Скачать или смотреть 6. DAKOTA-OpenFOAM optimization loop | Derivative-free optimization

The blunt body shape optimization case - Part 4.

🤠 Derivative-free optimization
👍 CFD optimization and automation.
👏 Engineering design optimization loop.

🤖 DAKOTA optimization toolbox
https://dakota.sandia.gov/

In this demo case, we use the following tools:
Geometry generation: Salome.
Mesh generation: Salome.
Balck box solver: OpenFOAM 11.
Automatic post-processing: bash scripting and Python.
Plotting: Python.
Optimization and orchestrating tool: DAKOTA 6.19.0


00:00 Introduction - Preliminaries
02:32 Choosing an optimization method. General guidelines and decision matrix.
04:40 An excellent book on optimization by Vanderplaats
06:15 DAKOTA's input file - Some derivative-free methods
07:30 Efficient global optimization EGO - One of my favorite methods in DAKOTA
12:05 Let's launch an optimization study using the EGO method
15:25 Let's take a look at the outcome of the EGO method
18:15 What a beautiful test case
20:31 Mesh adaptive search method MADS
23:15 Let's launch an optimization study using the MADS method - I selected the wrong method
25:33 Let's launch an optimization study using the MADS method - The right method this time
26:53 Let's take a look at the outcome of the MADS method
31:35 DAKOTA's input file - Some derivative-free methods
32:20 Single objective genetic algorithm SOGA
34:11 Fine tunning the methods' parameter
37:00 Let's launch an optimization study using the SOGA method
39:32 Let's take a look at the outcome of the SOGA method
41:39 SOGA method - Where is the best solution?
44:30 Warning: do not use biased data to construct meta-models.
46:31 SOGA method - What iteration corresponds to the best solution?
48:58 Pattern search method or asynch_pattern_search in DAKOTA
49:58 Let's launch an optimization study using the asynch_pattern_search method
51:00 Let's take a look at the outcome of the asynch_pattern_search method
52:30 Final remarks - Main takeaways


Compressed tutorial:
Blunt body shape optimization case
https://bit.ly/3Rvyonj

Deck of slides:
Blunt body shape optimization
https://bit.ly/486DxrG

Related videos:
Blunt body shape optimization | Case presentation
   • DAKOTA-OpenFOAM code coupling and optimiza...  

Related playlists:
Transitioning to OpenFOAM 11 from OpenFOAM 10/9,
   • Transitioning to OpenFOAM 11 from OpenFOAM...  
DAKOTA optimization toolbox | Explore and predict with confidence | Installation and getting started,
   • DAKOTA optimization toolbox | Installation...  

Software links:
https://dakota.sandia.gov/
https://snl-dakota.github.io/
https://github.com/snl-dakota/dakota/...
https://xgboost.ai/
https://www.salome-platform.org/
https://openfoam.org/
https://learn.microsoft.com/en-us/win...
https://optuna.org/
https://www.gerad.ca/en/software/nomad/
https://www.gerad.ca/Sebastien.Le.Dig...

Additional links:
Excellent reference for optimization methods,
https://www.vrand.com/products/multid...

👍 CFD optimization and automation.
👏 Engineering design optimization loop.

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