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This paper shows a self-exchange system to supply liquid fuel and to exhaust CO2 spontaneously for micro direct methanol fuel cell (muDMFC). The system performs effectively and continuously without any circulation loops and external pumps. The fuel is carried to the anode due to capillary force. The system is consisted of a hydrophobic porous membrane and two comb-shape channels. It was confirmed...
Three approaches have been proposed for enhancing the accuracy of the inner-point formula of the boundary element method. The results of computations show that the proposed approaches are suitable for accurate computations of the numerical solution in the vicinity of the boundary
The numerical code has been developed for simulating the time evolution of the shielding current density in the high-temperature superconducting thin film. When the governing equation of the shielding current density is discretized by use of the finite element method and the completely implicit method, singular integrals appear as coefficients of the nonlinear system. In order to evaluate the coefficients...
The new meshless methods have been proposed by choosing the trial and test functions from a variety of the functional spaces. The accuracy of the proposed methods is evaluated for two imposing methods of the essential boundary conditions. The results of computations show that the type of the test functions does not influence on the accuracy. In contrast, the weight functions should not be chosen as...
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