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Dissertations / Theses on the topic 'Current-flow model'

Author: Grafiati

Published: 4 June 2025

Last updated: 1 August 2025

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1

Bai, Yang. "Simulating Surface Flow and Sediment Transport in Vegetated Watershed for Current and Future Climate Condition." Diss., The University of Arizona, 2014. http://hdl.handle.net/10150/333038.

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The complex interaction between flow, vegetation and sediment drives the never settled changes of riverine system. Vegetation intercepts rainfall, adds resistance to surface flow, and facilitates infiltration. The magnitude and timing of flood flow are closely related to the watershed vegetation coverage. In the meantime, flood flow can transport a large amount of sediment resulting in bank erosion, channel degradation, and channel pattern change. As climate changes, future flood frequency will change with more intense rainfalls. However, the quantitative simulation of flood flow in vegetated

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2

Seidel, T., and M. Beyer. "Two-phase flow experiments in a model of the hot leg of a pressurised water reactor." Helmholtz-Zentrum Dresden-Rossendorf, 2012. http://nbn-resolving.de/urn:nbn:de:bsz:d120-qucosa-85349.

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In order to investigate the two-phase flow behaviour in a complex reactor-typical geometry and to supply suitable data for CFD code validation, a model of the hot leg of a pressurised water reactor was built at FZD. The hot leg model is operated in the pressure chamber of the TOPFLOW test facility, which is used to perform high-pressure experiments under pressure equilibrium with the inside atmosphere of the chamber. This technique makes it possible to visualise the two-phase flow through large windows, also at reactor-typical pressure levels. In order to optimise the optical observation possi

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3

Besnard, Stephane. "Performance and application of the Modular Acoustic Velocity Sensor (M.A.V.S.) current meter for laboratory measurements." Texas A&M University, 2004. http://hdl.handle.net/1969.1/1538.

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Every type of current meter is different and has its proper characteristics. Knowing the performance of a current meter is essential in order to use it properly either for field or laboratory measurements (such as in the Offshore Technology Research Center wave basin). A study of the MAVS (Modular Acoustic Velocity Sensor) in a wave basin is a first step essential for later deployment in real studies. This thesis is based on data obtained from different series of laboratory measurements conducted in the OTRC wave basin. The objective of the first part of the study was to characterize the MAVS

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4

Seidel, Tobias, Christoph Vallée, Dirk Lucas, Matthias Beyer, and Darlianto Deen. "Two-phase flow experiments in a model of the hot leg of a pressurised water reactor." Forschungszentrum Dresden, 2010. http://nbn-resolving.de/urn:nbn:de:bsz:d120-qucosa-33535.

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In order to investigate the two-phase flow behaviour in a complex reactor-typical geometry and to supply suitable data for CFD code validation, a model of the hot leg of a pressurised water reactor was built at FZD. The hot leg model is operated in the pressure chamber of the TOPFLOW test facility, which is used to perform high-pressure experiments under pressure equilibrium with the inside atmosphere of the chamber. This technique makes it possible to visualise the two-phase flow through large windows, also at reactor-typical pressure levels. In order to optimise the optical observation possi

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5

Beyer, Matthias, Dirk Lucas, Heiko Pietruske, and Lutz Szalinski. "Two-Phase Flow Experiments on Counter-Current Flow Limitation in a model of the Hot Leg of a Pressurized Water Reactor (2015 test series)." Helmholtz-Zentrum Dresden-Rossendorf, 2017. http://nbn-resolving.de/urn:nbn:de:bsz:d120-qucosa-216094.

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Counter-Current Flow Limitation (CCFL) is of importance for PWR safety analyses in several accident scenarios connected with loss of coolant. Basing on the experiences obtained during a first series of hot leg tests now new experiments on counter-current flow limitation were conducted in the TOPFLOW pressure vessel. The test series comprises air-water tests at 1 and 2 bar as well as steam-water tests at 10, 25 and 50 bar. During the experiments the flow structure was observed along the hot leg model using a high-speed camera and web-cams. In addition pressure was measured at several positions

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6

Seidel, T., and M. Beyer. "Two-phase flow experiments in a model of the hot leg of a pressurised water reactor." Helmholtz-Zentrum Dresden-Rossendorf, 2011. https://hzdr.qucosa.de/id/qucosa%3A22146.

