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Dissertation
Master thesis and internship[BR]- Master's thesis : Impact of operating conditions on the transitional flow in a low-pressure fast turbine cascade[BR]- Integration internship
Authors: --- --- ---
Year: 2021 Publisher: Liège Université de Liège (ULiège)

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Abstract

The transition of boundary layer from laminar to turbulent is more probable to happen across various components of a turbomachine. If narrowed down to a case of low-pressure turbine cascade, the transition of flow in boundary layer is due to separation induction. Due to this, blade losses are observed and it depends on various physical characteristics such as size and the length of the separation bubble. The physical characteristics can vary based on the variation of flow Reynolds number, expansion ration of the flow and the inlet flow turbulence intensity. Such characteristics can be studied using computational techniques, CFD analysis. Various computational techniques can be used for this scope of study, ranging from Reynolds Averaged Navier Stokes to Direct Numerical Simulation modelling, and each technique have its own set of advantages and disadvantages. 

The objective of this thesis is to present and acknowledge on how these separation bubble physical characteristics vary due to the variation of flow expansion ratio and variation of exit isentropic Reynolds number for a SPLEEN blade cascade. Direct Numerical Simulation technique will be adapted for this thesis, due to its ability to accurately predict separation bubble location and size but compromising to relatively high computational power requirement.


Book
Environmental aerodynamics
Author:
ISBN: 0853120633 9780853120636 Year: 1978 Publisher: Chichester: Ellis Horwood,


Book
The 2nd International Conference on Advances in Mechanical Engineering
Authors: --- --- ---
ISBN: 3036557385 3036557377 Year: 2022 Publisher: Basel MDPI - Multidisciplinary Digital Publishing Institute

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Abstract

The Second International Conference on Advances in Mechanical Engineering, ICAME-22, was held on 25th August, 2022 at the Mechanical Engineering Department of Capital University of Science and Technology. All articles underwent a rigorous single-blind peer review process. ICAME-22 accepted papers in the disciplines of experimental and computational fluid dynamics, thermodynamics, heat Ttransfer, machine and mechanisms, design, solid mechanics, manufacturing, production and industrial engineering, engineering management, technology management, renewable energy, environmental engineering, bioengineering, materials, failure analysis, and related fields.


Book
Turbulence in River and Maritime Hydraulics
Authors: --- ---
Year: 2019 Publisher: MDPI - Multidisciplinary Digital Publishing Institute

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Abstract

Understanding of the role of turbulence in controlling transport processes is of paramount importance for the preservation and protection of aquatic ecosystems, the minimization of the deleterious consequences of anthropogenic activity, and the successful sustainable development of river and maritime areas. In this context, the present Special Issue collects 15 papers which provide a representation of the present understanding of turbulent processes and their effects in river and maritime environments. The presented collection of papers is not exhaustive, but it highlights the key priority areas and knowledge gaps in this field of research. The published papers present the state-of-the-art knowledge of complex environmental flows which are useful for researchers and practitioners. The paper contents are an overview of some recent topics of research and an exposure of the current and future challenges associated with these topics.

Keywords

inclined negatively buoyant jets --- flow mixing --- Kelvin–Helmholtz --- flow-through system --- mixing --- regular waves --- vegetation patch --- turbulence invariants --- junction angle --- gravel-bed rivers --- spatial analysis --- spectral model --- coastal lagoon --- roughness --- MIKE 21 FM (HD) --- billow --- dissipation --- river mouth --- waves --- advection --- wave–current interaction --- plunging breaking waves --- turbulence --- flow deflection zone --- smoothed particle hydrodynamics models --- numerical modelling --- physical modelling --- surface waves --- lobe --- dilution --- numerical model --- channel confluences --- prediction --- meanders --- CFD --- bedrock canyon --- MIKE 3 FM (HD & --- SVF --- diffusion --- dense jet --- sub-grid turbulence --- flow separation zone --- breaking waves --- Spartina maritima --- jets --- maritime areas --- flow retardation zone --- seabed friction --- sea discharges --- secondary motion --- ADCP --- cleft --- submerged ratio --- laboratory experiments --- wake region --- eddy viscosity --- bottom friction --- casting technique --- turbulent jet --- tidal inlets --- rivers --- nonlinear shallow water equations --- vorticity --- hydrodynamic model --- flow resistance --- PANORMUS --- spectral dissipation --- TR) --- macrovortices --- turbulent processes --- velocity --- trajectory --- flexible vegetation --- energy dissipation --- gravity current --- bed shear stress --- current flow --- drag coefficient --- residence time --- wave attenuation


