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

Matthias Kunick

Reihe: Energietechnik

Band 618 2018

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

„… 50 3 The Spline-Based Table Look-Up Method (SBTL) The Spline-Based Table Look-Up method (SBTL …” „… polynomial can better reproduce the transformed function. 54 3 The Spline-Based Table Look-Up Method (SBTL …” „… Table Look-Up Method (SBTL) 3.2 Two-Dimensional Spline Functions 3.2.1 Spline Functions A …”

Titelei/Inhaltsverzeichnis S. I-XIV

„… Spline-Based Table Look-Up Method (SBTL) Fast Calculation of Thermophysical Properties in Extensive Process …” „… Simulations with the Spline-Based Table Look-Up Method (SBTL) Submitted to the Faculty of Mechanical …” „… Spline-Based Table Look-Up Method (SBTL) Dipl .-Ing. ( FH ) Matthias Kunick, Görl itz Energietechnik Nr. 618 …”

Introduction S. 1-3

„… , table look-up methods are frequently applied for fast and accurate property calculations. For these …” „… this task group, the Spline-Based Table Look-Up method (SBTL) is proposed in this work. The SBTL …” „… are stored in look-up tables. During the process simulation, properties are determined from these …”

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

„… . 2.4 Table Look-Up Methods To calculate fluid properties with reasonable accuracy but with short …” „… computing times, socalled table look-up methods are frequently applied. For these methods, the desired fluid …” „… with functions of the form 1 2,z x x . The basic principles of several table look-up methods for …”

Summary and Outlook S. 114-117

„… and Outlook 115 Table look-up methods are a fast and accurate alternative for property calculations …” „… . The accuracy of a table look-up method can be controlled by the number and the distribution of the …” „… tabulated data points. Furthermore, table look-up methods can be flexibly applied to various property …”

References S. 153-162

„… ] Pini, M., Spinelli, A., Persico, G., Rebay, S.: Consistent look-up table interpolation method for …” „… Spline-Based Table Look-Up Method (SBTL) (2015), available at http://www.iapws.org. [62] Kunick, M …” „… ., Harvey, A.H.: Fast Calculation of Steam and Water Properties with the Spline-Based Table Look-Up Method …”

Bicubic Spline Functions for the Thermodynamic Potential s(v,u) for Water and Steam S. 101-106

„… discussed in Sec. 2.4.3. Table look-up methods providing full thermodynamic consistency have been described …” „… ) spline functions are given in Tables A11 and A12 in Appendix A11. Nodes outside the range of validity …” „… properties are given in Table 40. x = 0 u = 2000 kJ/kg vapor spinodal li q u id sp in o d al 7.2 Property …”

doi.org/10.51202/9783186618061

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Plastics in Automotive Engineering 2017

VDI Wissensforum GmbH (Hrsg.)

Reihe: VDI-Berichte

Band 4348 2017

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R. Kurz, S. Hobelsberger, H. Auer Sewn-covering lamination for the instrument panel: from the discontinuous to the continuous process S. 13-20

„… best look and feel for the automotive interior. A process which originally took more than ten minutes …” „… materials, new looks and a more exclusive feel. Buzzwords such as pressure and touch haptics, or tactile …” „… technologies in which the surfaces are produced by complex methods. Today, therefore, physical comfort, an …”

J. Guenther, D. Malecha, J. Reinicke New surfaces and difficulties in applying existing test methods S. 45-56

„… materials and a usual overspray of up to 80% with the painting technique, the PUR method in the best case …” „… New surfaces and difficulties in applying existing test methods Dipl.-Ing. J. Guenther …” „… qualification and testing of new surfaces in the form of test methods for automotive OEMs, taking the example …”

doi.org/10.51202/9783182443483

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International Conference on Gears 2019

VDI Wissensforum GmbH (Hrsg.)