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In order to investigate the two-phase flow behaviour in a complex reactor-typical geometry and to supply suitable data for CFD code validation, a model of the hot leg of a pressurised water reactor was built at FZD. The hot leg model is operated in the pressure chamber of the TOPFLOW test facility, which is used to perform high-pressure experiments under pressure equilibrium with the inside atmosphere of the chamber. This technique makes it possible to visualise the two-phase flow through large windows, also at reactor-typical pressure levels. In order to optimise the optical observation possi

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7

El-Geziry, Tarek Mohamed Ahmed. "Environmental impact assessment and process simulation of the tidal current energy resource in the Strait of Messina." Thesis, University of Edinburgh, 2010. http://hdl.handle.net/1842/4779.

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Interest in exploring renewable energy resources has increased globally, especially with recent worldwide intentions to maintain the global climate. Looking at the oceans as a vast sustainable clean energy resource to satisfy present high humankind energy demands has been strongly recommended. Several types of renewable energy resources exist in the oceans: waves, tides, thermal and salinity variations, currents, and offshore winds. Exploiting tidal currents is considered one of the most effective approaches to the generation of electricity. Tidal turbines are deployed beneath the sea surface

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8

Breckenfelder, Tilia-Manuela [Verfasser], Monika [Akademischer Betreuer] [Gutachter] Rhein, and Paul G. [Gutachter] Myers. "North Atlantic Current in model and observations: Transport variability, flow paths and hydrography / Tilia-Manuela Breckenfelder ; Gutachter: Monika Rhein, Paul G. Myers ; Betreuer: Monika Rhein." Bremen : Staats- und Universitätsbibliothek Bremen, 2017. http://d-nb.info/1138338419/34.

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9

ANDRADE, DELVONEI A. de. "Analise termo hidrodinamica de uma centrifuga a contracorrente." reponame:Repositório Institucional do IPEN, 1999. http://repositorio.ipen.br:8080/xmlui/handle/123456789/10721.

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Made available in DSpace on 2014-10-09T12:43:20Z (GMT). No. of bitstreams: 0<br>Made available in DSpace on 2014-10-09T13:56:10Z (GMT). No. of bitstreams: 1 06481.pdf: 5013180 bytes, checksum: 7fd69f45c605162fe74bdcf0decbd24d (MD5)<br>Tese (Doutoramento)<br>IPEN/T<br>Instituto de Pesquisas Energeticas e Nucleares - IPEN/CNEN-SP

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10

Gerber, George. "Experimental measurement and numerical modelling of velocity, density and turbulence profiles of a gravity current." Thesis, Link to the online version, 2008. http://hdl.handle.net/10019/841.

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11

Goude, Anders. "Fluid Mechanics of Vertical Axis Turbines : Simulations and Model Development." Doctoral thesis, Uppsala universitet, Elektricitetslära, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-183794.

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Two computationally fast fluid mechanical models for vertical axis turbines are the streamtube and the vortex model. The streamtube model is the fastest, allowing three-dimensional modeling of the turbine, but lacks a proper time-dependent description of the flow through the turbine. The vortex model used is two-dimensional, but gives a more complete time-dependent description of the flow. Effects of a velocity profile and the inclusion of struts have been investigated with the streamtube model. Simulations with an inhomogeneous velocity profile predict that the power coefficient of a vertical

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12

Брусак, Василь Юрійович. "Автоматизація установки каталітичного крекінгу з прямоточним реактором". Bachelor's thesis, КПІ ім. Ігоря Сікорського, 2019. https://ela.kpi.ua/handle/123456789/29050.

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Дипломний проект бакалавра на тему: «Автоматизація установки каталітичного крекінгу з прямоточним реактором» містить пояснювальну записку об ̓ємом 61 сторінок, специфікацію для функціональної схеми об ̓ємом 4 сторінок. Пояснювальна записка містить 5 розділів, 1 додаток та 11 літературних джерел. В дипломному проекті бакалавра виконаний аналіз технологічної схеми каатлітичного крекінгу з прямоточним реактором, як об ̓єкта автоматизації. Розроблено функціональну схему автоматизації для цього ж процесу, принципову електричну схему аварійного захисту і технологічного блокування електродвигунів,

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13

Kiss, Andrew Elek, and Andrew Kiss@anu edu au. "Dynamics of laboratory models of the wind-driven ocean circulation." The Australian National University. Research School of Earth Sciences, 2001. http://thesis.anu.edu.au./public/adt-ANU20011018.115707.

