Flashover voltage of PE300 insulators embedded in liquid nitrogen with and without gas bubbles

Fink, S.; Zwecker, V.

doi:10.1109/icd.2016.7547796

Cited by 6 publications

(1 citation statement)

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“…A large number of suspended nitrogen bubbles will be produced when superconductors are quenched. Bubbles tend to deform and coalesce under the action of the electric field, which seriously affects the insulation performance of liquid nitrogen [1][2][3][4].…”

Section: Introductionmentioning

confidence: 99%

Research on 3D Improved Extended Finite Element Method for Electric Field of Liquid Nitrogen with Bubbles

Duan

et al. 2021

Applied Sciences

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In this paper, the improved extended finite element method (XFEM) for analyzing the three-dimensional (3D) electric field is presented. The interface between two media is described by using a four-dimensional (4D) level set function. For elements with multiple interfaces, the local level set method is used to improve the accuracy. By using weak discontinuous enrichment function and moving level set function, the interpolation function is modified. The new interpolation function makes it unnecessary to repeat the mesh generation when a moving interface occurs. The cost of calculation is greatly reduced. The reliability of 3D improved XFEM in the electric field is verified through numerical calculation examples of single bubble, multi-bubbles, and moving deformed bubble in liquid nitrogen.

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Section: Introductionmentioning

confidence: 99%