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 17 of 17 for “"TVD"”.
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Development of a Pilot Study Simulation to Investigate the Impact of Target Costing on Team Dynamics and Design Aesthetics
… has been referred to as Target Value Design (TVD), which forms an important fragment of the whole lean delivery system, Integrated Project Delivery. For the purpose of studying the team dynamics and the impact of cost on aesthetics, this research is split in to the following two parts. 1. …
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Multi-Criteria Decision Modeling for Best Value Selections in Target Value Design Integrated Project Delivery
… (IPD) combined with Target Value Design (TVD) is a better way to deliver value for the client than traditional guaranteed maximum price (GMP) methods. With traditional GMP delivery methods, the interests of the parties are often at odds. The goal of IPD is to align all party interests in …
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Hydrodynamics, sediment transport and morphodynamics at inlets and river mouths: a numerical investigation
… using a hybrid finite-difference finite-volume TVD-type scheme, is coupled with the wave model SWAN and several sediment transport model. This new nearshore modeling system is called NearCoM-TVD. The capability and limitation of NearCoM-TVD for several coastal applications, including tidal inlet …
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High Resolution Time-Limiter Schemes for Conservation Laws
… when the time step is beyond the original TVD limit. The improved stability is realized by taking local convex combination of a higher order oscillatory method (accurate mode) with a first order unconditionally TVD method (stable mode). The application of time-limiters, which detects the …
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Two-phase two-fluid model solver based on a high-resolution total variation diminishing scheme
… 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 two-fluid model. A hybridization of the monotone 1st-order upwind scheme and the Quadratic Upstream …
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A theory of value in design
… A theory of value in the context of design (TVD) is provided in this thesis. The theory provides a means to support the development of more comprehensive explanations on the value phenomenon and consequently on value in the context of design. The value phenomenon was investigated from a value …
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Numerical Methods for Compressible Multi-phase flows with Surface Tension
… shock capturing Total Variation Diminishing (TVD) finite volume scheme is used on both Cartesian and unstructured triangular grids. Regarding the TVD finite volume scheme on the unstructured grid, time-accurate local time stepping (LTS) is applied to compute the solutions of the governing PDE …
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Numerical modelling of hydrodynamic and solute transport processes in shallow water environment
… a range of flow conditions. A shock-capturing TVD-MacCormack model is used to provide reference results. In the solute transport modelling, a mesh-free, depth-averaged and highly robust random walk model has been developed for simulating the two-dimensional solute transport processes. The …
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Simulation and design of a hydrogen arcjet thruster seeded with cesium
… by MacCormacks predictor-corrector scheme and a TVD scheme. The electric potential was solved by successive over-relaxation. Results show that the seeded arcjet can be run with the cesium fully ionized but the hydrogen having minimal dissociation or ionization. When the flow passes through the …
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Managing Sustainability Value in Design: A Systems Approach
… question examines how Target Value Design (TVD), an integrated design management process, can elicit better delivery of sustainability values. This is developed through case study research of an exemplary design team and project. The findings identify a gap in the capability of the team to …
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Multidimensional diffusive shock acceleration in the Winds from massive stars
… into the WOMBAT (sWift Objects for Mhd BAsed on Tvd) code to solve diffusive shock acceleration for cosmic rays. Shock modification due to cosmic ray pressure is shown to be important in describing the shock dynamics of the colliding wind binary scenario. With 0.01% of the gas particles passing …
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Free surface flow and application to the filling and solidification of liquid metals into vessels of arbitrary shape
… the liquid, with an adaptation of the van Leer TVD scheme to define the instantaneous position of the interface. It is similar to the approach used by the well known Volume Of Fluid (VOF) method. However, the SEA technique deals with both air and liquid explicitly, whereas the VOF method does …
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Cluster Weather Vanes: Radio Galaxies as Indicators of Galaxy Cluster Dynamics
… a 2nd order Total Variation Diminishing (TVD) method and a 5th order Weighted Essentially Non-Oscillating (WENO) method. Appendices include other work on numerical methods used in the completion of this dissertation. We find that RG jets make excellent "weather-vanes" for understanding the …
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One-dimensional positive displacement pump description in cavitating conditions
… and space, with a total variation diminishing (TVD) scheme to preventspurious oscillation. In order to introduce a dissipation due to friction at thewall in a quasi-steady formulation, a source term is solved with a splittingmethod. To validate the code, the new simulation methodology was …
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Wave breaking onset and dissipation in a fully non-linear, staggered grid Boussinesq model
… grid scheme (Wei and Kirby, 1995) and FUNWAVE-TVD (Shi et al., 2012) are shown to have deficiencies in accu- rately reproducing wave shoaling up to the breaking point for steep regular waves (in the first case) and solitary waves (in the second). We have successfully addressed this issue by …
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Modelling of the liquid slag behaviour in the continuous casting mould
… a VOF technique with options for a Van-Leer (TVD) scheme [2] or alternative the popular Donor Acceptor scheme [3,4], both options work well but they are explicit and therefore extremely expensive computationally. Due to the size of the mesh and the CFL limit for stability, timesteps as small …
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Parallel Processing of Reactive Transport Models Using OpenMP
Transport codes are beginning to be parallelized in order to allow more complex add-ons, such as geochemical packages, to utilize finer, more accurate grids, and to reduce solution times making stochastic and Monte Carlo simulations more feasible. Most codes parallelized via MPI (message passing …