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A new numerical algorithm for calculating isothermal wind accretion flows hasbeen developed and is applied here to the analysis of the hydrodynamics oftwo-dimensional plane symmetric accretion flows in wind-fed sources. Polarcoordinates are used to ensure fine resolution near the object. It is foundthat a thin accretion column is formed which shows wave-like oscillations.Small accretion disks are formed temporarily around the object. Mass accretionrate and angular momentum accretion rate exhibit quasi-periodic oscillations.The amplitudes of the oscillations depend on the size of the inner boundary,the number of grid points and the method of calculation. For a smaller size ofthe inner boundary, finer grids and more accurate numerical schemes, theamplitudes of the oscillation become larger.

Numerical Computation of Two-Dimensional Wind Accretion of Isothermal GAS