A procedure to study tracer dispersion was proposed and tested for the case of tracer spreading in tube flow. Concentration maps of paramagnetic tracers Gd3+ were measured in time through direct measurements of spin lattice relaxation time T1 obtained by using a two-point stimulated echo pulse sequence. The procedure was used to test the linear dependence of Peclet number on inverse velocity in the range of flow rates 0.3-1.2 cc/min.
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Acknowledgments—This work was sponsored in part by the Army High Performance Computing Research Center under the auspices of the Department of the Army, Army Research Laboratory Cooperative Agreement No. DAAAH04-95-2-0003/Contract No. DAAH04-95-C-0008, the content of which does not necessarily reflect the position or the policy of the goverment, and no official endorsement should be inferred.
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