Reihe: VDI-Berichte

Band 2355 2019

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D. Mevissen, C. Lopenhaus, T. Bergs Calculation of mixed friction conditions in large-scale rolling-sliding contacts for different surface structures S. 555-568

„… micro VDI-Berichte Nr. 2355, 2019 555 scale is transferred to the macro scale by look-up tables, such …” „… integrated by look-up tables, such as regression equations for fluid film thickness. However, the …” „… level [3, 11]. From the calculation result, a look-up table is derived regarding the influence of the …”

J. Neufond, E. Rigaud, J. Perret-Liaudet, A. Carbonelli Influence of tooth profile modifications on the dynamic behavior of a planetary gear set – Experimental investigation and numerical validation for different amplitudes of tooth profile modifications S. 765-776

„… the planetary gear set are given in Table 1. Table 1: Main characteristics of the planetary gear …” „… planets have with tip relief corrections, described in table 2. VDI-Berichte Nr. 2355, 2019766 Both …” „… and clockwise input rotation. - Table 2: Tip relief corrections: X the tip relief amplitude, ϕ …”

E. Lothman, L. Kamjou, E. Claesson Gear performance beyond current standards – Implementing increased material fatigue performance in gears S. 915-924

„… ). Table 1: Steel comparison 18CrNiMo7-6 18CrNiMo7-6 Bar size Casting method C Mn Si S Cr Ni Mo Reference …” „… reference. Table 3: Steel comparison 20MnCr5 20MnCr5 Casting method C Mn Si S Cr Ni Mo O (ppm) Reference …” „… approach is to look at standards such as the ISO 6336-5, to understand what steel properties to alter to …”

J. Cathelin Material data for advanced plastic gear simulation S. 1335-1344

„… methodology which not only minimizes the influence of the test set up but also better resembles actual gear …” „… material data listed in Table 1. The accuracy of the workflow prediction is strongly dependent on the …” „… : Plastic cylindrical gear predictive engineering workflow Table 1: Gear material data for …”

H. Baour, P. Falbriard Micro skiving – (r)evolution of a known production process S. 1619-1634

„… many years. Several manufacturers and suppliers propose tools and machines for this operation. Up to …” „… now, production of parts with module lower than 0.5000 wasn’t possible with that method. Evolution …” „… explains Power-Skiving process’ details, principle that is also valid for the Micro-Skiving method. It …”

B. Karpuschewski Detection of surface damages by non-destructive micromagnetic methods S. 1027-1038

„… Detection of surface damages by non-destructive micromagnetic methods Prof. Dr.-Ing. habil …” „… Abstract The analysis of the Barkhausen noise signal is a non-destructive micromagnetic method to detect …” „… grinding damages, such as grinding burn. This method is increasingly used in industrial production for …”

B. Gierl, D. Drummer spur gears S. 1367-1378

„… material characteristics and it is shown that a reduction in tooth wear up to 50 % is possible …” „… thermal, mechanical and tribological properties [5]. Internal and external material modification methods …” „… , it is important for a successful design process to look at all possibilities for improving the …”

doi.org/10.51202/9783181023556

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ELIV-MarketPlace 2022

VDI Wissensforum GmbH (Hrsg.)

Reihe: VDI-Berichte

Band 2405 2022

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M. Thierer Robust control strategies – Approaching parameter uncertainties for traction drive systems and DC/DC-converters in automotive HV applications S. 109-120

„… not change – only the look-up tables of the system description change. However, all disciplines that …” „… deliver required system look-up tables for early Model-in-the-Loop (MiL) tests. The following figure shows …” „… model based development techniques. The principles of the mentioned methods are outlined below …”

A. Berger An Advanced High-Efficiency Inverter with High Switching Frequencies to Improve Powertrain Efficiency and Performance S. 85-98

„… losses of a converter vs. switching frequency under full-load condition [4] A new method of materially …” „… eliminating switching losses is presented. This method is based on a strategy known as Zero Voltage Switching …” „… (ZVS), which leads to soft-switching. Two classes of the ZVS method are presented in the literature: (1 …”

doi.org/10.51202/9783181024058

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Grid-based Environment Estimation for Local Autonomous Vehicle Navigation

