OpenAeroStruct | lightweight tool that performs aerostructural optimization
kandi X-RAY | OpenAeroStruct Summary
kandi X-RAY | OpenAeroStruct Summary
OpenAeroStruct is a lightweight tool that performs aerostructural optimization using OpenMDAO.
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Top functions reviewed by kandi - BETA
- Generate a mesh from input dictionary
- Add the chords to the mesh
- Generate a crm mesh
- Return the CRM points for a given wing
- Compute the partials of a mesh
- Compute the cross product of two vectors
- Return unit vector of vec
- Compute the surface components
- Compute the cross between two arrays
- Apply nonlinear constraints to the input tensor
- Compute the reaction volume
- Compute the panel forces
- Compute the components of the graph
- Solve nonlinear problem
- Compute the partials of the grid
- Compute transformation
- Runs a test on the model
- Setup the model
- Compute the transition matrix
- Calculate the energy of a grid
- R Compute the polar pressure
- Compute quadratic model
- R Compute the polar ground effect
- Generate surfaces from OpenV file
- Generate documentation
- Save the design to a movie
OpenAeroStruct Key Features
OpenAeroStruct Examples and Code Snippets
Community Discussions
Trending Discussions on OpenAeroStruct
QUESTION
I noticed that prob.compute_totals()
returns a wrong answer when prob.model.approx_totals()
is not specified before. Having the partial derivative manually defined or computed by finite differences doesn't change anything, the answer remains wrong when not calling prob.model.approx_totals()
before. Also, the call to compute_totals
is actually faster when approx_totals
is called before, compared to when it's not. This seems counter-intuitive with manually defined partials, since approx_totals
is supposed to add an unnecessary finite-difference computation.
Here is a MWE with the Sellar example taken from the OpenMDAO documentation. I also noticed the same behaviour in OpenAeroStruct, even though the differences are smaller than in this example.
...ANSWER
Answered 2020-Feb-18 at 17:34In this example, the problem is that you have a cycle in SellarMDA, but the model does not contain a linear solver that can compute the total derivatives across the cycle. One way you can check on this is to run "openmdao check myfilename.py" at the command-line. I ran it on your model, and got the following warnings:
Community Discussions, Code Snippets contain sources that include Stack Exchange Network
Vulnerabilities
No vulnerabilities reported
Install OpenAeroStruct
You can use OpenAeroStruct like any standard Python library. You will need to make sure that you have a development environment consisting of a Python distribution including header files, a compiler, pip, and git installed. Make sure that your pip, setuptools, and wheel are up to date. When using pip it is generally recommended to install packages in a virtual environment to avoid changes to the system.
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