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Showing 1 to 11 of 11 for “"buoyant jet"”.
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Turbulent Simulations of a Buoyant Jet-in-Crossflow
A lack of complex analysis for a thermally buoyant jet in a stratified crossflow has motivated the studies presented. A computational approach using the incompressible Navier--Stokes equations (NSE) under the Boussinesq approximation is utilized. Temperature and salinity scalar transport equations …
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The rise and dilution of buoyant jets and their behaviour in an internal wave field
A new buoyant jet model is presented in this thesis to simulate the trajectory and dilution of a fluid from a single port or line source. The new features include: A generalised derivation of the governing equations so that buoyant jets discharged from a source of any shape can be modelled within …
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Radial spreading of vertical buoyant jets in shallow water
… shallow water bodies. Often these effluents are buoyant with respect to the receiving environment. In many jurisdictions, regulations require that a certain dilution is achieved within a specified mixing zone. In shallow water it is likely that a portion of this dilution will have to be achieved …
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Diffusion of Three-Dimensional Slot Jets With Deep and Shallow Submergence
… with high initial velocity it behaves like a non-buoyant jet. The velocity discontinuity between the jet and the receiving water gives rise to strong shearing action generating turbulence, which diffuses the heated water into the colder water keeping the temperature rise within acceptable limits.
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Dynamics of buoyant releases in confined spaces.
The flows that may result from the release of a buoyant fluid from a small source in a confined space are varied and complex, depending on the source characteristics, the confining geometry and container ventilation. Previous work has generally been based on the 'filling-box' model (Baines & Turner …
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ΚΑΤΑΚΟΡΥΦΕΣ ΤΥΡΒΩΔΕΙΣ ΦΛΕΒΕΣ ΣΕ ΣΤΡΩΜΑΤΟΠΟΙΗΜΕΝΟ ΑΠΟΔΕΚΤΗ
STUDY OF THE NEAR-FIELD BEHAVIOUR OF A ROUND BUOYANT JET, DISCHARGING VERTICALLY UPWARDS IN A TWO-LAYER STABLY STRATIFIED AMBIENT. EXPERIMENTS WERE PERFORMED TO CONFIRM THE THEORETICAL RESULTS DEVELOPED IN THE ANALYSIS, WITH VARIOUS INITIAL CONDITIONS OF THE JET AND VARIOUS DEPTHS AND DENSITIES OF …
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Characteristics of the High Speed Gas-Liquid Interface
… cases of subsonic, transonic, and supersonic gas jets submerged underwater and the transient development of an underwater projectile reaching the supercavitating state. These studies are motivated by the need to understand the basic physics associated with a novel submersible missile launcher …
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Subgrid Scale Modeling for Large Eddy Simulation of Buoyant Turbulent Flows
… which is being increasingly used for simulating buoyant turbulent flows, requires accurate modeling of the subgrid sclae (SGS) momentum and buoyancy fluxes. This thesis presents a series of LES and direct numerical simulation (DNS) studies towards a priori and a posteriori evaluation of existing …
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Analysis and Modelling of Desalination Brines
… into the sea is an inclined negatively buoyant jet of a single port or multi-diffuser. Two small-scale experimental studies were conducted to investigate the behaviour of a dense jet discharged into lighter ambient water. The first lab-scale experiment concerned the benefit of the …
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Turbulent convection from an area source in a confined space
… lazy plume that is formed by the release of buoyant fluid from a circular source in a cylindrical container. This configuration allows us to explore a host of convection problems that uncover important features of the dynamics of turbulent plumes, Rayleigh-Taylor convection, gravity currents …