Figure 2: Schematic of the experimental set-up and upconversion luminescence measurements of the NaYF 4:Yb/Er@NaYF 4 nanofluid. Figure 3: Time-dependent temperature profile of the NaYF 4:Yb/Er@NaYF 4 ...
When a fluid is in motion, it must move in such a way that mass is conserved. To see how mass conservation places restrictions on the velocity field, consider the steady flow of fluid through a duct ...
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