Browsing School of Aerospace, Mechanical and Mechatronic Engineering by subject "0915 Interdisciplinary Engineering"
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Characterising entrainment in fountains and negatively buoyant jets
Published 2022Turbulent fountain flow consists of two distinct stages, the initial ‘negatively buoyant jet’ (NBJ) stage, and the fully developed ‘fountain’ stage. The present study investigates both stages of the flow using particle ...Open AccessArticle -
Characteristics of unsteadiness for transitional plane fountains in linearly stratified fluids
Published 2019When a fountain is injected into a linearly stratified fluid, its behavior will be governed by the stratification of the ambient fluid, represented by the dimensionless temperature stratification parameter (s), in addition ...Open AccessArticle -
Correlations for maximum penetration heights of transitional plane fountains in linearly stratified fluids
Published 2016In this study, a series of three-dimensional direct numerical simulations (DNS) were carried out using ANSYS Fluent for transitional plane fountains in linearly stratified fluids with the Reynolds number (Re), Froude number ...Open AccessArticle -
Destratification of thermally stratified turbulent open-channel flow by surface cooling
Published 2020Destratification of thermally stratified open-channel flow by surface cooling is investigated using direct numerical simulation. The initial states are the equilibrium states resulting from radiative heating. Using these ...Open AccessArticle -
Direct numerical simulation and large eddy simulation of wind shear effects on non-stratified open channel flow
Published 2018In this study, direct numerical simulation (DNS) and large eddy simulation (LES) of turbulent channel flow beneath a flat surface with imposed wind shear stress are presented. An open channel with friction Reynolds number ...Open AccessConference paper -
Entrainment across a sheared density interface in a cavity flow
Published 2018The entrainment of fluid across a sheared density interface has been examined experimentally in a purging cavity flow. In this flow, a long straight cavity with sloped entry and exit boundaries is located in the base of a ...Open AccessArticle -
Entrainment and structure of negatively buoyant jets
Published 2021Turbulent negatively buoyant jets occur when the buoyancy of a jet directly opposes its momentum, and will decelerate until its mean momentum is reduced to zero. Here, the flow reverses direction and, for an axisymmetric ...Open AccessArticle -
Entrainment and structure of negatively buoyant jets
Published 2021Turbulent negatively buoyant jets occur when the buoyancy of a jet directly opposes its momentum, and will decelerate until its mean momentum is reduced to zero. Here the flow reverses direction and, for an axisymmetric ...Open AccessArticle -
Entrainment in Pulsing Plumes
Published 2019Turbulent axisymmetric lazy plumes produced by discharging saline fluid downwards into a less dense uniform environment from a round pipe are exam- ined experimentally. The plumes development is con- trolled by the source ...Open AccessArticle -
Evolution of thermally stratified turbulent open channel flow after removal of the heat source
Published 2019Evolution of thermally stratified open channel flow after removal of a volumetric heat source is investigated using direct numerical simulation. The heat source models radiative heating from above and varies with height ...Open AccessArticle -
Experimental investigation into turbulent negatively buoyant jets using combined PIV and PLIF measurements
Published 2020Turbulent negatively buoyant jets occur when the buoyancy of a jet opposes its source momentum. In these flows, the fluid will rise until it reaches a stagnation point and a return flow is established, forming a fountain ...Open AccessArticle -
The influence of sharp meanders on thermally stratified open channel flow
Published 2020In this study, direct numerical simulation (DNS) results for turbulent stratified open channel flow through an idealized meander with an internal heat source that models radiative heating from above are used to investigate ...Open AccessConference paper -
Interaction behavior of triple transitional round fountains in a homogeneous fluid
Published 2016In this study, the PIV and flow visualization techniques and three-dimensional di- rect numerical simulation are used to investigate the behavior of triple transitional round fountains, which are aligned along a straight ...Open AccessArticle -
Numerical Simulation for Entrainment of Forced Turbulent Fountains
Published 2019Numerical simulations are used to investigate the entrainment for forced turbulent fountains over a range of Reynolds numbers, 2000 ≤ Re ≤ 3500, and Froude numbers, 5 ≤ Fr ≤ 24, where Re and Fr are based on the fountain ...Open AccessConference paper -
Pairwise comparison locomotion scoring dataset for dairy cattle
Published 2020-10-22Lameness in dairy cattle is conventionally assessed through subjective, and often inconsistent visual scores of locomotion. Our work presents a pairwise comparison method to assess locomotion in cattle to reduce these ...Open AccessDataset -
Rectangular lattice Boltzmann method using multiple relaxation time collision operator in two and three dimensions
Published 2020We present a lattice Boltzmann (LB) method using a rectangular, non-isotropic lattice based on D2Q9 and D3Q27 velocity sets in two and three dimensions. A second order multi-scale expansion ensures that the scheme correctly ...Open AccessArticle -
Transition to asymmetry of transitional round fountains in a linearly stratified fluid
Published 2017In this study, a series of three-dimensional direct numerical simulations were carried out for transitional round fountains in a linearly-stratified fluid over the ranges of 100 ≤ Re ≤ 400, 1 ≤ F r ≤ 8 and 0.0 ≤ s ≤ 0.3, ...Open AccessArticle -
Turbulence structure of neutral and negatively buoyant jets
Published 2021High-fidelity measurements of velocity and concentration are carried out in a neutral jet (NJ) and a negatively buoyant jet (NBJ) by injecting a jet of fresh water vertically downwards into ambient fresh and saline water, ...Open AccessArticle