Abstract
In “An Approach to Verification and Validation of MHD Codes for Fusion Applications” [S. Smolentsev et al., Fusion Eng. Des., Vol. 100, p. 65 (2015)], an effort for verification and validation of computer codes for liquid metal flows in a magnetic field for fusion cooling/breeding applications was initiated. The current study continues that effort. A group of experts in computational magnetohydrodynamics from several institutions in the United States and Europe performed a code-to-code comparison for the selected reference case of a mixed-convection buoyancy-opposed magnetohydrodynamic flow of eutectic lead-lithium (PbLi) alloy in a thin-wall conducting square duct at Hartmann number Ha = 220, Reynolds number Re = 3040, and Grashof number Gr = 2.88 × 107. As shown, the reference flow demonstrates a boundary layer separation in the heated region and formation of a reversed flow zone. The results of the comparison suggest that all five solvers predict well the key flow features but have moderate quantitative differences, in particular, in the location of the separation point. Also, two of the codes are more computationally dissipative, showing no velocity and temperature oscillations.
| Original language | English |
|---|---|
| Pages (from-to) | 653-669 |
| Number of pages | 17 |
| Journal | Fusion Science and Technology |
| DOIs | |
| State | Published - 2020 |
| Externally published | Yes |
Funding
The UCLA team (T. R., Y. Y., and S. S.) acknowledge financial support from U.S. Department of Energy grant DE‐FG02‐86ER52123. S. S. acknowledges support from from Oak Ridge National Laboratory subcontract number 4000171188. Part of this work performed by the European Union researchers has been carried out within the framework of the EUROfusion Cosnsortium and received funding from Euratom research and training programme 2014-2018 and 2019-2020 under grant agreement number 633053. The UCLA team (T. R., Y. Y., and S. S.) acknowledge financial support from U.S. Department of Energy grant DE?FG02?86ER52123. S. S. acknowledges support from from Oak Ridge National Laboratory subcontract number 4000171188. Part of this work performed by the European Union researchers has been carried out within the framework of the EUROfusion Cosnsortium and received funding from Euratom research and training programme 2014-2018 and 2019-2020 under grant agreement number 633053.
| Funders | Funder number |
|---|---|
| U.S. Department of Energy | DE‐FG02‐86ER52123, 86ER52123 |
| Oak Ridge National Laboratory | 4000171188 |
| University of California, Los Angeles | |
| Horizon 2020 Framework Programme | |
| H2020 Euratom | 633053 |
Keywords
- Liquid metal blanket
- MHD flows
- code verification and validation
- heat transfer
- high-performance computations
