Top: flow structure in the y = 0 plane for different EoS after 7.5 orbits. The colourmap shows the temperature at y = 0. The white arrow on top of the velocity field plots corresponds to the magnitude of a 50 km s⁻¹ velocity vector. In the three images we can observe the wind leaving the donor star radially at x = 1 AU. The accretor star is located at x = −2 AU. For model T1, the temperatures reached in the region near the companion star are very high preventing material to settle into an accretion disk. Bottom: gas density in the orbital plane (z = 0) is shown. The accretor is located at x = −2, y = 0, and the AGB star at x = 1, y = 0. In the middle panel we see that for the isothermal EoS (T2) gas in the vicinity of the accretor settles into an accretion disk. When cooling is included (T3), an accretion disk around the companion is also formed.