Tag Archives: Computational fluid dynamics (CFD)

Figure 7. The velocity magnitude field at the times of impact and immediately afterwards: (a) t⋅UR = 0.2; (b) t⋅UR = 0.205; (c) t⋅UR = 0.21. Here, U=Uin with Uin = 20 ms−1.

On the CFD Modelling of Slamming of the Metal Melt in High-Pressure Die Casting Involving Lost Cores

by Sebastian Kohlstädt 1,2,Michael Vynnycky 1,3,* andStephan Goeke 41Division of Processes, Department of Materials Science and Engineering, KTH Royal Institute of Technology, Brinellvägen 23, 100 44 Stockholm, Sweden2Volkswagen AG—Division of Components Manufacturing, Dr. Rudolf-Leiding-Platz 1, 34225 Baunatal, Germany3Department of Mathematics and Statistics, University of Limerick, Limerick V94 T9PX, Ireland4Institute of Mechanics, Kassel University, Mönchebergstr. 7, 34125 Kassel, Germany*Author to whom

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Figure 2 CAD model of the sample geometry in 3D (see online version for colours)

Comparative RANS turbulence modelling of lost salt core viability in high pressure die casting

Sebastian Kohlstädt* and Michael VynnyckyDepartment of Materials Science and Engineering,KTH Royal Institute of Technology,Brinellvägen 23,100 44 Stockholm, SwedenEmail: skoh@kth.seEmail: michaelv@kth.se*Corresponding author Abstract In this work, the implementation of three turbulence models inside the open source C++ computational fluid dynamics (CFD) library OpenFOAM were tested in 2D and 3D to determine the viability of salt cores

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Figure 10 Comparison of time evolution of the melt flow in the mid-cross section during mould filling, as calculated with OpenFOAM (upper row) and MAGMA5 (lower row), at four different times: (a) 0.1022 s (b) 0.1030 s (c) 0.1038 s (d) 0.1046 s (see online version for colours)

Comparative RANS turbulence modelling of lost salt core viability in high pressure die casting

Kohlstädt, Sebastian KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering. Vynnycky, Michael KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering.ORCID iD: 0000-0002-8318-1251 Neubauer, Alexander Volkswagen AG, Div Components Mfg, Business Unit Casting, Dr Rudolf Leiding Pl 1, D-34225 Baunatal, Germany.. Gebauer-Teichmann, Andreas Volkswagen AG, Div Components Mfg, Business

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Fig. 3. Dies of the example structures used in gravity casting.

Approach on simulation of solidification and shrinkage of gravity cast salt cores

AndreasSchillingaKaiSalscheideraHenrikRuschebHrvojeJasakbMartinFehlbieraSebastianKohlstädtcaUniversity of Kassel, Department of Foundry Technology, Kurt-Wolters-Str. 3, 34125 Kassel, GermanybWikki GmbH, Ziegelbergsweg 68, 38855 Wernigerode, GermanycVolkswagen AG, Division of components manufacturing – Business Unit Casting Dr. Rudolf-Leiding-Platz 1, 34225 Baunatal, Germany Abstract In this work, a toolchain for the solidification and the shrinkage of cast salt cores used in high-pressure die casting is

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Figure 6. The pressure field at the times of impact and immediately afterwards

On the CFD Modelling of Slamming of the Metal Melt in High-Pressure Die Casting Involving Lost Cores

by Sebastian Kohlstädt 1,2,Michael Vynnycky 1,3,* andStephan Goeke 41Division of Processes, Department of Materials Science and Engineering, KTH Royal Institute of Technology, Brinellvägen 23, 100 44 Stockholm, Sweden2Volkswagen AG—Division of Components Manufacturing, Dr. Rudolf-Leiding-Platz 1, 34225 Baunatal, Germany3Department of Mathematics and Statistics, University of Limerick, Limerick V94 T9PX, Ireland4Institute of Mechanics, Kassel University, Mönchebergstr. 7, 34125 Kassel, Germany*Author to whom

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Fig. 2. Baseline and Optimized plunger speed profiles.

On the probabilistic nature of high-pressure die casting

EwanLordanaYijieZhangaKunDouabAlainJacotacChrysoulaTzileroglouaPaulBlakedZhongyunFanaaBrunel Centre for Advanced Solidification Technology, Brunel University London, Uxbridge, Middlesex, UB83PH, UKbSchool of Metallurgy and Environment, Central South University, Changsha, 410083, Hunan, ChinacCalcom ESI SA, SwitzerlanddJaguar Land Rover Ltd, Coventry, CV3 4LF, UK Abstract This article unmasks the probabilistic nature of high-pressure die casting; specifically, the cause of scatter in the tensile ductility of

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