边界元素法 meaning in Chinese
bem (= boundary element method)
boundary element method (bem)
Examples
- We use approximate method to fit the accurate results and find a fast and rather accurate way to design waveguide narrow - wall slots array
利用边界元素法即可求解出二维问题的解后再做逆fourier变换即可。 - All calculations are in the hypothesis of " ideal slot " , that is the slots are so narrow that longitudinal field along the slots can be ignored and all fields are independent about the z - coordinate
在当中忽略缝隙口面场随缝隙倾角变化而在z方向上产生的变化? ?即认为场量与z无关。在此前提下可以将三维问题简化为二维问题，用边界元素法直接求解。 - A new waveguide made of changing a wide wall of a rectangular waveguide to a uniform curved wall is called conformal waveguide . a kind of expression of approximate solution for domain mode of the new waveguide , including symmetric , unsymmetric arc , parabolic arch , hyperbolic arch , elliptic arch , etc . , is constructed by using boundary condition of mental waveguide , variational method and boundary element method . by using the equivalence principle , an approximate calculating formula for equivalent resonant conductance of a narrow longitudinal halfwavelength slot cut in the curved wall of the unsymmetric arcrectangular waveguide is derived , and the result is shown . although this solution is approximate , it can solve the problem in designing the slotted antenna of such conformal waveguide
把矩形波导一个宽面外突成均匀曲面构成的新波导统称为共形波导.利用金属波导边界条件、变分法、边界元素法构造这种新波导中主模场的一种近似解表达式，包括曲面横截线为对称、非对称圆弧，抛物线弧，双曲线弧，椭圆弧等.然后根据等效原理，推导非对称圆弧矩形波导曲面上窄的纵向半波长缝隙的等效谐振电导的近似计算公式，给出计算曲线.这种解虽然是近似的，但却能解决这类共形波导缝隙天线的工程设计