The objective of this paper is to decompose the unsteady force on the rotor of a stator/rotor axial compressor into vortical and potential contributions, for axial gaps of 10, 20, and 30% chord between blade rows. Three methods of decomposition are proposed. The nal method adopted requires two steps. First, the potential contributed gust within the gap region is found using a panel code for stator/rotor con guration and the vortical contributed gust from the difference between that calculated by a Navier
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Wo et al. (1997) studied this question.
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