Georg Tanzmeister

Reihe: Mess-, Steuerungs- und Regelungstechnik

Band 1246 2016

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Configuration Space Costs: Cost Evaluation on Workspace Cost Maps S. 64-86

„… requires expensive arcsin and arccos computations inside the loop or the use of look-up tables. On the …” „… , the check of a complete configuration reduces to a single point check or array look-up. Often in the …” „… a single look-up. The only work found that deals with the calculation of the configuration space …”

Detection of Principal Moving Directions S. 40-63

„… constraints are to be considered, the amount of pre-calculation and the size of the look-up tables grow …” „… Trees (RRT) [95, 96] are another popular family of planning methods. In the RRT algorithm, a tree is …” „… many combinations of A* and RRT exists. In roadmap based methods, RRTs are used to construct the …”

Grid-based Tracking and Mapping S. 10-39

„… cells rather than having a list of objects which implies making assumptions of how objects look like or …” „… up front seems to be blocked by a static obstacle. If the map is updated with a sensor that cannot …” „… velocities, which is expensive. Although, it can be speeded-up by using an existing map of the environment …”

doi.org/10.51202/9783186246080

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Rethinking the circular economy for plastics

VDI (Hrsg.)

Reihe: Blaue Papiere

Band 05/2023 2023

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Introduction S. 1-7

„… 1 VDI । The VDI Round Table white paperIntroductionGlobal consumption of raw materials is …” „… ecosphere end up in the environment at the end of their lives as untreated, steadily growing quantities of …” „… industry. 2 VDI । The VDI Round Table white paperfor ecological but also for economic reasons (cf …”

Field of Action 4 Designing products for a circular economy S. 53-56

„… 53 VDI । The VDI Round Table white paperField of action 4Designing products for a circular …” „… for reprocessing into high-quality recyclates. 54 VDI । The VDI Round Table white paperNew …” „… , too, requires a change: up to now, materials have mainly been geared towards their application. To …”

Field of Action 3 Creating regulatory incentives for a circular plastics economy S. 35-52

„… Round Table white paperadvantages and disadvantages are weighed up against each other. With this …” „… 35 VDI । The VDI Round Table white paperUntil recyclates of the appropriate quality are …” „… technology with polymer-specific analysis methods, new business models or innovative methods of mechanical …”

Field of Action 2 Making closing the loop the task of all stakeholders S. 14-34

„… 14 VDI । The VDI Round Table white paperField of action 2Making closing the loop the task of …” „… respective actors at each of the eight stages. As in the VDI Round Table dialogue process, the discussion …” „… । The VDI Round Table white paperThe chemical industry has a key position for circular value creation as …”

doi.org/10.51202/9783949971402

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LAND.TECHNIK AgEng 2023

VDI Wissensforum GmbH (Hrsg.)

Reihe: VDI-Berichte

Band 2427 2023

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J. Vanlerberghe, Y. Li, D. Jongmans, T. Mahieu, B. Missotten Automatic Closed-Loop Chop Quality Control Based on Camera Images on a Combine Harvester S. 131-138

„… sensor in the feeder of the combine. Based on a predefined look-up table the configuration of the counter …” „… consumption. The downside of this open-loop type system is that it is only as good as the look-up table and is …” „… even stack up on the stubble, causing them to not have ground contact which has them decomposing even …”

R. Schmetz Methodical redesign of drivetrains of agricultural machinery S. 301-312

„… all solution finding methods of the classic design methodologies and the systematic questioning of …” „… emanating from this ground of facts has meanwhile picked up speed. VDI-Berichte Nr. 2427, 2023 3012 …” „… design methodologies to a (first layer) Methodical Redesign Approach (MRA). This MRA has not only been …”

T. Blume, L. Neumann Self-supervised learning for an agriculture driver assistant system S. 471-476

„… stations and real-time corrections.  Look up Tabel: The relative position can be adjusted based on the …” „… in Table 1 the self-supervised method is lower by 6% mIoU (mean intersection over union) absolutely …” „… method for pixel wise classification of camera images. Precise labels are necessary to obtain accurate …”

