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.
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Showing 1 to 20 of 116 for “"two-fluid"”.
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Two fluid numerical model for coastal applications
… aim of the present thesis is to develop a new two-phase model called COBRAS2 (stands for Cornell Breaking waves And Structures 2 phases), that is the enhancement of the single-phase code COBRAS0, originally developed at Cornell University (Lin & Liu, 1998). In the first part of the work, both …
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Two-phase closed thermosyphon with two-fluid mixtures.
… to investigate the performance of stationary two-phase closed thermosyphons with two-fluid mixtures. Three mixtures were used as the working fluids: (1) water-ethanol, (2) water-ethyleneglycol and (3) water-glycerol. The results are presented to show the effects of ratio of two fluid …
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Fully nonlinear interfacial waves in a bounded two-fluid system
We study the nonlinear flow which results when two immiscible inviscid incompressible fluids of different densities and separated by an interface which is free to move and which supports surface tension, are caused to flow in a straight infinite channel. Gravity is taken into consideration and the …
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Two-fluid flow in sedimentary rock : complexity, transport, and simulation
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Earth, Atmospheric, and Planetary Sciences, 1996.
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An experimental analysis of two-fluid traffic model parameter sensitivity
The Two-Fluid traffic model is a tool used to measure the quality of service in city traffic networks. The model has been calibrated for the central business district of Roanoke, Virginia and the results have been compared to those from various other cities around the world. In addition, the …
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Non-linear, non-spherical bubble dynamics near a two fluid interface
… with jetting directed toward and away from the two types of interface respectively. This work generalises these interactions by studying the effect of a two fluid interface supporting a density discontinuity. Such interactions may provide significant new insight into the mechanisms present in …
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Improved closure relations for the two fluid-model in flashing flows
The two-fluid model is a widely used approach for the modeling of two-phase flows, consisted of two separate sets of mass, momentum, and energy conservation equations for the liquid and gas phases. In the two-fluid model, the interaction between the phases is determined by the mass, momentum, and …
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Well-posedness and convergence of cfd two-fluid model for bubbly flows
… on developing a well-posed multidimensional CFD two-fluid model (TFM) for bubbly flows. Two-phase flows exhibit a wide range of local flow instabilities such as Kelvin-Helmholtz, Rayleigh-Taylor, plume and jet instabilities. They arise due to the density difference and/or the relative velocity …
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Vapor Generation in the Two-Group Two-Fluid Model in Boiling Flow
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2024-12-01
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Influence of the city geometric features on the two fluid model parameters
The traffic flow in an urban street network is a complicated system which involves many variables. Some of these variables relate to the network's geometric features; some of these variables reflect the characteristics of the vehicles, drivers and pedestrians using the network. The Two Fluid Model …
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Sensitivity of the Two-Fluid Model to Constitutive Correlations for Large Diameter Pipes
… effect on the void fraction prediction. The two-group approach for calculating drift-flux was found to have a higher accuracy than the one-group approach. A new drift-flux correlation was developed using the two-group approach, and was able to predict void fraction with a RMS error of 10.5%. …
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Transition Flow in Edge Plasmas: Solution of the Two-Fluid Region With Sources
In the context of the transition flow between highly collisional plasma and collisionless sheath, the linearized Fokker-Planck equation for the ions, in an intermediate collisionality region, is generalized to include an arbitrary source function. Nonisentropic effects due to the source function …
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The two-fluid model with interfacial area transport equation in gas-dispersed condensing flows
The student, Vineet Kumar, accepted the attached license on 2019-10-01 at 17:11.
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Gravity, capillary and dilational wave mode resonance at a visco-elastic two-fluid interface
… and also waves traveling on a visco-elastic fluid at a variety of temperatures. In addition to the wave data we obtained, we also measured in-situ surface tension. Analyzing the experimental data, we demonstrated the effects of modulation of one wave mode on another. We obtained the …
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Development of a two-fluid, two-phase model for light water reactor subchannel analysis
Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Nuclear Engineering, 1980.
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Two-phase two-fluid model solver based on a high-resolution total variation diminishing scheme
A new numerical method and a solver for the two-phase two-fluid model are developed using an innovative high-resolution, Total Variation Diminishing (TVD) scheme. The new scheme is derived first for scalar hyperbolic problems using the method of flux limiters, then extended to the two-phase …
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Two-fluid simulations of magnetic reconnection with a kinetic closure for the electron pressure anisotropy
… region and the electron current layer. Previous fluid models and simulations fail to account for this anisotropy. In this thesis, new equations of state that accurately describe the electron pressure anisotropy in cases of sufficiently strong guide magnetic field are implemented in fluid …
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Adjoint sensitivity analysis of the two-phase two-fluid model based on an approximate Riemann solver
… adjoint sensitivity analysis framework for the two-phase two-fluid model are developed and verified. Both the numerical solver and the adjoint sensitivity analysis framework are based on an analytical analysis of the two-phase two-fluid model. The challenge (due to the arbitrary equation of …
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Development of a fully implicit two-fluid, thermal-hydraulic model for boiling water reactor transient analysis
Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Nuclear Engineering, 1980.
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