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 125 for “"limiter"”.
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High Resolution Time-Limiter Schemes for Conservation Laws
This study investigates the high resolution time-limiter schemes for conservation laws. These schemes are proposed (K.Duraisamy, J.D.Baeder, J-G Liu, 2003) to enhance the stability of high order implicit time marching when the time step is beyond the original TVD limit. The improved stability is …
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Design of Microwave Front-End Narrowband Filter and Limiter Components
… gas plasma elements to create a filter-limiter: a novel narrowband filterwith integral HPM limiter behavior. An equivalent circuit model is presented for the ac-coupled plasma-shell components used in this dissertation, and parameter values were extracted from measured results and EM …
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Design of a power limiter for an FSAE electric racecar
… a violation in the following year, a power limiter was developed to ensure that the power consumption of the vehicle is reliably under the limit. Since weight and space come at a premium when it comes to an electric racecar, the power limiting approaches were implemented through C code in …
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Performance of Ds/ssma Communications in Impulsive Channels (Nongaussian, Hard Limiter)
Performance of digital linear and nonlinear correlation receivers is studied in a multi-user environment. There are assumed to be two types of sources interfering with data transmission: multiple-access interference, and additive channel noise, which is attributed to impulsive noise sources in the …
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A comprehensive overview, behavioral model and simulation of a Fault Current Limiter
… retrofit costs. The use of fault current limiter (FCL) is proposed to mitigate the effects of high current levels on a distribution system. A comprehensive and up-to-date literature review of FCL technologies is presented. Detailed efforts of an in-house developed behavioral …
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Poloidal asymmetries in the limiter shadow plasma of the Alcator C tokamak
Thesis (Sc. D.)--Massachusetts Institute of Technology, Dept. of Nuclear Engineering, 1986.
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Resistive-type Superconducting Fault Current Limiter (RSFCL) and Its Application in Power Systems
… The resistive-type superconducting fault current limiter (RSFCL) is a device that can help to mitigate the increasing level of fault currents. It can also contribute to the performance, stability and efficiency of electricity grids. In order to promote the RSFCL more effectively, it is essential …
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Speed and fatigue control using speed limiter integrated fatigue analyzer for truck and bus
… objective of this study is to develop the speed limiter that integrated with fatigue analyser and investigate its effect on engine performance, accident rate and user (driver and passenger) perception. The new features were developed through several stages which include determining parameters …
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Plan d'actions visant à limiter et diminuer la prolifération des cyanobactéries dans le lac Memphrémagog
… de mettre en place un plan d’actions visant à limiter et enrayer les proliférations de cyanobactéries.
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Design and model: Intelligent solid-state current limiter to prevent sympathetic tripping problem on power and energy applications
This paper analyzes the Sympathetic Tripping Problem and proposes and tests a solution to it. To do so, it considers a case study, develops a model to explain this case study, and uses this model to test X. The results reveal that transferring power near the system voltage stability limit is a …
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A DG HWENO scheme for hyperbolic equations
… is used as the starting point for the proposed limiter. We present a general approach for building a limiter for Runge-Kutta time marching schemes which reconstructs the higher order moments of troubled cells using only information of neighboring cells. This technique is used to develop a …
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A PAM Decomposition of Weak CPM
… uses weak CPM as its modulation scheme and a limiter-discriminator as its demodulation scheme. A PAM representation of weak CPM was developed which representation provided the necessary componenents to build a simplified PAM-based receiver that outperformed the EFTS limiter-discriminator, even …
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Parallelization of the Euler Equations on Unstructured Grids
… A general method for extending one-dimensional limiter formulations to the unstructured case is also discussed and applied to Van Albada’s limiter as well as Roe’s Superbee limiter. Solutions and convergence histories for a two-dimensional supersonic ramp problem using these limiters are …
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Active limiting frequency selective surface at X-band
… communication systems will commonly employ limiters to protect sensitive low-noise electronics from high-power emitters that may be located nearby. Receivers may be designed to operate with signals in the nanowatt (10-9 W) range, while nearby transmitters may be broadcasting hundreds or …
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Invariant-region-preserving discontinuous Galerkin methods for systems of hyperbolic conservation laws
… In particular, our focus is on designing an IRP limiter to modify the numerical solution and identifying sufficient conditions for IRP DG schemes by extending Zhang and Shu's work on positivity-preserving schemes for conservation laws [X. Zhang and C.-W. Shu., Journal of Computational Physics, …
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STRUCTURE-OPTIMIZED AND ORDER-PRESERVING METHODS FOR ADVECTION AND TIME STEPPING
… we develop finite volume methods with optimal limiter functions based on the class of WENO type methods. Limiter functions are applied to finite volume methods to avoid oscillations near discontinuities and sharp transitions for hyperbolic equations. Many limiter functions have been introduced …
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Three-dimensional modeling of plasma transport in the HIDRA stellarator
… operational campaigns. An outboard midplane limiter, inboard midplane limiter, and 'trench' limiter (along the bottom of the torus) were tested with RF input to core-edge power deposition efficiencies of 10-50% for a 26 kW 2.45 GHz combined RF input discharge. Axial magnetic field strengths …
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Étude comparative des conditions environnementales potentiellement limitantes dans l'établissement d'une espèce aquatique envahissante Ciona intestinalis (Linnaeus, 1767) dans deux systèmes de bassins versants à l'Île-du-Prince-Edouard, Canada
… facteurs clés, qui pourraient potentiellement limiter l'établissement d'une espèce de tunicier à l'Î.-P.-É."--feuille v.
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Développement de l'indice pondéré de connectivité moléculaire (IPCM)
… comme représentants des BPC afin de limiter le nombre d’isomères présents lors du calcul. L’IPCM tel que formulé arrive à prédire les forces dispersives impliquées dans le processus chromatographique.
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