M. Hengst, T. Herlitzius, H. Fichtl, I. Mai, K. Ludwig Field Tests with the Modular and Scalable Tillage Systems Feldschwarm S. 555-XXII

„… navigation methods with the aid of reference stations with fixed coordinates. The accuracy can be up to 2 cm …” „… throughout the test period: Table 1: Test machines Type/ Manufacturer Technical Parameters (acc. data sheet …” „… Kinematic positioning a method for the precise determination of position coordinates using satellite …”

doi.org/10.51202/9783181024270

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Automation 2023

VDI Wissensforum GmbH (Hrsg.)

Reihe: VDI-Berichte

Band 2419 2023

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R. Hana, T. Kleinert Semantic models in process monitoring – Semantic models for field device performance monitoring in the process industry in the context of industry 4.0 S. 233-244

„… biggest problem currently related to this method is the engineering effort needed to set up such a system …” „… as an output to the device as a health status code. Technicians can look the codes up using the …” „… as the documentation of the plant is kept up to date. The configuration of the field devices can also …”

H. Ouni, R. Tan, M. Gärtler, C. Song Comparison of various Dynamic Time Warping approaches for analysis of time series data from batch processes S. 819-834

„… https://paperswithcode.com/method/dtw collect usage and reference data, but up to our best knowledge, there is no common benchmark for …” „… the impact of parame-ter tuning on these methods. We focus on the implementation in forms of python …” „… zu bewerten. Einige Websites wie https://paperswithcode.com/method/dtw sammeln Nutzungs- und …”

B. C. Gül, N. Devarakonda, D. Dittler, N. Jazdi, M. Weyrich Using Federated Learning in the Context of Software-Defined Mobility Systems for Predictive Quality of Service S. 591-610

„… technology, current vehicles have up to 50 sensors [3] and 150 Electronic Control Units (ECUs) [4] and …” „… , such as text, photo, or video. Even if there are privacy-preserving methods in the literature to …” „… method and metric. This is because each method has its own advantages and disadvantages and protects …”

K. O. Oladipupo, S. Käbisch, C. Diedrich Integration Concept of PROFIBUS and PROFINET devices into Asset Administration Shell using Asset Interface Description submodel S. 259-278

„… Description Mark-up Language (GSDML) [6] and Electronic Device Description (EDD) [7] for device integration …” „… section presents the methods of defining PROFI-BUS/PROFINET device parameters, services, and events in AID …” „… methods in process automation and IIoT in general is presented. 2.2 Field Device Integration (FDI) One of …”

doi.org/10.51202/9783181024195

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Commercial Vehicles 2019

VDI Wissensforum GmbH (Hrsg.)

Reihe: VDI-Berichte

Band 2350 2019

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K. Feyerabend Over The Air Software Updates for commercial vehicle trailers – How to ensure latest software in all trailer ECUs S. 231-242

„… major passenger car OEMs. Also the commercial vehicle industry is expected to pick up this trend. This …” „… vehicle. That way, almost zero downtime can be achieved. While A/B swap may look like the best choice …” „… the active executable is often not possible. Finally, ECUs manufacturers need to look after each …”

G. Milton, H.-M. Koegeler, R. Varnhagen Validating the fuel consumption of trucks featuring a dynamic electronic horizon in real world traffic: methods and results S. 149-174

„… method’ was used to check whether additional terms of a polynomial model, up to a maximum 5th order …” „… traffic: methods and results Dr. Gareth Milton, Ricardo UK Ltd, Shoreham-by-Sea, UK; Dr. Hans-Michael …” „… enabled by dynamic electronic horizon under consistent situations. This paper presents a proposed method …”

A. Danninger, E. Armengaud, N. Knopper Implementation of Powertrain control for economic, low real driving emissions and fuel consumption – Measures for Fuel consumption reduction in Long Haul traffic S. 293-312

„… hills or traffic jams and the resulting tailoring of the control strategies up to activation or …” „… control. The starting point for this analysis was to search for use cases in which look ahead information …” „… . 11) gives valuable insights in how the formulation of the sub problems may look like. It is shown …”

doi.org/10.51202/9783181023501

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Plastics in Automotive Engineering 2016

VDI Wissensforum GmbH (Hrsg.)

