A numerical study of a thermocapillary flow in a thin circular pool under zero and normal gravity conditions was carried out to investigate the effect of free surface shape on flow direction. We have previously reported that the direction of a thermocapillary flow in a circular water film under zero gravity was dependent on the shape of the film. In the present study, we also found that the direction of the thermocapillary flow in a water pool is dependent on free surface shape even under normal gravity. This finding shows that we can control the direction of the flow in the pool by changing its free surface shape by varying the volume ratio of the pool.