Polymer Effects on Heat Transport in Laminar Boundary Layer Flow

Details Polymer Effects on Heat Transport in Laminar Boundary Layer Flow Polymer Effects on Heat Transport in Laminar Boundary Layer Flow

2011-04-21

arxiv.org/abs/1104.4230v2

Nonlinear Sciences

Chaotic Dynamics

4 pages, 4 figures; added and updated references

Scientific paper

We consider a laminar Blasius boundary-layer flow above a slightly heated horizontal plate and study the effect of polymer additives on the heat transport. We show that the action of the polymers can be understood as a space-dependent effective viscosity that first increases from the zero-shear value then decreases exponentially back to the zero-shear value as one moves away from the boundary. We find that with such an effective viscosity, both the horizontal and vertical velocities near the plate are decreased thus leading to an increase in the friction drag and a decrease in the heat transport in the flow.

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