Learning objectives
The student will acquire the basic knowledge of the Gas Kinetic Theory and of the transport processes of fluids. A number of applications will also be illustrated, speciallly in the ambit of the chemical kinetics.
Prerequisites
Mathematics and Physics courses present in the program of studies. The student should also have attended the Physical Chemistry 1 course.
Course unit content
<br />Gas Kinetic Theory<br />The model. The pressure. The Maxwell equation. Molecular collisions and free mean pathway. Collisions against a wall and effusion. The Graham law.<br />Transport processes in gases.<br />Viscosity, thermal conducibility and diffusion. The unified model. Real gases: Lennard-Jones and Stockmayer potentials.<br />Properties of liquids.<br />Density, comprimibility and viscosity. Newtonian and non-Newtonian fluids. Thixotropy. The Poiseulle law. The measurement of the viscosity of liquids. Viscosity of solutions. Polymers in solution: the Einstein model. Theta solvents and temperatures. Mark-Houwink equation. Motion of fluids: the energy balance equation, the continuity equation, the Navier-Stokes, Eulero, Bernoulli equations. Dissipation of energy. Motion of fluids in pipes: the mechanical balance equation. The Reynolds experiment. Dimensional analysis: general outline. The case of the motion of fluids in pipes: Eulero and Reynolds numbers. The Fanning equation and the Moody's diagram. The Theory of Similitude (short notes). Non isothermal laminar flux. Turbulent flux. Turbulent viscosity. Isothermal flux of non viscous fluids. Filtration.<br />Transport of heat.<br />Cunduction, convection and irradiation. Stationary conduction: the Fourier law and its applications. Non stationary conduction: Fourie-Poisson law and applications. Convection: the liminar coefficient. Natural and forced convection. Irradiation: the black body and the Kirchoff law. <br />Mass transport.<br />Diffusive fluxes. First and second Fick law. Stationary and non stationary diffusion. Diffusion and turbulent flux.<br />Compressors. Ideal cycle, effect of the noxious space. Thermal engine: thermodynamics quantities and principles. Carnot direct and inverse cycle. Refrigeration. Inverse Rankine cycle. <br />Heterogeneous catalysis<br />External diffusion. Oxidation reaction of NH3 on Pt. Internal diffusion: mass and Knudsen diffusion. Thiele modulus. Non isothermal catalytic particles. Internal and external diffusion and reaction kinetics.
Full programme
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Bibliography
<br />L. Forni - Fenomeni di Trasporto -Libreria Cortina Milano 1979<br />S. Carrà, L. Forni - Aspetti cinetici della Teoria del reattore chimico - Tamburini Ed. 1972<br />P. Atkins, J. de Paula - Chimica Fisica - Zanichelli Ed. 2004
Teaching methods
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Assessment methods and criteria
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Other information
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