Title :
Three-dimensional behavior of arc current near electrodes of MHD generator
Author :
Ishikawa, Motoo ; Itoh, Kazuya
Author_Institution :
Inst. of Eng. Mech. & Syst., Univ. of Tsukuba, Japan
Abstract :
Three-dimensional behavior of arc current near electrodes of Faraday-type MHD generator are studied by time-dependent three-dimensional numerical analyses. The Navier-Stokes equations are solved with an implicit TVD scheme with the radiative heat transfer solved by a finite volume method, while the Maxwell equations are solved by using the Galerkin FEM. In the case of the short-circuit load (I=160A), the present generator does not suffer from the inter-anode breakdown The Lorentz force working at the electrical current concentration at the cathode, on the other hand, brings the concentration current to the downstream, resulting in the strong inter-cathode breakdown.
Keywords :
Galerkin method; Maxwell equations; Navier-Stokes equations; anodes; arcs (electric); cathodes; finite element analysis; finite volume methods; magnetohydrodynamic convertors; thermal analysis; 160 A; Faraday-type MHD generator; Galerkin FEM; MHD generator electrodes; Maxwell equations; Navier-Stokes equations; anode; arc current 3D behaviour; cathode; finite volume method; implicit TVD scheme; inter-cathode breakdown; radiative heat transfer; short-circuit load; time-dependent three-dimensional numerical analyses; Electric breakdown; Electrodes; Finite volume methods; Heat transfer; Lorentz covariance; Magnetohydrodynamic power generation; Maxwell equations; Moment methods; Navier-Stokes equations; Numerical analysis;
Conference_Titel :
Power System Technology, 2002. Proceedings. PowerCon 2002. International Conference on
Print_ISBN :
0-7803-7459-2
DOI :
10.1109/ICPST.2002.1047583