Reihe: VDI-Berichte

Band 4343 2016

Treffer in den folgenden Teilen:

I. Kleba, J. Emig Innovative PUR surfaces – self-healing and more S. 29-44

„… with injection molding. For components in the piano-black look this last offers an interesting …” „… ® accessible even to exterior applications - up to and including bionic functional surfaces. 1. We as …” „… , hard-looking surface which is also retained up to a certain level of force applied from outside. If the …”

F. Schumann, R. Ankele, F. Jürgens, H-J. Endres The innovative hybrid fleece molding (HFM) concept as a sustainable alternative in direct comparison with the door panel for the Volvo XC90 S. 213-224

„… methods and data basis. 219 Table 1: General information about the different door panels …” „… innovative properties but also composite materials, composite designs and hybrid construction methods will …” „… saved with comparatively manageable 'rethinking' is hybrid fleece molding (HFM) which we shall look at …”

J. J. Laux, H. Moore, J. Ingram, J. Kowalski Class A Compression-Molded Carbon-Fiber Hood – Development and production of the Cadillac ATS-V and CTS-V Hood S. 59-66

„… using numerous material characterization methods such as tensile and compressive testing at room, hot …” „… with an automated process, the development of an End of Arm Tool (EoAT) for achieving both pick-up and …” „… EoAT. The need for picking-up and preforming the 2D blank was addressed in the design of the EoAT …”

doi.org/10.51202/9783182443438

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OPE Journal

Alle Ausgaben: OPE Journal

OPE Jahrgang 12 (2022) Heft 41 ISSN Online: 2366-8040

Treffer in den folgenden Teilen:

“Our dies have the reputation of being the best in the world” S. 18-20

„… the same die can be used to coat different products, different coating methods or single or …” „… developing future-proof technologies. One example is IMEC Belgium, which is using a TSE TableCoater Maick …” „… for Organic & Printed Electronicsand slot dies to improve the efficiency and scale-up process of …”

doi.org/10.51202/2366-8040-2022-41

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Autonomous Systems 2018

Maria M. Kubek (Hrsg.), Zhong Li (Hrsg.)

Reihe: Informatik/ Kommunikation

Band 862 2018

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S. Widmann fastAN(BD) – a Fast Method for Integrity Checking and Decoding of AN(BD)-coded Data S. 3-17

„… mathematic equation, the fastAN method looks like shown below. Solving the equation shows that it is …” „… . The fastAN(BD) Integrity Checking Method 15 Table 2: Runtime reduction results by using fastAN(BD …” „… 3 fastAN(BD) – a Fast Method for Integrity Checking and Decoding of AN(BD)-coded Data Stefan …”

G. Fahrnberger Blind Censoring for Instant Messaging S. 62-80

„… instant messages addressed to cyberbullying-endangered IM receivers shapes up as a more promising resort …” „… (Bulletin Board Systems) accessible through dial-up connections were allaying the hunger for personal …” „… (Communication Service Providers) have let spring up IM platforms like mushrooms with millions of international …”

P. Meesad, K. Rojanawan Time Series Imputation and Prediction Based on Machine Learning S. 48-61

„… takes advantages of learning machnisisms of machine Learning methods for both missing values imputation …” „… methods used in this work areMultilayer Perceptron (MLP), Adaptive Neuro Fuzzy Inference System (AN- FIS …” „… replace the missing value. The simplest methods are to use basic statistical methods such as min, max …”

N.A. Akwir, M.K. Mutengi, W.V. Kambale, J.C. Chedjou, K. Kyamakya Graph Theoretical Problems in Traffic Management – A Brief Survey S. 151-169

„… ]. The last-named method is used amongst others for solving linear programming problems. Overall, several …” „… techniques such as the following ones: simplex method, genetic algorithm, ant colony algorithm, and the …” „… ), which is a trips table that shows the number of travels from each origin to each destination for a given …”

doi.org/10.51202/9783186862105

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PIAE EUROPE 2021

VDI Wissensforum GmbH (Hrsg.)

