On Determining the Critical Velocity in the Shot Sleeve of a High-Pressure Die Casting Machine Using Open Source CFD
This paper investigates the critical plunger velocity in high-pressure die casting during the slow phase of the piston motion and how it can be determined with computational fluid dynamics (CFD) in open source software. The melt-air system is modelled via an Eulerian volume-of-fluid approach, treati...
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2021
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oai:doaj.org-article:c1195a35737d4d3285fdc95763e023052021-11-25T17:31:32ZOn Determining the Critical Velocity in the Shot Sleeve of a High-Pressure Die Casting Machine Using Open Source CFD10.3390/fluids61103862311-5521https://doaj.org/article/c1195a35737d4d3285fdc95763e023052021-10-01T00:00:00Zhttps://www.mdpi.com/2311-5521/6/11/386https://doaj.org/toc/2311-5521This paper investigates the critical plunger velocity in high-pressure die casting during the slow phase of the piston motion and how it can be determined with computational fluid dynamics (CFD) in open source software. The melt-air system is modelled via an Eulerian volume-of-fluid approach, treating the air as a compressible perfect gas. The turbulence is treated via a Reynolds-averaged Navier Stokes (RANS) approach that uses the Menter SST <i>k</i>-<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mi>ω</mi></semantics></math></inline-formula> model. Two different strategies for mesh motion are presented and compared against each other. The solver is validated via analytical models and empirical data. A method is then presented to determine the optimal velocity using a two-dimensional (2D) mesh. As a second step, it is then discussed how the results are in line with those obtained for an actual, industrially relevant, three-dimensional (3D) geometry that also includes the ingate system of the die.Sebastian KohlstädtMichael VynnyckyStephan GoekeAndreas Gebauer-TeichmannMDPI AGarticlecompressible two-phase flowhigh-pressure die castingshot sleevecritical velocityOpenFOAMThermodynamicsQC310.15-319Descriptive and experimental mechanicsQC120-168.85ENFluids, Vol 6, Iss 386, p 386 (2021) |
| institution |
DOAJ |
| collection |
DOAJ |
| language |
EN |
| topic |
compressible two-phase flow high-pressure die casting shot sleeve critical velocity OpenFOAM Thermodynamics QC310.15-319 Descriptive and experimental mechanics QC120-168.85 |
| spellingShingle |
compressible two-phase flow high-pressure die casting shot sleeve critical velocity OpenFOAM Thermodynamics QC310.15-319 Descriptive and experimental mechanics QC120-168.85 Sebastian Kohlstädt Michael Vynnycky Stephan Goeke Andreas Gebauer-Teichmann On Determining the Critical Velocity in the Shot Sleeve of a High-Pressure Die Casting Machine Using Open Source CFD |
| description |
This paper investigates the critical plunger velocity in high-pressure die casting during the slow phase of the piston motion and how it can be determined with computational fluid dynamics (CFD) in open source software. The melt-air system is modelled via an Eulerian volume-of-fluid approach, treating the air as a compressible perfect gas. The turbulence is treated via a Reynolds-averaged Navier Stokes (RANS) approach that uses the Menter SST <i>k</i>-<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mi>ω</mi></semantics></math></inline-formula> model. Two different strategies for mesh motion are presented and compared against each other. The solver is validated via analytical models and empirical data. A method is then presented to determine the optimal velocity using a two-dimensional (2D) mesh. As a second step, it is then discussed how the results are in line with those obtained for an actual, industrially relevant, three-dimensional (3D) geometry that also includes the ingate system of the die. |
| format |
article |
| author |
Sebastian Kohlstädt Michael Vynnycky Stephan Goeke Andreas Gebauer-Teichmann |
| author_facet |
Sebastian Kohlstädt Michael Vynnycky Stephan Goeke Andreas Gebauer-Teichmann |
| author_sort |
Sebastian Kohlstädt |
| title |
On Determining the Critical Velocity in the Shot Sleeve of a High-Pressure Die Casting Machine Using Open Source CFD |
| title_short |
On Determining the Critical Velocity in the Shot Sleeve of a High-Pressure Die Casting Machine Using Open Source CFD |
| title_full |
On Determining the Critical Velocity in the Shot Sleeve of a High-Pressure Die Casting Machine Using Open Source CFD |
| title_fullStr |
On Determining the Critical Velocity in the Shot Sleeve of a High-Pressure Die Casting Machine Using Open Source CFD |
| title_full_unstemmed |
On Determining the Critical Velocity in the Shot Sleeve of a High-Pressure Die Casting Machine Using Open Source CFD |
| title_sort |
on determining the critical velocity in the shot sleeve of a high-pressure die casting machine using open source cfd |
| publisher |
MDPI AG |
| publishDate |
2021 |
| url |
https://doaj.org/article/c1195a35737d4d3285fdc95763e02305 |
| work_keys_str_mv |
AT sebastiankohlstadt ondeterminingthecriticalvelocityintheshotsleeveofahighpressurediecastingmachineusingopensourcecfd AT michaelvynnycky ondeterminingthecriticalvelocityintheshotsleeveofahighpressurediecastingmachineusingopensourcecfd AT stephangoeke ondeterminingthecriticalvelocityintheshotsleeveofahighpressurediecastingmachineusingopensourcecfd AT andreasgebauerteichmann ondeterminingthecriticalvelocityintheshotsleeveofahighpressurediecastingmachineusingopensourcecfd |
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