two-phase flow confined rectangular channel: conditions appearance and effect behavior. Three-dimensional numerical simulations have been carried out to examine superficial air velocity Volume Of Fluid model (VOF) is used track air-water interface. Validation obtained by comparing results simulated axial with experimental data determ...

In this paper, the unsteady flow of two immiscible fluids with heat transfer is studied numerically with a modified cubic B-spine Differential Quadrature Method. Generalized Couette two immiscible dusty (fluid-particle suspension) and pure (Newtonian) are considered through rigid horizontal channels for three separate scenarios: first non-porous plates heat transfer, second porous uniform s...

The bridge ‘hydraulics analysis and design’ could be substantially enhanced using advanced commercial Computational Fluid Dynamics (CFD) software and powerful parallel computing resources. The objective of the present study is to validate STAR-CD commercial CFD software for the bridge hydraulics research. This study simulates limited scaled experimental data conducted elsewhere for bridge flood...

The vertical occipital fasciculus (VOF) is the only major fiber bundle connecting dorsolateral and ventrolateral visual cortex. Only a handful of studies have examined the anatomy of the VOF or its role in cognition in the living human brain. Here, we trace the contentious history of the VOF, beginning with its original discovery in monkey by Wernicke (1881) and in human by Obersteiner (1888), ...

Developing functional closure models for all the subgrid scale (SGS) physics in large eddy simulation (LES) of turbulent two-phase flows is yet a challenging task due to complicated turbulence-interface interactions. Our recent study (Saeedipour and Schneiderbauer, 2019) has revisited classical viscosity concept proposed new approach include surface tension into viscosity. It revealed an a-prio...

Abstract Siphon-shaft spillways can discharge large amounts of water down to the crest level in a narrow reservoir thanks siphonic pressures. However, cavitational pressures siphon-shaft limit operating head these spillways. An enlargement at shaft mouth reduce vacuum and velocities within flows, thereby removing risk cavitation occurring. In this study, four different enlarging profiles with v...

A rapidly growing bubble close to a free surface induces jetting: central jet protruding outwards and crown surrounding it at later stages. While the formation mechanism of is known documented, that remains unsettled. We perform axisymmetric simulations problem using software program basilisk, where finite-volume compressible solver has been implemented, uses geometric Volume-of-Fluid method (V...