摘要
根据磁化等离子体的色散特性,给出了一种计算各向异性介质的改进的移位算子有限差分(Shift-Op-erator Finite Difference Time-domain,SO-FDTD)方法.该方法从Maxwell方程组入手,结合极化电流密度与磁化等离子体各参数的关系,推导得出电流密度的差分方程表达式,进而求出电场的差分迭代方程.应用该方法计算了磁化等离子体平板的反射、透射系数,通过与解析法和辅助方程法(Auxiliary Difference Equantion,ADE)的比较,验证了该算法的高效性和准确性.
An improved SO-FDTD method for anisotropic medium is presented out according to the dispersion characteristic of magnetized plasma. By taking Maxwell equations as departure point and combining the relations polarization current density and plasma parameters,the difference equation expresses of current density are derived and obtained,and then difference iterations of E are yielded. This method is applied to calculate the reflection and transmission coefficients of magnetized plasma flat,and the high efficiency and accuracy of the method are validated by compared to analytical method and Auxiliary Difference Equantion （ADE） method.
出处
《河南师范大学学报（自然科学版）》
CAS
CSCD
北大核心
2010年第1期75-77,81,共4页
Journal of Henan Normal University(Natural Science Edition)
