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A spherical superconducting rotor is spinning at low temperature of 4.2 K. The electromagnetic field generated by the stator coils engenders driving torque on the superconducting rotor through the window on the window side wall. The driving torque at different rotation position was calculated by using finite element analysis (FEA). The results show that the driving torque is changed periodically when...
Computed Tomography angiography has become a major diagnostic imaging technique in patients suspected of having aortic diseases. However, aortic CTA needs a long scanning range, usually from subclavian artery to the origin of femoral arteries, which therefore includes high radiation dose. Besides of diagnostic value, aortic CTA is also used for follow-up as well as pre- and post-operative assessment...
Study of CO2 in-tube flow boiling heat transfer character and precise prediction of its heat transfer coefficient is essential for the design of a compact and efficient evaporator. Several correlations for flow boiling heat transfer of CO2 published were discussed in this paper and compared with available experimental results in the literature. The effect of mass velocity, saturation temperature,...
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