# AERODYNAMICS

_
iten
Code
65906
2019/2020
CREDITS
6 credits during the 2nd year of 9270 Mechanical Engineering - Energy and Aeronautics (LM-33) GENOVA
SCIENTIFIC DISCIPLINARY SECTOR
ING-IND/06
LANGUAGE
Italian
TEACHING LOCATION
GENOVA (Mechanical Engineering - Energy and Aeronautics)
semester
1° Semester
Teaching materials

OVERVIEW

"The term aerodynamics is generally used for problems arising from flight and other topics involving the flow of air"

Ludwig Prandtl, 1949

## AIMS AND CONTENT

LEARNING OUTCOMES

he course aims at providing the basis of the aerodynamics of bodies moving in a fluid at subsonic speed, employing mainly the concepts of boundary layer and velocity potential, and putting emphasis on forces and moments acting on the body. Computational fluid dynamics (CFD) applications will also be proposed on the basis of the Fluent and/or OpenFOAM codes.

AIMS AND LEARNING OUTCOMES

At the end of the course the student will have acquired a solid knowledge of the effects of fluid forces onto solid bodies in motion, for both airfoils (2D) and wings (3D), and will be capable of developing (i) simple models to extract salient features of the fluid/solid interaction, as well as (ii) more complex computational aerodynamics calculations.

Teaching methods

The course will consist mainly of lectures and applications of the concepts learned in class to the solution of practical aerodynamics problems. The second part of the course will consist mostly in practical experience in the computer room with open-source and commercial CFD codes.

SYLLABUS/CONTENT

• Introduction to Aerodynamics

-     Vorticity Dynamics

Vorticity and circulation; The vorticity equation; Generation of vorticity in incompressible flows

•  Ideal Fluids and Irrotational Flows

Plane potential flows, Conformal mapping and Joukowsky transformation, Potential flow around a cylinder; Lifting airfoils, Joukowsky airfoils; Potential flow around a two-dimensional body of arbitrary shape;Three-dimensional potential flows; Induced resistance and added mass force

•  Flow over Airfoils

Low speed flow over airfoils: the vortex sheet; The Kutta condition; Kelvin’s circulation theorem and the starting vortex; Symmetric airfoils; Cambered airfoils

•  Flow over Finite Wings

The vortex filament, Biot-Savart law and Helmholtz theorems; Prandtl’s classical lifting line theory

•  Boundary Layers

Falkner-Skan similarity solution; Hiemenz flow; Boundary layer over an infinite swept wing (FS-Cooke); Preliminary concepts on transition-to-turbulence of the boundary layer.

• Computational aerodynamics

Practical experience with CFD codes.

• J.D. Anderson Jr., “Fundamentals of Aerodynamics”, McGraw-Hill 2007

-     T. von Karman, “Aerodynamics”, McGraw-Hill 1963

• R.H. Barnard & D.R. Philpott, “Aircraft Flight”, Prentice Hall 1995

•  J.S. Denker, “See how it flies”, http://www.av8n.com/how/

(italian version: http://utenti.quipo.it/volare/how.htm#contents)

## TEACHERS AND EXAM BOARD

Ricevimento: Students can just drop by the instructor's office, though an email beforehand is preferable (alessandro.bottaro@unige.it).

Exam Board

ALESSANDRO BOTTARO (President)

JAN OSCAR PRALITS

ANDREA MAZZINO

## LESSONS

Teaching methods

The course will consist mainly of lectures and applications of the concepts learned in class to the solution of practical aerodynamics problems. The second part of the course will consist mostly in practical experience in the computer room with open-source and commercial CFD codes.

ORARI

L'orario di tutti gli insegnamenti è consultabile su EasyAcademy.

Vedi anche:

AERODYNAMICS

## EXAMS

Exam description

The exam will consist of a written test plus an oral examination.

Assessment methods

In the course of the semester, the students must take two partial exams, for the instructor to monitor their level of comprehension of the topics covered. Furthermore, to ascertain their maturity, critical thinking and capacity of synthesis, the writing of a term paper is required, on a topic chosen by the student and inherent to aerodynamics. The paper is then presented by each student to the whole class.

## FURTHER INFORMATION

Pre-requisites: n introductory course in fluid mechanics.