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04294 - Fluid Mechanics

Academic Year 2018/2019

                
                        Docente:
                        Irene Daprà
                    
                        Credits:
                        6
                    
                        SSD:
                        ICAR/01
                    
                        Language:
                        Italian
                    
                        Moduli:
                        
                            Irene Daprà
                            (Modulo 1)
                        
                            Massimo Guerrero
                            (Modulo 2)
                        
                        Teaching Mode:
                        
                                    Traditional lectures (Modulo 1)
                                
                                    Traditional lectures (Modulo 2)
                                
                            Campus:
                            Forli
                        
                            Corso:
                            First cycle degree programme (L) in
                            Mechanical Engineering (cod. 0949)

                            Teaching resources on Virtuale

Learning outcomes

The Student acquires basic elements of Fluid Mechanics aiming to analize and solve typical problems of fluid plants and machinery.

Course contents

▪ Introduction: technical problems regarding fluids, flow description.

▪ Dimensional analysis. Buckingham theorem.

▪ Continue medium scheme.

▪ Static of fluid. Hydrostatic forces on plane and curved surfaces.

▪ Rigid body motion.

▪ Kinematics of fluids. Flow description, Eulerian and Lagrangian approaches. Velocity. Stream-line and stream function. Total derivative.

▪ Continuity and momentum equation.

▪ Inviscid flow: Euler equation. Bernoulli equation.

▪ Introduction to hydraulic machinery, characteristic numbers, cavitation and NPSH.

▪ General equation of motion for a viscous fluid. Viscous plane and pipe flow. Introduction to lubrification theory.

▪ Laminar and turbulent flow. Steady pipe flow. Friction and local losses. Moody chart. Flow in non cylindrical ducts. Analysis and design of pipe and duct systems.

▪ Some applications of momentum equation.

▪ Laminar and turbolent pipe flow of a gas.

▪ Waterhammer analysis.

Readings/Bibliography

Marchi - Rubatta Meccanica dei fluidi Utet

Citrini - Noseda Idraulica Ed. Ambrosiana Milano

Mott Applied Fluid Mechanics Pearson

Çengel - Cimbala Meccanica dei fluidi (Ed. it. Cozzo-Santoro) McGraw-Hill

Teaching methods

The course is composed of lectures and class exercises.

Assessment methods

The assessment is done through an oral test during which the student is called to explain concepts, demonstrations and principles concerning the behavior of fluids; furthermore, the candidate must demonstrate to be able to correctly frame and solve problems related to the static and the motion of fluids in various situations.

Grades are expressed in thirtieths: the minimum grade for passing the exam is 18/30, the maximum mark is 30/30 with honors. In order to pass the exam, the student must demonstrate sufficient knowledge of all the subjects and not present significant gaps.

The calendar of oral tests and written tests is published well in advance on the AlmaEsami web platform of the University of Bologna. Students intended to take the test must first register on the list of the chosen exam, then, show a document of recognition on the day of the exam.

Teaching tools

Class lectures with auxiliary documentsprovided by the teacher

Office hours

See the website of Irene Daprà

See the website of Massimo Guerrero