The spin coating of wetting liquid on an axisymmetrically and radially heated disk is studied numerically under lubrication and zero Biot number assumptions. Our results show that both thermocapillarity (temperature dependent surface tension) and thermoviscosity (temperature dependent viscosity) effects can be harnessed to enhance the depletion rate of the spin coated liquid film if the disk center is hot. When the applied radial temperature profile has a steep change, an anchored shock wave is generated with a strength determined by the temperature induced viscosity change.
Volume Subject Area:
Fluids Engineering
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