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This thesis presents a numerical exploration of the dynamics governing rotating flow driven by a surface stress in the " sliced cylinder " model of Pedlosky & Greenspan (1967) and Beardsley (1969), and its close relative, the " sliced cone " model introduced by Griffiths & Veronis (1997). The sliced cylinder model simulates the barotropic wind-driven circulation in a circular basin with vertical sidewalls, using a depth gradient to mimic the effects of a gradient in Coriolis parameter. In the sliced cone the vertical sidewalls are replaced by an azimuthally uniform slope around the

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14

Wetind, Ruben. "Two-phase flows in gas-evolving electrochemical applications." Doctoral thesis, Stockholm, 2001. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-3223.

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15

Vallée, Christophe. "Dynamics of the free surface of stratified two-phase flows in channels with rectangular cross-sections." Forschungszentrum Dresden, 2012. http://nbn-resolving.de/urn:nbn:de:bsz:d120-qucosa-86493.

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Stratified two-phase flows were investigated at different test facilities with horizontal test sections in order to provide an experimental database for the development and validation of computational fluid dynamics (CFD) codes. These channels were designed with rectangular cross-sections to enable optimal observation conditions for the application of optical measurement techniques. Consequently, the local flow structure was visualised with a high-speed video camera, delivering data with high-resolution in space and time as needed for CFD code validation. Generic investigations were performed

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16

Sleath, Alison I. 1978. "Simple models for turbulent wave-current bottom boundary layer flow : theoretical formulations and applications." Thesis, Massachusetts Institute of Technology, 2004. http://hdl.handle.net/1721.1/29400.

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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 2004.<br>Includes bibliographical references (leaves 185-190).<br>This study presents the theoretical formulations and applications of simple models for turbulent wave-current bottom boundary layer flow. Eddy viscosity formulations are presented for each model in order to analytically solve the governing equations for the bottom boundary layer. Approximations and procedures for obtaining practical solutions of the current velocity profile are presented for the two-layer Madsen-Salles (1998) and

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17

Shaheed, Rawaa. "3D Numerical Modelling of Secondary Current in Shallow River Bends and Confluences." Thesis, Université d'Ottawa / University of Ottawa, 2016. http://hdl.handle.net/10393/34922.

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Secondary currents are one of the important features that characterize flow in river bends and confluences. Fluid particles follow a helical path instead of moving nearly parallel to the axis of the channel. The local imbalance between the vertically varying centrifugal force and the cross-stream pressure gradient results in generating the secondary flow and raising a typical motion of the helical flow. A number of studies, including experimental or mathematical, have been conducted to examine flow characteristics in curved open channels, river meanders, or confluences. In this research, the i

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18

Cordero, Bautista Luis Gustavo. "Aplicação do algoritmo genético adaptativo com hipermutação no ajuste dos parâmetros dos controladores suplementares e dispositivo FACTS IPFC /." Ilha Solteira, 2019. http://hdl.handle.net/11449/182292.

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Orientador: Percival Bueno de Araujo<br>Resumo: As perturbações ou variações de carga produzem oscilações eletromecânicas que devem ser amortecidas o mais rápido possível para garantir confiabilidade e estabilidade da rede. Neste trabalho apresenta-se uma análise do dispositivo FACTS Interline Power Flow Controller (IPFC) e o controlador Proporcional Integral (PI) no gerenciamento dos fluxos de potência e a influência dos Estabilizadores do Sistema de Potência (ESP) e do IPFC Power Oscillation Damping (POD) sobre a estabilidade do sistema elétrico de potência. Neste trabalho enfoca-se nos estu

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19

Litrico, Giuliana. "Strongly coupled models for the prediction of electrochemical reactors performances." Thèse, Université de Sherbrooke, 2017. http://hdl.handle.net/11143/11859.

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La modélisation mathématique des systèmes électrochimiques, et en général la modélisa- tion des systèmes fluidiques réactifs en présence de champs électriques, est un problème d’une complexité telle que des solutions analytiques n’existent que dans des cas très simpli- fiés et la solution numérique est, malgré toute la puissance de calcul moderne, encore très difficile. À ce jour, les avancées dans la modélisation au niveau des modèles d’écoulement sont majeures, mais la modélisation couplée de l’écoulement, avec le champ électrique en présence de solutions concentrées demeure encore un

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20

Žůrek, Radomil. "Využití grafů signálových toků k návrhu diferenčních filtrů." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2010. http://www.nusl.cz/ntk/nusl-218355.

