TwinMesh
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* Option to fix the nodes along the housing geometry to get an 1:1 interface between the rotor meshes. | * Option to fix the nodes along the housing geometry to get an 1:1 interface between the rotor meshes. | ||
* Option to fix the nodes on one of the rotors so that the nodes on the other rotor are able to move. This method also results in an 1:1 rotor interface. | * Option to fix the nodes on one of the rotors so that the nodes on the other rotor are able to move. This method also results in an 1:1 rotor interface. | ||
| + | * Manual adjustment of individual nodes. | ||
| + | * Node mapping at general grid interfaces. | ||
* Various smoothing algorithms to control mesh orthogonality and node equidistance in all three dimensions. | * Various smoothing algorithms to control mesh orthogonality and node equidistance in all three dimensions. | ||
* Mesh quality check such as: determinant, min. angle, volume change, aspect ratio. | * Mesh quality check such as: determinant, min. angle, volume change, aspect ratio. | ||
Revision as of 05:39, 29 September 2016
Contents |
TwinMesh
TwinMesh is a meshing software developed by CFX Berlin Software GmbH, Germany. It automatically generates hexahedral meshes for the CFD simulation of the continuously changing fluid volumes of the working chambers of rotary positive displacement machines. The product was released in 2014.
The current product release is Version 2016 (v2.1.0.0), released in September 2016.
Mesh Types
TwinMesh can generate structured hexahedral meshes.
Meshing Techniques
TwinMesh's mesh generation employs the following meshing techniques and smoothing algorithms.
- Option to fix the nodes along the rotors, which results in a general interface between the rotor meshes.
- Option to fix the nodes along the housing geometry to get an 1:1 interface between the rotor meshes.
- Option to fix the nodes on one of the rotors so that the nodes on the other rotor are able to move. This method also results in an 1:1 rotor interface.
- Manual adjustment of individual nodes.
- Node mapping at general grid interfaces.
- Various smoothing algorithms to control mesh orthogonality and node equidistance in all three dimensions.
- Mesh quality check such as: determinant, min. angle, volume change, aspect ratio.
Geometry Support
TwinMesh supports IGES (.iges) and point data (.csv).
The following geometry modifications are available in TwinMesh.
- Rotor scaling
- Rotor translation
- Rotation angle offset
CFD Solver Interfaces
TwinMesh has built-in support for ANSYS CFX.
Supported Platforms
TwinMesh supports 64-bit Windows versions.
Literature
- Hesse, J., Spille-Kohoff, A., Hauser, J., & Schulze-Beckinghausen, P. (2014). Structured meshes and reliable CFD simulations: TwinMesh for positive displacement machines. In International screw compressor conference, TU Dortmund.
- Spille-Kohoff, A., Hesse, J., & El Shorbagy, A. (2015, August). CFD simulation of a screw compressor including leakage flows and rotor heating. In IOP Conference Series: Materials Science and Engineering (Vol. 90, No. 1, p. 012009). IOP Publishing. ([1])
External Links
* TwinMesh Homepage * CFX Berlin Homepage
