Tag Archives: CFD

Figure 1. Diagrammatic representation of a squirrel-cage induction motor.

Thermal Analysis and Cooling Strategies of High-Efficiency Three-Phase Squirrel-Cage Induction Motors—A Review

by Yashwanth Reddy Konda 1, Vamsi Krishna Ponnaganti 2, Peram Venkata Sivarami Reddy 3,R. Raja Singh 4, Paolo Mercorelli 5,*, Edison Gundabattini 6,* and Darius Gnanaraj Solomon 7 Abstract In recent times, there has been an increased demand for electric vehicles. In this context, the energy management of the electric motor, which are an important constituent of electric vehicles, plays a pivotal role. A

Read More

Figure 1. Extrusion limits

High Density Die Casting (HDDC): new frontiers in the manufacturing of heat sinks

Andrea Sce1 and Lorenzo Caporale1 Published under licence by IOP Publishing LtdJournal of Physics: Conference Series, Volume 525, Eurotherm Seminar 102: Thermal Management of Electronic Systems 18–20 June 2014, Limerick, Ireland Citation Andrea Sce and Lorenzo Caporale 2014 J. Phys.: Conf. Ser. 525 012020DOI 10.1088/1742-6596/525/1/012020 Abstract Finding a good solution for thermal management problems is every day more complex. due to the power density

Read More

A heuristic approach to meet geometric tolerance in High Pressure Die Casting

A heuristic approach to meet geometric tolerance in High Pressure Die Casting

G.CampatelliA.Scippa Abstract In High Pressure Die Casting (HPDC), geometrical distortions usually happen during the cooling phase, due to the reduced cooling time and the high thermal gradient inside the product itself. This phenomenon affects most the thin walled products. The usual die design practice considers only the linear shrinking of the product during the cooling as a consequence of

Read More

Fig. 12. Stress condition on salt core surface immediately after the first impact of the semi solid melt. The flow velocity before impact is 4.55 m/s. The maximum stress on the lower core side is approximately 2.3 MPa.

About the impact on gravity cast salt cores in high pressure die casting and rheocasting

Author links open overlay panelAndreasSchillingDanielSchmidtJakobGlückNiklasSchwenkeHusamSharabiMartinFehlbierShow moreAdd to MendeleyShareCite https://doi.org/10.1016/j.simpat.2022.102585Get rights and content Under a Creative Commons license Open access Abstract In this work, a simulations study on the impact on gravity cast salt cores was carried out for the different casting parameters in high pressure die casting as well as in rheocasting. To compare the simulation results, salt cores were

Read More

First-Principles Calculation and Mechanical Properties of NaCl–Na2SO4 Composite Water-Soluble Salt Core

First-Principles Calculation and Mechanical Properties of NaCl–Na2SO4 Composite Water-Soluble Salt Core

Xue-ting Wang,  Wei-hua Liu,  Xuan-yu Liu &  Lai Song  International Journal of Metalcasting (2022)Cite this article 84 Accesses 1 Citations Metricsdetails Abstract In this paper, the interfacial energy of various inorganic salts was calculated using the first principle. Finally, NaCl and Na2SO4 were determined as the core materials. A high-strength composite salt core was prepared by optimizing the distribution ratio

Read More

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

Read More

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

Read More

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

Read More

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

Read More