Noncircular duct hot patch data, extensively referred to in the literature, have been found to be in error. When these data are corrected and compared with predictions of hot patch dryout using the most recent form of the Tong F factor, it is found that physically unintelligible results are obtained. It is not clear whether the Tong F factor, the method of predicting the equivalent uniform dryout flux, or the method of reducing the hot patch dryout data is at fault.

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