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This paper aims to study the configuration of two components caused byrotational and tidal distortions in the model of a binary system. Thepotentials of the two distorted components can be approximated to 2nd-degreeharmonics. Furthermore, both the accretion luminosity ($\sigma_{i}$) and theirradiative luminosity are included in stellar structure equations. Theequilibrium structure of rotationally and tidally distorted star is exactly atriaxial ellipsoids. A formula describing the isobars is presented, and therotational velocity and the gravitational acceleration at the primary surfacesimulated. The results show the distortion at the outer layers of the primaryincreases with temporal variation and system evolution. Besides, it wasobserved that the luminosity accretion is unstable, and the curve of theenergy-generation rate fluctuates after the main sequence in rotationsequences. The luminosity in rotation sequences is slightly weaker than that innon-rotation sequences. As a result, the volume expands slowly. Polar ejectionis intensified by the tidal effect. The ejection of an equatorial ring may befavoured by both the opacity effect and the $g_{e}(\theta,\varphi)$-effect inthe binary system.

Structure and evolution of rotationally and tidally distorted stars