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The dissertation deals with the design of fully differential frequency filters using the signal flow graphs. It presents the procedures for designing frequency filters, focusing on the active elements such as multiple-output current followers (MO-CF) and digitally adjustable current amplifiers (DACA), which work in a current mode. It is theoretically discussed the issue of designing the M-C graphs, which are the graphic analogy of voltage and current incidence matrices. There are also presented three designs of 2nd order frequency filter circuits using the indirect method of design by M-C grap

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21

Jašek, František. "Návrh nových aktivních filtrů pomocí grafů signálových toků." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2010. http://www.nusl.cz/ntk/nusl-218236.

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This master’s thesis describes the design of the frequency filters by the help of the graph of the signal flows. There are defined by modern components like GVC (Generalized Voltage Conveyor), GCC (Generalized Current Conveyor), CF (Current Follower), DO-CF (Dual-Output Current Follower), OTA (Operational Transconductance Amplifier), BOTA (Ballanced Operational Transconductance Amplifier) and CFTA (Current Follower Transconductance Amplifier), the graphs of the signal flows, which describe their activity in the thesis. In the other part of the thesis is illustrated the procedure of the design

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22

Gajdoš, Adam. "Elektronicky rekonfigurovatelné kmitočtové filtry." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2016. http://www.nusl.cz/ntk/nusl-241983.

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The aim of the thesis was design of reconnection-less and electronically reconfigurable filters of SISO type with non-traditional active elements. Adjustability of bandwidth or quality factor is also required. First part of the thesis deals with theoretical analysis of filters, their operation modes and design of frequency filters using Signal-flow graph method aswell. Last but not least, electronical reconfiguration of transfer function and parasitic analysis was discussed. Another part describes active elements used in the practical part of thesis. Behaviors and design of active elements usi

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23

Hartono, Aryudha. "Microgrid Safety and Protection Strategies." Thesis, KTH, Elektroteknisk teori och konstruktion, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-226593.

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One of the challenging issues with the Microgrid is that the bidirectional power flow providedby the distributed generator (DG) which modify the fault current level. Furthermore, theinverter based-renewable energy source (IB-RES) limits the total fault current contributionto the grid due to its thermal capability. Since Microgrid should be able to operate in gridconnectedand islanded mode, protection strategies are needed to solve this challenging issue.By only having IB-RES and battery storage system, the fault condition and normaloperation cannot be distinguished. Apart from fault clearing i

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24

Lefler, Filip. "Filtrační struktury neceločíselného řádu." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2016. http://www.nusl.cz/ntk/nusl-241989.

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Semestral thesis deals with fractional-order frequency filters. There is descripe proposal of the filter, their simulations and practical realizations. The first part is focused at the introduction to a frequency filters. The following is chapter which explore various proposals fractional-order frequency filters. The next chapter describes used activ elements in this thesis. Then there is briefly described a method of the signal flow graphs. The following is a description of the theoretical design of lowpass and highpass frequency filter, where order of the filter is between the first and seco

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25

Prát, Marek. "Návrh elektronicky rekonfigurovatelných filtračních struktur s moderními aktivními prvky." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2018. http://www.nusl.cz/ntk/nusl-377113.

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The aim of master's thesis was design of electronically reconfigurable filters. Adjustability of pole frequency or quality factor is possible. First part of thesis deals with theoretical analysis of filters, their operation modes, design of frequency filters using Signal-Flow graph method and parasitic analysis. The next part describes active elements used in thesis. In a third part, three reconfigurable filters are described and designed and their simulations and parasitic analysis are made. Last part deals with filter design in EAGLE and experimental measurement.

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26

Blengini, Neto Adolfo. "Ambiente multim?todos para otimiza??o de opera??es em sistemas de distribui??o de energia el?trica generalizados." Pontif?cia Universidade Cat?lica de Campinas, 2017. http://tede.bibliotecadigital.puc-campinas.edu.br:8080/jspui/handle/tede/926.

