Tag Archives: CFD

FIGURE 3 Soot deposition on throttle valve (Configuration-1), left: CFD results showing cycle averaged EGR fraction contours on throttle valve, right: sample of throttle valve in test

Hot Spot on Plastic Duct & Soot Deposition on Throttle Valve Using CFD Simulation

CFD 시뮬레이션을 사용하여 플라스틱 덕트의 열 핫스팟 및 스로틀 밸브의 그을음 침착을 최소화하기 위한 EGR 믹서 최적화 In recent time, with inception of BS VI emission regulation with more focus on fuel economy and emission, many engine parts which were conventionally made from metal are getting replaced with plastic components for reducing weight to attain

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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 5. Piston mesh for HT modelling (cooling gallery in blue)

Improving Heat Transfer and Reducing Mass in a Gasoline Piston Using Additive Manufacturing

Miguel Angel Reyes Belmonte and Colin D. CopelandUniversity of BathDrummond Hislop, George Hopkins, and Adrian SchmiederHiETA Technologies LtdScott BreddaGE PrecisionSam AkehurstUniversity of Bath Abstract Pressure and temperature levels within a modern internal combustion engine cylinder have been pushing to the limits of traditional materials and design. These operative conditions are due to the stringent emission

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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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Figure 3. Buckling analysis model: boundary condition and load cases.

Experimental and Numerical Study of an Automotive Component Produced with Innovative Ceramic Core in High Pressure Die Casting (HPDC)

by  1,*, 1, 1, 2, 1, 1 and 1 1DIMI, Department of Industrial and Mechanical Engineering, University of Brescia, via Branze 38, 25123 Brescia, Italy 2Co.Stamp. s.r.l. Via Verdi 6, 23844 Sirone (LC), Italy*Author to whom correspondence should be addressed. Metals2019, 9(2), 217;Received: 14 December 2018 / Revised: 7 February 2019 / Accepted: 8 February 2019 / Published: 12 February 2019 Abstract Weight reduction

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Figure 15. R-HPDC automobile shock absorber part.

R-HPDC Process with Forced Convection Mixing Device for Automotive Part of A380 Aluminum Alloy

by Bing Zhou,Yonglin Kang *,Mingfan Qi,Huanhuan Zhang andGuoming ZhuSchool of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China*Author to whom correspondence should be addressed.Materials2014, 7(4), 3084-3105; https://doi.org/10.3390/ma7043084Received: 24 March 2014 / Revised: 4 April 2014 / Accepted: 4 April 2014 / Published: 15 April 2014(This article belongs to the Special Issue Light Alloys and Their Applications)

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Fig. 1. a) Pin holes observed in the top side casting; b) Blow holes observed in tapped holes; c) Porosity is observed in top side of the casting.

Numerical and experimental approach to eliminate defects in al alloy pump- crank case processed through gravity die casting route

S.AravindP.RagupathiG.VigneshDepartment of Mechanical Engineering, Karpagam Academy of Higher Education, Coimbatore, Tamil Nadu 641 021, India Received 30 June 2020, Accepted 14 July 2020, Available online 14 August 2020. Abstract A numerical investigation was carried out with the help of computer based casting simulation software to eliminate defects such as shrinkage due to solidification, cracks, imperfect

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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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