411-201 Transport Phenomena 1

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Objectives:

Upon completion of this unit the students will:

• have a basic understanding of the fundamental concepts involved in momentum, heat and mass transfer, in simple fluids;

• be able to solve simple problems involving transport of heat, mass and momentum in industrial situations.

Content:

Momentum Transport: Newton's law of viscosity, discussion of viscosity of gases and liquids. Introduction to non-Newtonian fluids. Shear stress and momentum flux, shell balances in laminar flow. Introduction to turbulence and the boundary layer.

Heat Transport: Description of conduction, convection and radiation. Fourier's law of conduction, discussion of thermal conductivity of gases, liquids and solids. Application to steady state conduction through planar and cylindrical resistances, shell balances, heat sources and sinks. Calculations of temperature profile in conductors. Derivation of the Laplace equation and description of typical boundary conditions, solutions for fins. Derivation of the diffusion equation and examples of its use. Discussion of solution techniques including lumped parameter approach, Heisler charts and numerical techniques. Convection, thermal boundary layers, definition and evaluation of heat transfer coefficients.

Mass Transport: Fick's first law, definition and use of driving forces, (mass, molar, volume etc.), average velocity and fluxes. Discussion of diffusivities and applications to steady state diffusion problems. Application to binary mixtures, equimolar counter diffusion and stationary component diffusion. Mechanisms of mass transfer; molecular and eddy diffusion.

Examples to be drawn from a large cross section of potential applications in the process industries.

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