Describe:The characteristics of boundary layers in turbulent flows and describe which type of averaging process would...

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Mechanical Engineering

Describe:
The characteristics of boundary layers in turbulent flows anddescribe which type of averaging process would most represent thisflow simulation (mass versus time average, and corresponding modelexamples such as Crank-Nicolson, D)uFort-Frankel...)
The differences between mass and time average (give examples ofeach)
The attributes properties of the thin-shear layer (TSL)approximation and the attributes of boundary layer (BL)approximation.
The different driving source terms for the momentum and energyequations

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4.3 Ratings (618 Votes)

A A boundary layer may be laminar or turbulent A laminarboundary layer is one where the flow takes place in layers ieeach layer slides past the adjacent layers This is in contrast toTurbulent Boundary Layers shown in Figure belowTurbulent flow is characterized by velocity fluctuations andhighly disordered motion Most flows encountered in practice areturbulent Turbulent flow occurs when streamlines of the liquid areirregular and change over time The See Answer

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