کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
271223 504990 2014 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Influence of surface oxidation on electric potential measurements in MHD liquid metal flows
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی مهندسی انرژی و فناوری های برق
پیش نمایش صفحه اول مقاله
Influence of surface oxidation on electric potential measurements in MHD liquid metal flows
چکیده انگلیسی

Experimental investigations for magnetohydrodynamic flows in rectangular ducts are performed using GaInSn as model fluid. Measurements of electric potential on channel walls and inside the flow show reproducible discrepancies compared to analytical results. These discrepancies can be ascribed to the formation of oxide layers causing a contact resistance between the electrically conducting duct walls and the liquid metal. An exact analytical solution for pressure drop, velocity and potential distributions has been derived taking into account the presence of a contact resistance. Analytical results for velocity and potential profiles and for pressure drop are discussed for different values of contact resistance and strength of the applied magnetic field. A comparison of measured potential with data from the analytical solution allows estimating the order of magnitude of the contact resistance in the present experiments.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Fusion Engineering and Design - Volume 89, Issues 7–8, October 2014, Pages 1299–1303
نویسندگان
, , ,