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"The course was well organized, the trainers were well-prepared: it will definitely help me in my work" (P. Jafarian, Vicura)
News
How to simulate sand core manufacturing for metal casting?
In casting, a challenge, among others, is to produce parts with cavities or obtuse angles. One solution is to manufacture sand cores to mold the metal around them, then to have the sand removed.
FLOW-3D CAST offers the possibility to simulate the making of the sand cores precisely thank to its multiple physical models: Two-fluid Compressible Flow, Drift Flux, Density and Granular Flow Model. Those enable the simulation of the core blowing, gassing and drying processes as well as the simulation of the curing of organic and inorganic cores.
The video shows a simulation of a sand core filling with a focus on density. Knowing precisely how the sand density behaves allows to anticipate the parts of the core that will be more prone to erosion or to provoking sand inclusion in the metal parts. It is possible to optimize the core manufacturing process using FLOW-3D CAST and IMPROVEit in order to insure less defects and better quality of cores.
The model was validated in collaboration with BMW
Core blowing process
🇫🇷 Encore un grand merci à tous les participants d'avoir contribué à faire de la FLOW-3D European Users Conference 2019 le succès qu'elle a été.
Nous vous informons que les présentations sont dès à présent disponibles sur le site: ow.ly/aSti50v2Jlk
🇮🇹 Ancora una volta, un grande ringraziamento a tutti i partecipanti per aver contribuito al successo della FLOW-3D European Users Conference 2019.
Vi informiamo che le presentazioni sono ora disponibili sul sito web: www.flow3d.com/resources/conference-proceedings/The FLOW-3D European Users Conference 2019 was a huge success thanks to our enthusiastic user community and especially our speakers. The proceedings from the FLOW-3D European Users Conference 2019 are now available! www.flow3d.com/resources/conference-proceedings/
#FLOW3DEUC2019 #usercommunity #flow3d #cfd #milan
How can CFD help determine the efficiency of a weir?
FLOW-3D uses the Volume-of-Fluid method to simulate fluids, and more particularly free-surface flows. Therefore, it can precisely compute the variation created in a flow over a weir when a radial gate is slowly opened. The decrease in velocity in the stream is clearly visible on the video, as well as the passage of the flow from turbulent to almost laminar.
Video courtesy of Minerva Dynamics
Flow over a sharp crested weir with opening of radial gate
CFD model of the flow of water over a curved sharp crested weir and the opening of the radial gate adjacent to it. The simulation shows the increase in total...How to efficiently model free-surface using CFD?
One of FLOW-3D's differentiating features is the way its mesh is defined. As opposed to many other software, the mesh on FLOW-3D doesn’t follow the geometry of the object of study, but is defined according to the coordinate system chosen by the user. The size and number of cells is still easily adjusted through the GUI.
Moreover, the interface between two fluids is modelled using the Volume of Fluid method, which indicates for each cell the volume of fluid it contains. At the interface between two fluids, each cell also contains the information about the direction towards which the surface of the fluid is oriented. This method allows for a sharp tracking of the free surface.
The advantage of using this method is that it doesn’t require much more computational time or power, and that it enables a precise modeling of the free surface, even when it is very agitated and undergoing radical changes.
Free Surface Flow Modeling | FLOW-3D
FLOW-3D will be showcased in an upcoming 1 day workshop (12/10/18) at the 2018 Fish Passage conference in Albury, Australia. The first portion of this course...How to reduce the powertrain component’s weight? -
Comment réduire le poids du groupe motopropulseur? -
Come ridurre il peso dei componenti powertrain?
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Claudio Mus, R&D Director at Endurance Overseas, presented at the #FLOW3DEUC19 the simulations he made in order to evaluate the importance of the thickness of the components on cavitation risk, air entrainment and liquid metal velocity during casting. The video below displays the risks of cavitation and thus of erosion risks of the mold at different thicknesses. We actually see that reducing the thickness and consequently the weight also improves the casting process and the final result.
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Claudio Mus, Directeur en R&D chez ENDURANCE, a présenté au #FLOW3DEUC19 les simulations qu’il a effectuées afin d’évaluer l’importance de l’épaisseur du composant sur le risque de cavitation, sur l’entrainement d’air ainsi que sur la vitesse du métal en fusion lors du moulage. La vidéo ci-dessous montre les différents risques de cavitation, et donc d’érosion, du moule en fonction de l’épaisseur. On remarque dans ce cas que diminuer l’épaisseur contribue non seulement à réduire le poids mais aussi à améliorer le processus de moulage ainsi que le résultat final.
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Claudio Mus, Direttore R&D di ENDURANCE, ha presentato le simulazioni da lui effettuate per valutare l'importanza dello spessore del componente sul rischio di cavitazione, sul trascinamento dell'aria e sulla velocità del metallo fuso durante la colata. Il video qui sotto mostra i diversi rischi di cavitazione, e quindi di erosione, dello stampo a seconda dello spessore. Si può notare che la riduzione dello spessore in questo caso non solo contribuisce a ridurre il peso, ma anche a migliorare il processo di stampaggio e il risultato finale.
