Search results: Found 7

Listing 1 - 7 of 7
Sort by
Hydrodynamic processes at the water-sediment interface of streambeds

Author:
Book Series: Dissertationsreihe am Institut für Hydromechanik der Universität Karlsruhe / Universität Karlsruhe (TH), Institut für Hydromechanik ISSN: 14394111 ISBN: 9783866442443 Year: Volume: 2008/1 Pages: IV, 153 p. DOI: 10.5445/KSP/1000008267 Language: GERMAN
Publisher: KIT Scientific Publishing
Subject: General and Civil Engineering
Added to DOAB on : 2019-07-30 20:02:00
License:

Loading...
Export citation

Choose an application

Abstract

Simultaneous 2D pressure and 2D velocity information at the rough water-sediment interface of streambeds were gained by a newly developed measurement setup. In the bed the pressure fluctuations decay exponentially within the first 1-2 equivalent sand roughnesses. Structural findings concerning coherent flow structures are consistent with models originally developed for smooth walls. A significant bed destabilizing flow-pressure pattern was identified for the first time.

Untersuchung zum effizienten Betrieb von Hydraulikzylindern in Konstantdrucksystemen unter Verwendung einer Zwischendruckleitung

Author:
Book Series: Karlsruher Schriftenreihe Fahrzeugsystemtechnik / Institut für Fahrzeugsystemtechnik ISSN: 18696058 ISBN: 9783731502951 Year: Volume: 28 Pages: XXI, 161 p. DOI: 10.5445/KSP/1000043836 Language: GERMAN
Publisher: KIT Scientific Publishing
Subject: Technology (General)
Added to DOAB on : 2019-07-30 20:02:01
License:

Loading...
Export citation

Choose an application

Abstract

A constant pressure system with discrete pressure potentials is investigated for efficient actuation of hydraulic cylinders. These pressure potentials are created using an intermediate pressure line. Two switch valves can combine high- intermediate- and tank pressure in order to enable multiple pressure potentials at the controlling porportional valve.

Energieeffizienz von Konstantdrucksystemen mit sekundärgeregelten Antrieben beim Einsatz in mobilen Arbeitsmaschinen

Author:
Book Series: Karlsruher Schriftenreihe Fahrzeugsystemtechnik / Institut für Fahrzeugsystemtechnik ISSN: 18696058 ISBN: 9783731503774 Year: Volume: 35 Pages: XXV, 163 p. DOI: 10.5445/KSP/1000047003 Language: GERMAN
Publisher: KIT Scientific Publishing
Subject: Technology (General)
Added to DOAB on : 2019-07-30 20:01:59
License:

Loading...
Export citation

Choose an application

Abstract

Within this work, it is investigated under which conditions constant pressure systems with secondary controlled drives may be an energetic efficient and cost effective alternative to established mobile hydraulic circuit configurations. For this purpose, a methodology is introduced to evaluate chances and risks at employment of this technology in mobile machines. A demonstrator with three secondary controlled variable displacement drives is developed to confirm the results of the methodology.

Metallmatrixverbunde mit Verstärkungselementen aus metallischem Glas Ni??Nb??Ta?? – Herstellung und Charakterisierung

Author:
Book Series: Schriftenreihe des Instituts für Angewandte Materialien, Karlsruher Institut für Technologie ISSN: 21929963 ISBN: 9783731507826 Year: Volume: 75 Pages: XVI, 402 p. DOI: 10.5445/KSP/1000081432 Language: GERMAN
Publisher: KIT Scientific Publishing
Subject: Technology (General)
Added to DOAB on : 2019-07-28 18:37:01
License:

Loading...
Export citation

Choose an application

Abstract

AlSi12-based metal matrix composites using metallic glass Ni??Nb??Ta?? as reinforcement were produced via gas pressure melt infiltration technique. Comprehensive investigations were performed to determine the composite´s microstructural, mechanical and thermal properties as well as damage mechanisms. The results contribute to a better understanding on the material´s processing-structure-property relations.

Bestimmung zeitabhängiger Blutdruckfelder aus Strömungsdaten der Magnetresonanztomographie

Author:
ISBN: 9783731503354 Year: Pages: VII, 208 p. DOI: 10.5445/KSP/1000045315 Language: GERMAN
Publisher: KIT Scientific Publishing
Subject: Computer Science
Added to DOAB on : 2019-07-30 20:02:02
License:

Loading...
Export citation

Choose an application

Abstract

In cardiovascular diagnostics, blood pressure computation from flow data acquired by magnetic resonance imaging is considered promising. Accordingly, this work describes a method for the computation of complete spatiotemporal blood pressure fields in the human aorta. Key issues are the robust pressure computation from noisy input data, the application of regularized blood flow models, the combination of spatial and temporal blood pressure information, and the experimental evaluation.

Modellierung der Stoffübertragung beim Niederdruckcarbonitrieren mit Ammoniak und Acetylen

Author:
Book Series: Schriftenreihe des Instituts für Angewandte Materialien, Karlsruher Institut für Technologie ISSN: 21929963 ISBN: 9783731505686 Year: Volume: 63 Pages: XXVIII, 159 p. DOI: 10.5445/KSP/1000057840 Language: GERMAN
Publisher: KIT Scientific Publishing
Subject: Technology (General)
Added to DOAB on : 2019-07-30 20:02:02
License:

Loading...
Export citation

Choose an application

Abstract

A mathematical model has been developed for the description of the transport process for low-pressure carbonitriding with ammonia and acetylene. As an example the case hardening steel 18CrNi8 was used. It can be shown that the concentration profiles of carbon and nitrogen as well as the ammonia exhaust gas concentration are described well. Based on the modelling, first simulation runs could be carried out for further optimization of the heat treatment process.

Entwicklung eines druckgetriebenen dynamischen Kolonnenmodells zur Erhöhung der Flexibilität von kryogenen Luftzerlegungsanlagen

Author:
ISBN: 9783731507604 Year: Pages: VIII, 175 p. DOI: 10.5445/KSP/1000080378 Language: GERMAN
Publisher: KIT Scientific Publishing
Subject: Technology (General)
Added to DOAB on : 2019-07-28 18:37:01
License:

Loading...
Export citation

Choose an application

Abstract

Driven by market signals, energy consumers are motivated to adapt their grid load. Due to their cryogenic storage capacity, air separation units can efficiently be used for load shifting. Such an operation leads to new challenges for plant operation and control. The developed pressure-driven dynamic column model is used to investigate load-flexible operation.

Listing 1 - 7 of 7
Sort by
Narrow your search

Publisher

KIT Scientific Publishing (7)


License

CC by-sa (6)

CC by-nc-nd (1)


Language

german (7)


Year
From To Submit

2018 (2)

2016 (1)

2015 (2)

2014 (1)

2008 (1)