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Submitted by SBI Biblioteca Digital (sbi.bibliotecadigital@puc-campinas.edu.br) on 2017-03-23T14:50:03Z No. of bitstreams: 1 ADOLFO BLENGINI NETO.pdf: 3955942 bytes, checksum: 45ddc01c026b2c6b88359672fba01257 (MD5)<br>Made available in DSpace on 2017-03-23T14:50:03Z (GMT). No. of bitstreams: 1 ADOLFO BLENGINI NETO.pdf: 3955942 bytes, checksum: 45ddc01c026b2c6b88359672fba01257 (MD5) Previous issue date: 2017-02-16<br>Pontif?cia Universidade Cat?lica de Campinas ? PUC Campinas<br>This study proposes the development of an environment for optimization of the operations of electrical distribu

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Podeleski, Fabiana da Silva. "Recomposi??o de Sistema de Distribui??o de Energia El?trica por Modelo de Fluxo ?timo de Corrente." Pontif?cia Universidade Cat?lica de Campinas, 2017. http://tede.bibliotecadigital.puc-campinas.edu.br:8080/jspui/handle/tede/978.

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Submitted by SBI Biblioteca Digital (sbi.bibliotecadigital@puc-campinas.edu.br) on 2017-08-10T11:55:42Z No. of bitstreams: 1 FABIANA DA SILVA PODELESKI.pdf: 1801192 bytes, checksum: 27ac2ce1c17ed0cdfce39e602146bdc7 (MD5)<br>Made available in DSpace on 2017-08-10T11:55:42Z (GMT). No. of bitstreams: 1 FABIANA DA SILVA PODELESKI.pdf: 1801192 bytes, checksum: 27ac2ce1c17ed0cdfce39e602146bdc7 (MD5) Previous issue date: 2017-06-29<br>Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior - CAPES<br>This document proposes a new approach for the restoration of electric power distribution system

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Štork, Petr. "Návrh plně diferenčních kmitočtových filtrů s proudovými aktivními prvky za pomoci metody grafu signálových toků." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2014. http://www.nusl.cz/ntk/nusl-220632.

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This master’s thesis deals with designing of fully-differential current-mode frequency filters using signal-flow graphs method. The first part is focused on a general description of frequency filters, its function and division. Active elements that create these frequency filters, such as multi-output current follower (MO-CF), balanced or multi-output transconductance amplifier (BOTA, MOTA) and digitally adjustace current amplifier (DACA) are described in the following part. Next, problems and various techniques of designing such filters are discussed on a theoretic basis. In the remaining part

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29

Guerci, Philippe. "Current and new therapies for the critically injured microcirculation The macro- and microcirculation of the kidney Endothelial dysfunction of the kidney in sepsis. Section 15: Infectious Diseases and Sepsis, Chapter 89 Impact of fluid resuscitation with hypertonic-hydroxyethyl starch versus lactated ringer on hemorheology and microcirculation in hemorrhagic shock Glycocalyx Degradation Is Independent of Vascular Barrier Permeability Increase in Nontraumatic Hemorrhagic Shock in Rats Glycocalyx shedding during stepwise hemodilution and microvascular permeability A LED-based phosphorimeter for measurement of microcirculatory oxygen pressure The role of bicarbonate precursors in balanced fluids during haemorrhagic shock with and without compromised liver function Effects of N-acetylcysteine (NAC) supplementation in resuscitation fluids on renal microcirculatory oxygenation, inflammation, and function in a rat model of endotoxemia Effect of Polyethylene-glycolated Carboxyhemoglobin on Renal Microcirculation in a Rat Model of Hemorrhagic Shock Resuscitation with PEGylated carboxyhemoglobin preserves renal cortical oxygenation and improves skeletal muscle microcirculatory flow during endotoxemia." Thesis, Université de Lorraine, 2020. http://www.theses.fr/2020LORR0053.

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Au cours des 20 dernières années, la microcirculation a été considérée comme la pierre angulaire du développement de la défaillance d’organe chez les patients critiques. De toute évidence, la microcirculation est devenue une cible thérapeutique. En raison de la complexité de la microarchitecture de ce système fonctionnel, variant d'un organe à l'autre, une thérapie ne peut pas «convenir pour tout». Les altérations observées dans la microcirculation sevèrement endommagée sont de 3 ordres: (i) le contenant défini par les différentes couches de la paroi vasculaire, y compris les cellules endothél

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Sobotka, Josef. "Aplikační možnosti programovatelného zesilovače LNVGA." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2015. http://www.nusl.cz/ntk/nusl-220430.

