TECHNICAL PHYSICS I
Learning outcomes of the course unit
To introduce the students to the basic concepts of thermodynamics and fluid flow applied to the analysis of the transformation of energy (thermal and mechanical).
Basic elements of Mathematics.
Course contents summary
Thermodynamics. Definitions: systems and properties. Units (SI). Closed and open systems. Forms of energy. First Law. Second law. Entropy. Irreversibility. Closed systems: conservation of mass, conservation of energy. Open systems: definitions, conservation of mass, conservation of energy, steady and transient processes. Properties of pure substances, equilibrium diagrams (p,v) (p,T). Incompressible substances and their properties. Vapours: quality and other properties. Ideal gas. Thermal cycles. Carnot cycle. Refrigeration cycle. Coefficient of performance. Simple multicomponents systems. Ideal gases mixtures. Mixtures of air and water vapour. Specific umidity. Psicrometric diagram.
Fluid flow: Physical aspect of the fluid flow. Coefficient of viscosity. Laminar and turbulent flow. Boundary layer. Reynolds number. Fluid flow in pipes. Integral equations Energy balance equation. Bernoulli equation. Friction losses. Velocity and mass flow rate measurements in fluids.
A. COCCHI: "Elementi di termofisica generale e applicata", Società Ed. Esculapio, Bologna, 1990.
Exam: written and oral examination.