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wt Werkstattstechnik online

Alle Ausgaben: wt Werkstattstechnik online

wt Jahrgang 107 (2017) Heft 05 ISSN Online: 1436-4980

Treffer in den folgenden Teilen:

S. Bolte, A. Zibart, C. Henkenius, J. Prof. Böcker, E. Prof. Kenig, H. Figge Wassergekühltes On-Board-Ladegerät mit optimiertem Kühlkanal/Water-cooled on-board charger with optimized cooling channel S. 381-385

„… Wärmeleitwege kurz gehalten werden. Mittels CFD-Untersuchungen erfolgte zudem eine Optimierung der Krümmerradien …” „… Ergebnisse der CFD-Untersuchungen Alle CFD-Untersuchungen wurden mit der kommerziellen Software STAR-CCM …” „… Sägezahnrippe FVT, Universität Paderborn Bild 5. a) Vorgenommene Vereinfachungen für die CFD-Untersuchungen, b …”

doi.org/10.37544/1436-4980-2017-05

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agrarzeitung

Alle Ausgaben: agrarzeitung

agrarzeitung Jahrgang 78 (2023) Heft 23 ISSN Online: 1869-9707

Treffer in den folgenden Teilen:

Bernhard Vetter Widerstand gegen EU-Stromplan S. 5

„… werden, sol-len sie nach den Plänen der EUmittels Differenzkontrakten (Con-tracts for Difference – CfD …” „… . BeihilfenEin Gutachten der Kanzlei RaueimAuftragdesBEEkommt jetzt zudem Schluss, dass die Einführungvon CfD …” „… ist.BEE-Präsidentin Simone Petersagte: „CfD halten wir insgesamtfür ein untaugliches Instrument,um eine vollständig …”

doi.org/10.51202/1869-9707-2023-23

Matthias Kunick - Fast Calculation of Thermophysical Properties in Extensive Process Simulations with the Spline-Based Table Look-Up Method (SBTL)

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Matthias Kunick

Fast Calculation of Thermophysical Properties in Extensive Process Simulations with the Spline-Based Table Look-Up Method (SBTL)

Reihe: Energietechnik

Band 618 2018

Treffer in den folgenden Teilen:

Introduction S. 1-3

„… (CFD), heat cycle calculations, and real-time process optimizations are indispensable tools for power …” „… density based CFD solvers, property functions of specific volume and specific internal energy (v,u), as …” „… corresponding fundamental equation. This is computationally expensive and therefore inappropriate for CFD. In …”

Summary and Outlook S. 114-117

„… Dynamics (CFD), power-plant design with heat cycle calculations, and real-time process optimizations. In …” „… functions of (v,u) and (p,h), which are frequently used in CFD and in heat cycle calculations, must be …” „… an equation for the isobaric heat capacity of the ideal gas, are often used in CFD. However …”

Titelei/Inhaltsverzeichnis

„… -mal schneller. Die Anwendbarkeit des SBTL Verfahrens wird im CFD-Code TRACE, entwickelt am Deutschen …” „… computationally extensive process simulations, such as Computational Fluid Dynamics (CFD), heat-cycle calculations …” „… non-commercial software products for CFD, heat-cycle calculations, and simulations of non-stationary processes …”

References S. 153-162

„… ., Kügeler, E.: Recent Progress in the hybrid-grid CFD simulation of turbomachinery flows, ISABE (2007 …” „… ). [69] Becker, K., Heitkamp, K., Kügeler, E.: Recent progress in a hybrid-grid CFD solver for …” „… turbomachinery flows. Proceedings Fifth European Conference on Computational Fluid Dynamics ECCOMAS CFD (2010 …”

Application of the SBTL Method in Computationally Expensive Process Simulations S. 107-113

„… Dynamics (CFD), SBTL property functions of (v,u) based on IAPWS-IF97 (see Sec. 5.1) have been implemented …” „… into the density-based CFD software TRACE [68, 69]. This part of the work was carried out in a joint …” „… ]. In comparison to the direct IAPWS-IF97 implementation, the computing times of the CFD simulations …”

SBTL Property Functions Based on IAPWS-95 for Water and Steam S. 95-100

„… (perm), are given in Tables 33 through 36. The permissible values were set by the IAPWS Task Group “CFD …” „… values were set by the IAPWS Task Group “CFD Steam Property Formulation” to ensure that the differences …”

