一类非理想流体Einstein场方程精确解

SOME EXACT SOLUTIONS OF EINSTEIN FIELD EQUATION FOR IMPERFECT FLUID

研究了满足一组热力学关系的粘滞电磁流体动力学的流体的场方程，显示出Einstein-deSitter模型是这组场方程的精确解．这解是径向流动流体的解，满足所有必需的物理条件．

The field equation for a viscous magnetohydrodynamic fluid satisfying an appro -priate set of thermodynamic relations is investigated. It is shown that Einstein-de Sitter model can be exact solution to this system of equations. The solution in which the spacelike component of the tilting velocity vector is radially directed is discussed. The solution presented satisfies all the necessary conditions for physical acceptability.