关于色散流体的介电方程

指出了在宏观推导运动流体的非局域型材料关系时，所涉及到的局部静止坐标必须随同流体一起转动．为了确定它与实验室坐标之间的关系，描述流体状态的场变量，除平动速度外，还应有三个空间角度．这些角变量满足一组一般的偏微分方程．尽管本文的内容是针对简单的弛豫时间模型而给出的，其物理方法可适用于推导洛伦兹协变的、含任何复杂的色散和非线性项的材料方程 关键词：

ON DIELECTRIC RELATION OF DISPERSIVE FLUID

We show that in macroscopic derivation of nonlocal material relation for a moving fluid,the involved local rest frame should be rotated with the fluid together.To determine the- relationship between the local rest and laboratory frames,outside the velocity,there will appear- three space angles in the set of state variables for the fluid.They satisfy three general equations.Although this work is given for a simple model of relaxation time,the provided approaches- are general,and applicable for obtaining more complicated material relations with dispersion and nonlinearity,which are invariant under the Lorentz transformation.