A comparison of standard k–ε and realizable k–ε turbulence models in curved and confluent channels

R Shaheed, A Mohammadian… - Environmental Fluid …, 2019 - Springer
Bends and confluences are often observed in rivers, and one of the phenomena that
characterize flows in open channel bends and confluences is secondary current. Instead of …

Experimental and computational determination of heat transfer, entropy generation and pressure drop under turbulent flow in a tube with fly ash-Cu hybrid nanofluid

PK Kanti, KV Sharma, AA Minea, V Kesti - International Journal of Thermal …, 2021 - Elsevier
The purpose of this research is to study the forced convection heat transfer and flow
characteristics of water base fly ash-Cu (80: 20% by volume) hybrid nanofluid (HNF) flow …

Prandtl's secondary flows of the second kind. Problems of description, prediction, and simulation

NV Nikitin, NV Popelenskaya, A Stroh - Fluid Dynamics, 2021 - Springer
The occurrence of turbulent pulsations in straight pipes of noncircular cross-section leads to
the situation, when the average velocity field includes not only the longitudinal component …

Numerical investigation of the effects of gas-liquid ratio on the spray characteristics of liquid-centered swirl coaxial injectors

W Chu, X Li, Y Tong, Y Ren - Acta Astronautica, 2020 - Elsevier
We investigate the effects of gas-liquid ratio (GLR) on the spray and atomization process of a
liquid-centered swirl coaxial injector using the coupled level-set and volume of fluid …

Numerical study on the thermo-hydraulic performance analysis of fly ash nanofluid

P Kanti, KV Sharma, Z Said, E Bellos - Journal of Thermal Analysis and …, 2022 - Springer
The heat transfer and flow characteristics of water-based fly ash nanofluid for concentrations
of 0.1–1.5 vol.% that flow through a copper tube at an inlet fluid temperature of 303 K with …

Experimental and numerical study of flow over a broad-crested weir under different hydraulic head ratios

H Imanian, A Mohammadian, P Hoshyar - Flow measurement and …, 2021 - Elsevier
Herein, the free surface flow over a broad-crested weir under different hydraulic heads was
investigated. A series of experiments were conducted in a 5-m-long-flume to measure the …

Experimental and numerical study on impact of double layer vegetation in open channel flows

HR Rahimi, X Tang, P Singh - Journal of Hydrologic Engineering, 2020 - ascelibrary.org
This paper studies the effects of different types and configurations of double layer vegetation
on the flow of open channels. The vegetation is simulated through cylindrical dowels with a …

Experimental study of cavitation index in an ogee spillway by considering convergence angle of sidewalls

A Foroudi, R Barati - Water Supply, 2022 - iwaponline.com
Cavitation is among the most complex and common damage occurring in spillway
structures, which is one of the most expensive parts of a dam. The cavitation index, as the …

Turbulence modelling for depth-averaged velocity and boundary shear stress of a dense rigid grass bed open channel

S Sahoo, JR Khuntia, K Devi… - AQUA—Water …, 2023 - iwaponline.com
The present research focusses on a comparison of experimental and numerical approaches
for flow over fixed artificial rigid grass bed channels. Various flow parameters like …

Multi-physics simulation of an insect with flap** wings

K Bakhshaei, H MoradiMaryamnegari… - Proceedings of the …, 2021 - journals.sagepub.com
In this paper, the unsteady aerodynamic of an insect's forward flight has been carried out
with a novel approach. In order to fully utilize the available powerful solvers, an innovative …