Reihe: VDI-Berichte

Band 2385 2021

Treffer in den folgenden Teilen:

R. Holschuh, T. Bayerl Shaping the future of electromobility with holistic plastic solutions S. 185-198

„… set-up is sketched in Fig. 2, while Table 2 lists the most important test and classification parameters …” „… by this test method (see Table 4) [10, 11]. However, what both methods have in common is that a …” „… highly dynamic. In this context, it is worth taking a look at materials other than the metallic …”

T. Köppl, F. Dresel, N. Grohnmeier Breakthrough in producing soft and sustainable interior surfaces by injection moulding of TPE S. 49-60

„… Several processing methods and materials exist to produce soft-touch interior surfaces like instrument …” „… parts. Therefore they are an interesting alternative to existing production methods like PU coating …” „… be a concern because they lead to steamed-up windows, which impedes visibility. Due to this, car …”

doi.org/10.51202/9783181023853

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Dritev – Drivetrain For Vehicles 2018

VDI Wissensforum GmbH (Hrsg.)

Reihe: VDI-Berichte

Band 2328 2018

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I. Andrasec, B. Jeitler AVL’s future hybrid X mode – A modular transmission family concept S. I-211-I-228

„… be used as a conventional AT (Automatic Transmission), a 48 Volt or High Voltage Hybrid up to …” „… partially incorporated in future US legislation and takes a wider look at the whole life cycle of a vehicle …” „… expected to result in additional cost. At 400 volts, the performance potential of e-motors increases up to …”

K. Bennewitz, A. Mann Powertrain electrification exemplified by the VW Golf S. II-135-II-168

„… batterieelektrisch betriebenen Fahrzeuge e-up! und e-Golf. Mit Hilfe dieser Konzepte gewonnene Erkenntnisse und …” „… . Examples are the Touareg Hybrid and the Jetta Hybrid, the pure electric vehicles e-up! and e-Golf as well …” „… (µ-hybrid) over mild hybrids (mHEV) as well as full-hybrid concepts (HEV) up to plug-in hybrids (PHEV …”

T. Gemassmer Approaches to increase efficiency and dynamics of ipmsm traction drives by optimization of control strategies S. II-85-II-102

„… current-dependent differential inductance , in terms of a look-up table (LUT) or as an approximated function in …” „… power and efficiency by reducing the control reserve. The results of the described methods are …” „… with a reduced voltage reserve. The described methods have been implemented on a prototype drive …”

doi.org/10.51202/9783181023280

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Experimental testing and numerical simulation of granules as crash absorber for double hull structures

Christian Woitzik

Reihe: Mechanik/Bruchmechanik

Band 356 2021

Treffer in den folgenden Teilen:

Determination of bulk particle properties S. 40-63

„… geomechanics, and is easy to set up [61]. Therefore, its boundary conditions are simple to implement in the FEM …” „… approximately 8% is in agreement with the data given by the manufacturer [139]. Up to a stress level of 400 kPa …” „… Table 3.1, this is about a magnitude smaller than the crushing strength for single particles. This …”

Numerical investigation S. 88-112

„… [72]. An explicit time integration method is applied – which is a common choice for crash and impact …” „… granules. The potential of this method is of particular interest since the use of the DEM is …” „… underestimated by about 5 %. However, a look at the outer hull reveals that the results are not 89 6 Numerical …”

Selection of granules and description of single grains S. 24-39

„… cylinder up to a height of 181 mm. Two forces are measured. First, the Cylinder Load cell Granules …” „… expanded glass granule Poraver is chosen as the primary material of interest. A study, with a closer look …” „… ], while the results for Poraver are listed in Table 3.1. There, the material is divided into three …”

doi.org/10.51202/9783186356185

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