Field measurements using a two-component dual beam laser velocimeter, in both backscatter and forward scatter modes, were made at the diffuser exit of a coal-fired magnetohydrodynamic (MHD) channel under a very harsh flow environment with restricted space availability and port accessibility. The measurements are the first of their kind since no previous velocity measurements at the coal-fired facility, either intrusive or nonintrusive, have been performed. The results serve as a data base for the engineering design of MHD flow train components and also for theoretical modeling. Presented in this paper are the profiles of the mean velocities and the turbulence levels and spectral characteristics of the flow. This paper also highlights some of the practical problems encountered in making the laser velocimetry measurements under conditions of a harsh environment such as MHD flows.
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