The estimation of fluid temperatures through an inverse heat conduction technique

Transient, internal temperatures within an instrumented probe are considere d as part of an inverse heat conduction problem (IHCP) to compute the tempe rature of the surrounding fluid. A linear scheme is used where the exchange coefficients are treated as known parameters. Input data to the IHCP have been generated numerically. When these are unco rrupted, the inverse algorithm works well without stabilization. However, i n practice the algorithm must be stabilized, as it is shown that noise is a mplified substantially. It becomes necessary both to parameterize spatial v ariations in the fluid temperature and to utilize a functional specificatio n method to address the noncausal solution.