By using the WKB method and slowly-varying wave packet theory the main cause for the size change in Tropical Cyclone is analyzed.
应用小参数方法和缓变波包理论分析了热带气旋尺度变化的主要原因。
From the results, we may draw that the generalized WKB is the development of WKB method with greater dominance in solving the problems with nonlinear wave number.
结果表明:广义WKB法是WKB法的一种推广,在求解非线性波数问题时具有更好的优势。
Therefore, the WKB method is useful in the non - even wave guide.
因此,可以把WKB方法直接用到非均匀波导中。
However, after a very long time the component associated with the discrete spectra becomes dominant, and the results obtained by WKB method might no longer be valid.
但当在经过很长时段之后,由于和离散谱部分相对应的扰动占主要地位,WKB方法所得结论可能不再成立。
It is pointed out that the WKB method can be applied to a wider kind of partial differential equations. The method is applied to linearized shallow water wave equations.
本文首先指出WK B方法可适用于更广泛的一类方程,并把它应用于线性化浅水波方程。
In this paper, the WKB method and the finite-difference time-domain (FDTD) method are applied to study the electromagnetic characteristics of target coated with different plasmas.