SDM Archives - CAE Watch https://caewatch.com/tag/sdm/ Everything about Computational Fluid Dynamics (CFD), Finite Element Analysis (FEA) and product lifecycle management (PLM) Tue, 11 Sep 2018 04:42:47 +0000 en-US hourly 1 https://wordpress.org/?v=7.0 55942682 CFD in 2013: what will change? what will not https://caewatch.com/cfd-in-2013-what-will-be-changed-what-will-not/ https://caewatch.com/cfd-in-2013-what-will-be-changed-what-will-not/#comments Mon, 31 Dec 2012 12:00:28 +0000 http://caewatch.com/?p=147 Mayan-ApocalypseObviously, the doomsday didn’t come. It proves again it is hard to predicate what will happen when you don’t have sufficient knowledge of how the system works now. Maybe it is just a bug in Mayan’s calendar (Google also forgot to put December in People App in Android 4.2 (aka Jelly Bean 4.2)  last November).

Predicting the future of CFD is similar to weather forecasting, maybe just like Mayan’s Apocalypse.

But this does not stop us from expecting a new prediction, just like you check the weather forecast before travel.

As my first degree is meteorology related, please do not expect the prediction is more accurate than weather forecasting for the next 365 days.

#1. Automated meshing:  a classical fairy tale continues

Fairy tales always have listeners, and of course, tellers as well. When you are young, you are listeners; when you are older, you may gradually become a teller.  What has not been changed is the story.

Automated meshing is such a classic fairy tale in CFD industry.

Meshing is always one of the most challenging tasks for most real-world CFD problems (I am not talking about flow over an infinite plate). Automated mesh generation is the dream … Read the rest “CFD in 2013: what will change? what will not”

The post CFD in 2013: what will change? what will not appeared first on CAE Watch.

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Mayan-ApocalypseObviously, the doomsday didn’t come. It proves again it is hard to predicate what will happen when you don’t have sufficient knowledge of how the system works now. Maybe it is just a bug in Mayan’s calendar (Google also forgot to put December in People App in Android 4.2 (aka Jelly Bean 4.2)  last November).

Predicting the future of CFD is similar to weather forecasting, maybe just like Mayan’s Apocalypse.

But this does not stop us from expecting a new prediction, just like you check the weather forecast before travel.

As my first degree is meteorology related, please do not expect the prediction is more accurate than weather forecasting for the next 365 days.

#1. Automated meshing:  a classical fairy tale continues

Fairy tales always have listeners, and of course, tellers as well. When you are young, you are listeners; when you are older, you may gradually become a teller.  What has not been changed is the story.

Automated meshing is such a classic fairy tale in CFD industry.

Meshing is always one of the most challenging tasks for most real-world CFD problems (I am not talking about flow over an infinite plate). Automated mesh generation is the dream … Read the rest “CFD in 2013: what will change? what will not”

The post CFD in 2013: what will change? what will not appeared first on CAE Watch.

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From post-processing and visualization to simulation result exploration https://caewatch.com/from-post-processing-and-visualization-to-simulation-result-exploration/ https://caewatch.com/from-post-processing-and-visualization-to-simulation-result-exploration/#comments Tue, 28 Aug 2012 13:54:56 +0000 http://caewatch.com/?p=126 We all know post-processing because it is part of CAE.

moon-explorationAll textbooks teach you how important the post-processing is. For most Generation Y engineers, post-processing (and maybe even the whole CAE) almost equal to visualization as discussed in this post.

Yes, post-processing is important: it gives you the chance to justify your one-month (or one-day, or one-week, or one-year) work; it shows you something you want or something unexpected.

If you are lucky, you can even show how your simulation matches the experimental results. If you don’t have any experimental data (unfortunately, nowadays, this is not uncommon any more), you can still justify your results against common sense.

Of course, “right” or “accurate” results are not the goal of simulation.  The purposes of simulation usually  include:

  • to get some data or insights that are impossible, or impractical, or too expensive, from experiments or physical tests (so that the process or system or physics can be better understood; for PhD students, more colorful figures in papers and thesis) ;
  • to diagnose the problems encountered of a system (or a component) in real-world operation (so that the possible causes or scapegoats can be identified);
  • to predicate the performance of a system

Read the rest “From post-processing and visualization to simulation result exploration”

The post From post-processing and visualization to simulation result exploration appeared first on CAE Watch.

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We all know post-processing because it is part of CAE.

moon-explorationAll textbooks teach you how important the post-processing is. For most Generation Y engineers, post-processing (and maybe even the whole CAE) almost equal to visualization as discussed in this post.

Yes, post-processing is important: it gives you the chance to justify your one-month (or one-day, or one-week, or one-year) work; it shows you something you want or something unexpected.

If you are lucky, you can even show how your simulation matches the experimental results. If you don’t have any experimental data (unfortunately, nowadays, this is not uncommon any more), you can still justify your results against common sense.

Of course, “right” or “accurate” results are not the goal of simulation.  The purposes of simulation usually  include:

  • to get some data or insights that are impossible, or impractical, or too expensive, from experiments or physical tests (so that the process or system or physics can be better understood; for PhD students, more colorful figures in papers and thesis) ;
  • to diagnose the problems encountered of a system (or a component) in real-world operation (so that the possible causes or scapegoats can be identified);
  • to predicate the performance of a system
Read the rest “From post-processing and visualization to simulation result exploration”

The post From post-processing and visualization to simulation result exploration appeared first on CAE Watch.

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