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Both numerical simulations and observations indicate that in anadvection-dominated accretion flow most of the accretion material supplied atthe outer boundary will not reach the inner boundary. Rather, they are lost viaoutflow. Previously, the influence of outflow on the dynamics of inflow istaken into account only by adopting a radius-dependent mass accretion rate$\dot{M}=\dot{M}_0 (r/r_{\rm out})^s$ with $s>0$. In this paper, based on a 1.5dimensional description to the accretion flow, we investigate this problem inmore detail by considering the interchange of mass, radial and azimuthalmomentum, and the energy between the outflow and inflow. The physicalquantities of the outflow is parameterized based on our current understandingsto the properties of outflow mainly from numerical simulations of accretionflows. Our results indicate that under reasonable assumptions to the propertiesof outflow, the main influence of outflow has been properly included byadopting $\dot{M}=\dot{M}_0 (r/r_{\rm out})^s$.

The Influences of Outflow on the Dynamics of Inflow