Numerical study on flow characteristic of the KSTAR PF cryogenic loop using supermagnet code
| Autor: | Dong-Keun Oh, Hyunjung Lee, Sang Jun Oh, Laurent Jung |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Electromagnet
Mechanical Engineering Nuclear engineering Flow (psychology) Full scale chemistry.chemical_element Superconducting magnet 01 natural sciences 010305 fluids & plasmas law.invention Nuclear Energy and Engineering chemistry law Electrical equipment KSTAR Magnet 0103 physical sciences General Materials Science 010306 general physics Helium Civil and Structural Engineering |
| Zdroj: | Fusion Engineering and Design. 125:165-170 |
| ISSN: | 0920-3796 |
| DOI: | 10.1016/j.fusengdes.2017.09.011 |
| Popis: | Operation stability study for a large-scale superconducting magnet is of particular importance to protect the magnet from permanent damage. Especially, for a fusion magnet, severe heat load by AC loss needs to be effectively removed during operation to achieve required temperature margin. A unique feature of KSTAR PF (poloidal field) magnet is that all the supercritical helium inlets and outlets of PF1 ∼ 4UL (PF upper and lower) coils are located at high field region. Therefore, major heat loads are localized both at the inlets and outlets, so that a drastically reduced or even no temporal cryogen flow is frequently observed at the inlets of PF1 ∼ 4UL coils. This kind of temporal blockage of cryogenic loop can seriously affect the thermo-hydraulic analysis of a superconducting magnet system. As a preliminary study on this issue, we compared thermos-hydraulic analysis results of a simplified PF1UL model with a semi full scale PF1 ∼ 4UL model by using the SUPERMAGNET code. The numerical simulations were also compared to empirical results. |
| Databáze: | OpenAIRE |
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