论文标题
缩放引力深色流体宇宙的流体动力学演变
Scaling Hydrodynamical Evolution of a Gravitating Dark-fluid Universe
论文作者
论文摘要
我们提出了一个深色流体模型，其中包含状态的一般线性方程，包括重力项。使用SEDOV型时间依赖性的自相似{\ it ansatz}研究了获得的球形对称Euler方程，并研究了连续性方程，该方程能够描述物理相关的扩散和分散溶液。 ％研究参数在状态方程中的作用。作为结果，提出和分析了空间和时间依赖的流体密度和径向速度场。另外，讨论了初始速度在流体的动能密度和总能量密度上的作用。
We present a dark fluid model which contains the general linear equation of state including the gravitation term. The obtained spherical symmetric Euler equation and the continuity equation was investigated with the Sedov-type time-dependent self-similar {\it ansatz} which is capable to describe physically relevant diffusive and dispersive solutions. %The role of the parameter in the equation of state is investigated. As results the space and time dependent fluid density and radial velocity fields are presented and analyzed. Additionally, the role of the initial velocity on the kinetic and total energy densities of the fluid is discussed.
