Generally, Probe B reveals more prominent fluctuations than
Probe A, and the general mixing trend differs noticeably with each
other. This is because Probe B is close to the impeller region with
an intense turbulent activity, while Probe A is far away from it. As
shown in Fig. 3, the concentration remains 0 until t¼1.09 s for
Probe A, and t¼0.65 s for Probe B, which is the time required for
the tracer to travel from the injection point to the respective
monitor location. For Probe B the peaks, which are closely related
to the time period that the tracer is present close to the probe
because it has been captured by the lower recirculation zone and
returns to the probe, appear at around 1.25,
1.59 and 2.30 s. The information of this type can be very
important where reactions are involved since the reaction rates
depend on the local concentrations of reactants.
Generally, Probe B reveals more prominent fluctuations than
Probe A, and the general mixing trend differs noticeably with each
other. This is because Probe B is close to the impeller region with
an intense turbulent activity, while Probe A is far away from it. As
shown in Fig. 3, the concentration remains 0 until t¼1.09 s for
Probe A, and t¼0.65 s for Probe B, which is the time required for
the tracer to travel from the injection point to the respective
monitor location. For Probe B the peaks, which are closely related
to the time period that the tracer is present close to the probe
because it has been captured by the lower recirculation zone and
returns to the probe, appear at around 1.25,
1.59 and 2.30 s. The information of this type can be very
important where reactions are involved since the reaction rates
depend on the local concentrations of reactants.
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