Book
Turbulence in River and Maritime Hydraulics
Authors: --- ---
Year: 2019 Publisher: MDPI - Multidisciplinary Digital Publishing Institute

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Abstract

Understanding of the role of turbulence in controlling transport processes is of paramount importance for the preservation and protection of aquatic ecosystems, the minimization of the deleterious consequences of anthropogenic activity, and the successful sustainable development of river and maritime areas. In this context, the present Special Issue collects 15 papers which provide a representation of the present understanding of turbulent processes and their effects in river and maritime environments. The presented collection of papers is not exhaustive, but it highlights the key priority areas and knowledge gaps in this field of research. The published papers present the state-of-the-art knowledge of complex environmental flows which are useful for researchers and practitioners. The paper contents are an overview of some recent topics of research and an exposure of the current and future challenges associated with these topics.

Keywords

inclined negatively buoyant jets --- flow mixing --- Kelvin–Helmholtz --- flow-through system --- mixing --- regular waves --- vegetation patch --- turbulence invariants --- junction angle --- gravel-bed rivers --- spatial analysis --- spectral model --- coastal lagoon --- roughness --- MIKE 21 FM (HD) --- billow --- dissipation --- river mouth --- waves --- advection --- wave–current interaction --- plunging breaking waves --- turbulence --- flow deflection zone --- smoothed particle hydrodynamics models --- numerical modelling --- physical modelling --- surface waves --- lobe --- dilution --- numerical model --- channel confluences --- prediction --- meanders --- CFD --- bedrock canyon --- MIKE 3 FM (HD & --- SVF --- diffusion --- dense jet --- sub-grid turbulence --- flow separation zone --- breaking waves --- Spartina maritima --- jets --- maritime areas --- flow retardation zone --- seabed friction --- sea discharges --- secondary motion --- ADCP --- cleft --- submerged ratio --- laboratory experiments --- wake region --- eddy viscosity --- bottom friction --- casting technique --- turbulent jet --- tidal inlets --- rivers --- nonlinear shallow water equations --- vorticity --- hydrodynamic model --- flow resistance --- PANORMUS --- spectral dissipation --- TR) --- macrovortices --- turbulent processes --- velocity --- trajectory --- flexible vegetation --- energy dissipation --- gravity current --- bed shear stress --- current flow --- drag coefficient --- residence time --- wave attenuation


Book
Turbulence in River and Maritime Hydraulics
Authors: --- ---
Year: 2019 Publisher: MDPI - Multidisciplinary Digital Publishing Institute

Loading...
Export citation

Choose an application

Bookmark

Abstract

Understanding of the role of turbulence in controlling transport processes is of paramount importance for the preservation and protection of aquatic ecosystems, the minimization of the deleterious consequences of anthropogenic activity, and the successful sustainable development of river and maritime areas. In this context, the present Special Issue collects 15 papers which provide a representation of the present understanding of turbulent processes and their effects in river and maritime environments. The presented collection of papers is not exhaustive, but it highlights the key priority areas and knowledge gaps in this field of research. The published papers present the state-of-the-art knowledge of complex environmental flows which are useful for researchers and practitioners. The paper contents are an overview of some recent topics of research and an exposure of the current and future challenges associated with these topics.

Keywords

inclined negatively buoyant jets --- flow mixing --- Kelvin–Helmholtz --- flow-through system --- mixing --- regular waves --- vegetation patch --- turbulence invariants --- junction angle --- gravel-bed rivers --- spatial analysis --- spectral model --- coastal lagoon --- roughness --- MIKE 21 FM (HD) --- billow --- dissipation --- river mouth --- waves --- advection --- wave–current interaction --- plunging breaking waves --- turbulence --- flow deflection zone --- smoothed particle hydrodynamics models --- numerical modelling --- physical modelling --- surface waves --- lobe --- dilution --- numerical model --- channel confluences --- prediction --- meanders --- CFD --- bedrock canyon --- MIKE 3 FM (HD & --- SVF --- diffusion --- dense jet --- sub-grid turbulence --- flow separation zone --- breaking waves --- Spartina maritima --- jets --- maritime areas --- flow retardation zone --- seabed friction --- sea discharges --- secondary motion --- ADCP --- cleft --- submerged ratio --- laboratory experiments --- wake region --- eddy viscosity --- bottom friction --- casting technique --- turbulent jet --- tidal inlets --- rivers --- nonlinear shallow water equations --- vorticity --- hydrodynamic model --- flow resistance --- PANORMUS --- spectral dissipation --- TR) --- macrovortices --- turbulent processes --- velocity --- trajectory --- flexible vegetation --- energy dissipation --- gravity current --- bed shear stress --- current flow --- drag coefficient --- residence time --- wave attenuation

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