Releases: Xiangyu-Hu/SPHinXsys
Bug fix on Riemann solver and thin shell dynamics for better numerical stability
In this release, two important bug fixes have been included.
- Riemann solver will still be used for fluid-wall interaction, since some cases occasionally lead to very small times steps,
especially when the resolution is high.
2, The bug on numerical dissipation for thin shell structure has been corrected.
Now the simulation of thin shell problems do not require smaller time steps any more.
Eigen library, new features and faster fluid dynamics
In this release, the new features are:
- The library uses Eigen 3 for vector and matrix operations.
- The fluid dynamics has been further accelerated more than 30%.
- Dynamics algorithms are explicitly defined in case file.
- Level-set topological correction introduced for to great robustness in particle generation.
- Particle split and merge algorithms are included with a new dam-break case.
- Adaptive particle sizes and variable smoothing lengths can be used for fluid dynamics simulation.
Please check the project website www.sphinxsys.org for the updated installation instructions for Linux and Windows systems.
You are welcomed to try and comment this new release.
New features on geometry, contact and particle generation
In this release, the new features are:
- New geometric shape which is much faster than triangular mesh is introduced.
- General coordinate transformation is introduced to all shapes.
- Contact between volumetric and surface structures is introduced.
- Particle generation is generalized for volumetric and surface particles.
- Construction of adaptation, particles and materials now are based on factory methods.
Installation note:
Eigen 3 library is required for this release. You can download it from https://eigen.tuxfamily.org/index.php?title=Main_Page.
The eigen library source should be put in the folder 3rd_party/eigen.
Validated shell models and Eulerian formulations
In this release,
besides the bug related free-stream boundary condition is fixed.
the shell models have been validated with classical tests from literature.
Another new feature is the Eulerian formulations.
Currently, weakly compressible and fully compressible formulation are implemented and validated with typical cases.
Using particle relaxation, SPHinXsys is able to simulate classical aerodynamic and gas-dynamics problems.
You are welcome to test and comment!
New features on memory safty and regression test
In this new release, we have first introduced a new feature of regression test,
so that the simulation results of test cases will be compared with previous computed results.
This will eliminate hidden bugs which do not blowup the simulations.
The second updates in the release is the enforcement of Resource acquisition is initialization (RAII),
so that memory leaking which often due to new raw pointers will be avoided.
For this, the ownership of objects are explicitly defined with the help of smart pointers.
Since these smart pointers are only involved in object constructors,
the usage and efficiency of raw pointers (as observers) for computation was not influenced.
You are welcomed to test and report issues.
New feature of self-contact with examples (windows compatible version)
In this release self-contact between solid bodies are included with two examples.
To install this release, you need to install google test.
We also provide the dependent free version of the library,
by which, all the dependent headers and cpp files will be included in a single project.
You are welcome to test,
and report bugs by using "Issues" of the repository.
Cmake bug cleaned
The bug, which leads to Cmake error message, is cleaned.
There is still bug due to the incompatibility between windows and linux.
Please download the newest release version.
New feature of self-contact with examples
In this release self-contact between solid bodies are included with two examples.
To install this release, you need to install google test.
We also provide the dependent free version of the library,
by which, all the dependent headers and cpp files will be included in a single project.
You are welcome to test,
and report bugs by using "Issues" of the repository.
New examples on particle generation with single particle resolution
Two examples on particle relaxation in 2D and 3D with single particle resolution have been added to the folder cases_test.
The user can modify it for generate particles according to user defined geometries.
Multi-resolution modeling of multiphase flow with surface tension
We introduced the multi-resolution modeling of multiphase flow with surface tension.