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Nächste Überarbeitung		Vorhergehende Überarbeitung
en:sigma3d-interface [2026/02/27 09:23] – [Generate PDF report] adminen:sigma3d-interface [2026/03/02 10:36] (aktuell) – [Shear stress] admin
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 The information dialog (see screenshot) explains: The information dialog (see screenshot) explains:
  
-{{ :en:en_sigma151_dlg_sigma3d-interface_005.png?nolink |Information about time steps and particle tracing recommendation}}+{{ :en:en_sigma151_dlg_sigma3d-interface_005.png?nolink&600 |Information about time steps and particle tracing recommendation}}
  
  
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 The software provides a **mixing quotient** evaluation after running a particle tracking simulation. The software provides a **mixing quotient** evaluation after running a particle tracking simulation.
  
-{{ :en:en_sigma151_dlg_sigma3d-interface_018.png?nolink&1000 |Mixing quotient evaluation (cross-section + curve over timestep)}}+{{ :en:en_sigma151_dlg_sigma3d-interface_018.png?nolink&800 |Mixing quotient evaluation (cross-section + curve over timestep)}}
  
 The displayed delaunay evaluation typically consists of: The displayed delaunay evaluation typically consists of:
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 A shear-stress evaluation can also be generated (e.g. histogram-based output depending on the configured post-processing options and software version). A shear-stress evaluation can also be generated (e.g. histogram-based output depending on the configured post-processing options and software version).
  
-Use case: +{{ :en:en_sigma151_dlg_sigma3d-interface_020.png?nolink&800 |}}
- +
-  * assessment of mechanical load on the polymer melt +
-  * process optimization for shear-sensitive materials +
-  * comparison of local peak loads between screw setups +
- +
-Note: +
-No dedicated shear-stress screenshot is included in the current figure set. The exact display format may vary (histogram / contour / statistics), depending on version and selected output type. +
  
  
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 This is a fast method for local element studies and comparative investigations of specific screw sections. This is a fast method for local element studies and comparative investigations of specific screw sections.
  
-===== Engineering recommendations  =====+===== Recommendations  for numerical simulation with SIGMA=====
  
-==== For setup and runtime ====+**For setup and runtime**
  
   * Start with a **coarse / rough mesh** for initial feasibility studies.   * Start with a **coarse / rough mesh** for initial feasibility studies.
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   * Increase resolution only after the setup has been validated.   * Increase resolution only after the setup has been validated.
  
-==== For thermal simulations ==== +**For thermal simulations**
- +
-  * Use non-isothermal simulation only when thermal effects are process-relevant (e.g. viscous heating, melting progression, temperature-sensitive materials). +
-  * Check CPU/RAM availability before enabling thermal and melting calculations simultaneously.+
  
-==== For particle tracking and mixing analysis ====+  * Use non-isothermal simulation only when thermal effects are process-relevant. 
 +  * Check CPU/RAM availability before enabling thermal and melting calculations simultaneously and keep in mind, that this simulation can take time.
  
-  * Ensure sufficient **time step resolution** (recommended >= 40 for particle-tracing evaluation). +**For particle tracking and mixing analysis**
-  * Begin with moderate particle density to estimate runtime. +
-  * Use mixing quotient trends to compare screw element designs quantitatively.+
  
 +  * Ensure sufficient **time step resolution** ( 36 for particle-tracing evaluation are recommended).