Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 5683 for “"Flows"”.
-
Modeling and Simulation of Molecular Couette Flows and Related Flows
… the velocity of gaseous Couette flow and related flows are derived from linearized Boltzmann BGK equation with Maxwell boundary condition and solved with high precision by using Chebyshev collocation and chunk-based collocation methods. The velocity profiles of gaseous Couette flows and related …
-
More homology flows
Flows and cuts have been the topic of much study since Ford and Fulkerson's original paper. The problem we look at is the computation of flows on some generalizations of planar graphs. In particular, the input graph can be embedded on a surface of genus g, and has the source and sink on the same …
-
Hybrid Ventilation Flows
… understanding of the behaviour of hybrid flows and only limited quantitative guidance available for designers. The term hybrid ventilation encompasses a whole spectrum of strategies which incorporate both mechanical elements, i.e. fans, and natural elements, i.e. vents which enable a …
-
Convex Network Flows
… only assumes that the constraints on the flows over each edge are in some convex set. The objective is to maximize a sum of concave utility functions---one for the net flow at every node and one for each edge flow---subject to these constraints. This framework not only includes many …
-
Advances In Computational Fluid Dynamics: Turbulent Separated Flows And Transonic Potential Flows
Computational solutions are presented for flows ranging from incompressible viscous flows to inviscid transonic flows. The viscous flow problems are solved using the incompressible Navier-Stokes equations while the inviscid solutions are attained using the full potential equation. Results for the …
-
Flows in Grooved Channels
… grooves on flow responses in laminar channel flows. Straight grooves have been considered which may have an arbitrary cross-section and an arbitrary orientation with respect to the flow direction. It has been shown that the grooves effects can be split into two parts; one due to the change in …
-
Exterior discrete semi-flows
… in the category of exterior discrete semi-flows: those of Brown-Grossman, Steenrod and Borsuk-Cech. After that, with a view to make a study about basins of attraction of fixed and, in general, m-periodic points associated with a rational map defined on the surface of the sphere S2, we …
-
Supersonic Constricted Plasma Flows
The Pocket Rocket electrothermal microthruster is a miniaturised electric propulsion system designed for nanosatellites operating in space. A weakly ionised capacitively coupled plasma is ignited in the flowing Ar gas propellant within a constricted discharge chamber at 1 Torr using less than 10 W …
-
Supersonic Constricted Plasma Flows
The Pocket Rocket electrothermal microthruster is a miniaturised electric propulsion system designed for nanosatellites operating in space. A weakly ionised capacitively coupled plasma is ignited in the flowing Ar gas propellant within a constricted discharge chamber at 1 Torr using less than 10 W …
-
Flames in Straining Flows
In Chapt. 2, a model is proposed for flammability limits based on flame stretch that is applicable to upward propagation through lean methane/air mixtures in round tube. Predictions of the model are in good agreement with experiment.
-
Turbulent flows over canopies
In this thesis, turbulent flows over canopies in the sparse and dense regimes are examined using direct numerical simulation. The term `canopy' is used to refer to tall roughness elements in the flow. Sparse canopies typically have large element spacings and allow turbulent eddies to penetrate …
-
Active flows and networks
Coherent, large scale dynamics in many nonequilibrium physical, biological, or information transport networks are driven by small-scale local energy input. In the first part of this thesis, we introduce and explore two analytically tractable nonlinear models for such active flow networks, drawing …
-
Mixing in stably stratified turbulent flows: improved parameterizations of diapycnal mixing in oceanic flows
… phenomenon in both natural and engineered flows. Fundamental understanding and quantitative prediction of turbulent mixing in stratified flows is a challenging problem, with a broad range of applications including (but not limited to) prediction of climate, ocean thermohaline circulation, …
-
Stability of flows in channels
Laminar stability flow for incompressible fluid flow in two dimensional symmetric channels of variable width is reviewed through a survey of various related topics, Many authors whose works are reviewed here investigated linear stability using the "WKB' method in which regions of growth of a small …
-
Modelling of turbulent swirling flows
… and reacting anistropic turbulent, swirling flows using popular turbulence models with a robust numrical procedure. The performance of these turbulence models is assessed and compared against experimental data for anisotropic, turbulent swirling flow in a cylindrical pipe and non-reacting and …
-
The Landscape of FDI Flows
… of recipients of foreign direct investment (FDI) flows. Researching FDI is critical because of the increasingly important role it has in the global economy and the many potential benefits it provides investors and host countries. This paper will examine the past, current, and future state of FDI …
-
Singularities in Free Surface Flows
Free surface flows where the shape of the interface separating two or more phases or liquids are unknown apriori, are commonplace in industrial applications and nature. Distribution of drop sizes, coalescence rate of drops, and the behavior of thin liquid films are crucial to understanding and …
Page 1 of 285