According to the theory of analogy between heat transfer and mass transfer

the mass transfer technique is applied to a shrouded rotor-stator system for experimental

investigation on its heat transfer.An experimental model is set up:The cooling air is blown axially from the front edge of the stator

and the naphthalene(C10H8) sublimation technique is employed to obtain both local and average mass-transfer coefficients for the rotor surface coated by naphthalene.The heat transfer characteristics of the shrouded rotor-stator system are investigated using the mass transfer analog technique.The emphasis is put on analyzing the effects of the following parameters on the transfer characteristics:The ratio of axial gaps Gs 、 the ratio of axial clearance Gc 、the rotational Reynolds number Reθ and flow coefficient Cw .Correlations are obtained experimentally

conclusions are drawn for the test conditions as follows:1.The average mass transfer coefficient increases with increase of the flow coefficient Cw and the rotational Reynolds number Reθ ;2.The average mass transfer coefficient decreases with increase of the ratio of axial gap Gs and the ratio of axial clearance Gc ;3.The peak of local mass transfer coefficient radically moves out with reference to impingement point.