Lecture 22.pptx - Lecture 22 CBE 218 Fluid Mechanics COMSOL...

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Lecture 22 CBE 218 Fluid Mechanics March 18, 2015
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Consider two immiscible and viscous liquids flowing at 300 k in z-direction In a thin horizontal slit of width 0.5 m and height of 0.1 m under the influence of A pressure gradient. Both liquids can be considered as incompressible. At the Inlet both liquids can be assumed to have the same pressure of 0.02 Pa. 1. Consider water and transformer oil 2. Determine the corresponding velocity profile for each fluid. 3. Identify a software window showing Navier-Stokes equation 4. Generate detail report. COMSOL
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water oil Left and rt clik to remove water from the lower rectangle Left and rt clik to remove water from the lower rectangle
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water oil Next – laminar flow, Left click to see equations, type incompressible flow
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Fluid properties Change T to 300 K Rt click laminar flow, select ‘inlet’ boundary condition and apply to leftmost surfaces Change boundary condition to ‘pressure no viscous stress’ by left clicking drop down
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