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This thesis deals with the theoretical description of the qualitative characteristics and parameters of some modern active elements, also discusses the theory of signal flow graphs at the level applicable for the following frequency filter design methods. The thesis is also generally discussed the issue with the circuit simulator PSpice modeling theory and voltage amplifiers on the basic 6-levels. The practical part of the work is divided into two parts. The first practical part is dedicated to design four levels of simulation model of components LNVGA element. The second practical part contai

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Lin, Wei-Cheng, and 林煒程. "Numeric Simulation of The Density Current Transport by FlOW-3D model." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/35698408615872765522.

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碩士<br>長榮大學<br>土地管理與開發學系碩士班<br>99<br>Although average annual rainfall reaches as high as 2,500 mm in Taiwan, building water reservoirs are indispensable for water storage because of highly steep hills and mountains, short length of rivers and streams featuring torrents and rainfall concentration during Taiwan Spring rain season and typhoons. There usually create density currents after water flows landed with high density of sand flood into water reservoirs. The frontal flow of density currents will cause turbidity currents and surge currents, disturbing the sediment mud composed of fine sand in

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Hogan, Kevin J. "A Mechanistic Model for Flooding in Vertical Tubes." 2009. http://hdl.handle.net/1969.1/ETD-TAMU-2009-08-7008.

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In a counter-current two-phase flow system, flooding can be defined as the onset of flow reversal of the liquid component which results in an upward co-current flow. Flooding in the surge line of pressurized water reactors poses a significant technical challenge in the analysis of several postulated nuclear reactor accident scenarios. Despite the importance of flooding in these analyses, previous work does not identify a universally accepted rigorous physics-based model of flooding, even for the simple case of flooding in adiabatic, vertical tubes. This can be attributed to a lack of conclusiv

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Zhan, Tung-Sheng, and 詹東昇. "Application of the Current-Based Network Model in Transmission System Load Flow Study." Thesis, 1999. http://ndltd.ncl.edu.tw/handle/61944617428238536846.

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碩士<br>國立中山大學<br>電機工程學系<br>87<br>The load flow analysis (commonly called load flow or power flow) is the basic tool for investigating power system state variables, and it is a very important part of the system supervisory, planning and optimal operation. And, it is a set of nonlinear algebra equation that can be solved by using the computer programming, matrix operation, and numerical analysis methods. There are lots of algorithms, for instances, Newton-Raphson Method, Fast Decoupled Method etc., were proposed to improve the execution efficiency and the convergence characteristics of the power

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Shan, Y., S. Huang, C. Liu, Yakun Guo, and K. Yang. "Prediction of the depth-averaged two-dimensional flow direction along a meander in compound channels." 2018. http://hdl.handle.net/10454/16549.

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Abstract:

Yes<br>For overbank flows in meandering channels, the flow direction along a meander varies and is affected by floodplain vegetation. This study proposes a model for predicting the depth-averaged two-dimensional flow direction (depth-averaged flow angle) along a meander in smooth and vegetated meandering compound channels. Laboratory experiments were performed in smooth and vegetated channels. Measurements show that the height of the secondary current cell in the main channel is increased by dense floodplain vegetation comparing with that in a non-vegetated channel. A method of determining the

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Adam, Robert. "Beitrag zur thermischen Dimensionierung von Niederspannungs-Schaltgerätekombinationen." 2018. https://tud.qucosa.de/id/qucosa%3A36402.

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Abstract:

In der Niederspannungstechnik werden die Anlagen zum Übertragen und Verteilen von Elektroenergie als Niederspannungs-Schaltgerätekombinationen bezeichnet. Die Anlagen sollen ihre Aufgaben möglichst wartungsfrei über einen Zeitraum von mehreren Jahrzehnten erfüllen. Damit ein langzeitstabiler Betrieb der Niederspannungs-Schaltgerätekombinationen möglich ist, müssen die Anlagen mindestens normgerecht thermisch dimensioniert sein. Um die Erwärmung von Niederspannungs-Schaltgerätekombinationen zuverlässig und effizient zu berechnen, wird in dieser Arbeit die Wärmenetzmethode genutzt. In der Wärmen

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