Abstract
In the nuclear fusion reactor, due to the influence of a strong magnetic field, the flow of liquid metal presents the characteristics of a quasi-two-dimensional flow. Based on the SM82 model, a numerical study is conducted on the flow in a sudden expansion duct under different magnetic field intensity. The results show that as the magnetic field strength increases, the flow changes from an unstable state to a stable state, and the shedding of shear vortices gradually disappears. As the longitudinal size of the shear vortex becomes narrower, the transverse correlation scale becomes longer, and the characteristics frequency of shear layer tends to be consistent. At the same time, the interaction between the shear vortex and the wall surface is the main factor affecting the heat transfer of the duct. With the increase of the magnetic field strength, the average Nusselt number (Nu) of the wall gradually decreases, and the heat transfer efficiency decreases.
| Translated title of the contribution | Influence of the High Magnetic Fields on the Shear Layer of Liquid Metal Sudden Expansion Flow |
|---|---|
| Original language | Chinese (Traditional) |
| Pages (from-to) | 2672-2680 |
| Number of pages | 9 |
| Journal | Kung Cheng Je Wu Li Hsueh Pao/Journal of Engineering Thermophysics |
| Volume | 42 |
| Issue number | 10 |
| State | Published - Oct 2021 |
| Externally published | Yes |