Multi-Region OpenFOAM Solver Development for Compact Toroid Transport in Drift Tube
Compact toroid (CT) injection, with its characteristics of high plasma density and extremely high injection velocity, is considered a highly promising method for core fueling in fusion reactors. Previous studies have lacked investigation into the transport process of CT within drift tubes. To invest...
Saved in:
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2025-07-01
|
| Series: | Applied Sciences |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2076-3417/15/13/7569 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1839632330085367808 |
|---|---|
| author | Kun Bao Feng Wang Chengming Qu Defeng Kong Jian Song |
| author_facet | Kun Bao Feng Wang Chengming Qu Defeng Kong Jian Song |
| author_sort | Kun Bao |
| collection | DOAJ |
| description | Compact toroid (CT) injection, with its characteristics of high plasma density and extremely high injection velocity, is considered a highly promising method for core fueling in fusion reactors. Previous studies have lacked investigation into the transport process of CT within drift tubes. To investigate the dynamic processes of CT in drift tubes, this study developed a compressible magnetohydrodynamics (MHD) solver and a magnetic diffusion solver based on the OpenFOAM platform. They were integrated into a multi-region coupling framework to create a multi-region coupled MHD solver, mhdMRF, for simulating the dynamic behavior of CT in drift tubes and its interaction with finite-resistivity walls. The solver demonstrated excellent performance in simulations of the Orszag–Tang MHD vortex problem, the Brio–Wu shock tube problem, analytical verification of magnetic diffusion, and validation of internal coupling boundary conditions. Additionally, this work innovatively explored the effects of the geometric structure at the end of the inner electrode and finite-resistivity walls on the transport processes of CT. The results indicate that optimizing the geometric structure at the end of the inner electrode can significantly enhance the confinement performance and stability of CT transport. The resistivity of the wall profoundly influences the magnetic field structure and density distribution of CT. |
| format | Article |
| id | doaj-art-d261aec55c7b478889a74c9faebf453e |
| institution | Matheson Library |
| issn | 2076-3417 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj-art-d261aec55c7b478889a74c9faebf453e2025-07-11T14:37:01ZengMDPI AGApplied Sciences2076-34172025-07-011513756910.3390/app15137569Multi-Region OpenFOAM Solver Development for Compact Toroid Transport in Drift TubeKun Bao0Feng Wang1Chengming Qu2Defeng Kong3Jian Song4School of Physics, Dalian University of Technology, Dalian 116024, ChinaSchool of Physics, Dalian University of Technology, Dalian 116024, ChinaInstitute of Energy, Hefei Comprehensive National Science Center (Anhui Energy Laboratory), Hefei 230031, ChinaInstitute of Energy, Hefei Comprehensive National Science Center (Anhui Energy Laboratory), Hefei 230031, ChinaSchool of Physics, Dalian University of Technology, Dalian 116024, ChinaCompact toroid (CT) injection, with its characteristics of high plasma density and extremely high injection velocity, is considered a highly promising method for core fueling in fusion reactors. Previous studies have lacked investigation into the transport process of CT within drift tubes. To investigate the dynamic processes of CT in drift tubes, this study developed a compressible magnetohydrodynamics (MHD) solver and a magnetic diffusion solver based on the OpenFOAM platform. They were integrated into a multi-region coupling framework to create a multi-region coupled MHD solver, mhdMRF, for simulating the dynamic behavior of CT in drift tubes and its interaction with finite-resistivity walls. The solver demonstrated excellent performance in simulations of the Orszag–Tang MHD vortex problem, the Brio–Wu shock tube problem, analytical verification of magnetic diffusion, and validation of internal coupling boundary conditions. Additionally, this work innovatively explored the effects of the geometric structure at the end of the inner electrode and finite-resistivity walls on the transport processes of CT. The results indicate that optimizing the geometric structure at the end of the inner electrode can significantly enhance the confinement performance and stability of CT transport. The resistivity of the wall profoundly influences the magnetic field structure and density distribution of CT.https://www.mdpi.com/2076-3417/15/13/7569MHDcompact toroidmulti-regionOpenFOAMCFDfinite-resistivity wall |
| spellingShingle | Kun Bao Feng Wang Chengming Qu Defeng Kong Jian Song Multi-Region OpenFOAM Solver Development for Compact Toroid Transport in Drift Tube Applied Sciences MHD compact toroid multi-region OpenFOAM CFD finite-resistivity wall |
| title | Multi-Region OpenFOAM Solver Development for Compact Toroid Transport in Drift Tube |
| title_full | Multi-Region OpenFOAM Solver Development for Compact Toroid Transport in Drift Tube |
| title_fullStr | Multi-Region OpenFOAM Solver Development for Compact Toroid Transport in Drift Tube |
| title_full_unstemmed | Multi-Region OpenFOAM Solver Development for Compact Toroid Transport in Drift Tube |
| title_short | Multi-Region OpenFOAM Solver Development for Compact Toroid Transport in Drift Tube |
| title_sort | multi region openfoam solver development for compact toroid transport in drift tube |
| topic | MHD compact toroid multi-region OpenFOAM CFD finite-resistivity wall |
| url | https://www.mdpi.com/2076-3417/15/13/7569 |
| work_keys_str_mv | AT kunbao multiregionopenfoamsolverdevelopmentforcompacttoroidtransportindrifttube AT fengwang multiregionopenfoamsolverdevelopmentforcompacttoroidtransportindrifttube AT chengmingqu multiregionopenfoamsolverdevelopmentforcompacttoroidtransportindrifttube AT defengkong multiregionopenfoamsolverdevelopmentforcompacttoroidtransportindrifttube AT jiansong multiregionopenfoamsolverdevelopmentforcompacttoroidtransportindrifttube |