Property Calculation Algorithms for Numerical Process Simulations S. 4-49

„… model is well established in CFD and other extensive numerical process simulations. In many situations …” „… applied in CFD simulations. A comparative study of the computing times is given in Sec. 2.5.3. 2.2 …” „… , for instance in CFD, the requirements regarding numerical consistency of the applied property …”

SBTL Property Functions Based on IAPWS-IF97 for Water and Steam S. 79-94

„… calculations from (v,u) and (u,s). 5.1.4 Derivatives The following derivatives are frequently required in CFD …” „… ., to prepare a Jacobian matrix in CFD. However, any thermodynamic property where high accuracy is …” „… Group “CFD Steam Property Formulation” to ensure that the differences in the results of process …”

The Spline-Based Table Look-Up Method (SBTL) S. 50-70

„… state points are calculated in the vapor region and the two-phase region only, such as in CFD …”

doi.org/10.51202/9783186618061

VDI Wissensforum GmbH - Dritev – Drivetrain For Vehicles 2018

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VDI Wissensforum GmbH (Hrsg.)

Dritev – Drivetrain For Vehicles 2018

Reihe: VDI-Berichte

Band 2328 2018

Treffer in den folgenden Teilen:

M. Behzad, V. Saxena, M. Schaefer Thermal-hydrodynamic optimization of grooves in a wet clutch

„… , Ketsch 1 Abstract In this study, a three dimensional detailed CFD analysis is performed to …” „… orientations on the ATF flowrate and its heat transfer performance are throughly studied. The CFD results show …” „… detailed flow physics. In this study, 3D CFD simulations of air-ATF two-phase flow in a grooved clutch …”

R. Bredtmann, M. Beck, O. Mühlfeld, K. Olesen, O. Shajarati Robust multi-chip power module for effective integration to automotive powertrains – Danfoss DCM™1000 meets future automotive requirements

„… modules using CFD, NAFEMS seminar „CFD-Methoden zur Simulation des Wärmeübertragungsverhaltens“ 22. - 23 …” „… channels that guide the coolant along the surface to be cooled. Fig. 2: The bypass [13]. CFD …” „… . VDI-Berichte Nr. 2328, 2018 7 Fig. 3: CFD simulations on a family of meander channel geometries, without …”

C. Ahn Churning oil path optimization process development – Application of moving particle simulation method to design process

„… getting more important during the design stage. However, CFD simulation not only takes long computing …”

J. van der Meer, G. Hangen, J. Uhlig The new plug-in hybrid module as an addition to the AUDI S tronic gearbox family – Design, layout and manufacture

„… taken to keep pressure loss to a minimum through 360° circulation. With the aid of CFD simulation, the …”

doi.org/10.51202/9783181023280

VDI Wissensforum GmbH - International Conference on Gears 2017

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VDI Wissensforum GmbH (Hrsg.)

International Conference on Gears 2017

Reihe: VDI-Berichte

Band 2294 2017

Treffer in den folgenden Teilen:

F. Concli, C. Gorla Numerical modeling of the churning power losses of gears: an innovative 3D computational tool suitable for planetary gearbox simulation S. 881-892

„… ], Hill et al [12] and Gorla et al [13] applied computational fluid dynamic (CFD) for such purposes. The …” „… results of different researches have shown the effectiveness of the CFD approach for the characterization …” „… significant computational effort has represented a substantial limitation to the wide diffusion of the CFD …”

B. Bauer, R. Hambrecht, A. Kube Thermal analysis and optimization of gearboxes by simulation S. 917-926

„… a CFD-Simulation VDI-Berichte Nr. 2294, 2017 921 cover. To modify the surface, which means to …” „… The state-of-the-art numerical approach is the computational fluid dynamics (CFD). This method is …” „… capable of closing the gap between calculated and measured gearbox temperatures. With CFD it is possible …”

A. Mihailidis, G. Korbetis, N. Drivakos, I. Nerantzis Finite element method based analysis of planetary gear systems considering backlash and manufacturing deviations S. 75-82

„… . In the remaining areas of the model, the “CFD – algorithm” was used to generate a smooth and fast …”

doi.org/10.51202/9783181022948

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