73198 - EXPERIMENTAL METHODS IN AERODYNAMICS

Conoscenze e abilità da conseguire

Aim of the course is to give the student the fundamental knowledge to plan and execute an experimental campaign in Aero and Fluid-dynamics, as well as the knowledge of the most important instruments and experimental techniques in Aerodynamics. Specifically, at the end of the course the student will be able to: - Determine the relevant variables and non-dimensional parameters for a given fluid-dynamic system; - Choose and/or design the most appropriate experimental setup and measurement instrument - Critically evaluate and analyze the experimental data together with the associated uncertainty"

Contenuti

Section 1: Course Introduction 

- Course presentation

- Role of experiments in aerodynamics;

- How to plan an experiment;

- Non-dimensional analysis and the PI-theorem;

Section 2: Measurement tools and instruments in aerodynamics - Theoretical background 

- The measurement chain

- Sampling frequency and sampling time

- Wind tunnels

- Pressure measurements

- Hot wire anemometry

- Laser doppler anemometry

- Particle image velocimetry

Section 3: Laboratory practice (hands-on laboratory practice at CICLoPE laboratory - Predappio)

- Lab 1: Measurement chain, sampling frequency, sampling time, uncertainty estimation;

- Lab 2: Hot-wire anemometry: probe calibration and experimental campaign 

Section 4: Data analysis and reporting 

- Data analysis and uncertainty evaluation

- How to write a report

Testi/Bibliografia

1. Teacher's slides and notes avaliable on e-learning platform

Coursebook: Experimental Aerodynamics by Stefano Discetti and Andrea Ianiro, CRC Press, 2017
ISBN 1498704042, 9781498704045

Suggested literature:

-The Pi-Theorem – applications to Fluid Mechanics,
L.P. Yann; (2012)

-Low-Speed Wind Tunnel Testing, Jewel B. Barlow

- Measurements in Fluid Mechanics, Stavros Tavoularis

- Springer Handbook of Experimental Fluid Mechanics, Cameron Tropea, Alexander Yarin, John Foss

Fundamental aspects of fluid mechanics and Aerodynamics will be treated as prior knowledge. Those in need of reviewing them are recommended to review specific material such as:

- Elements of Fluid Dynamics by G. Buresti

Metodi didattici

This course will be held with innovative teaching methdos:

The initial part of the course will be conventional lectures held by the teacher where general and theoretical aspects of Experimental Aeordynamics are indroduced and discussed by the teacher in frontal lectures;

The second part of the course will involve "hands-on" laboratory experience at the international research center CICLoPE. Laboratory exercises are sepcifically designed for the students to learn the best practices in experimental aerodynamics and to apply and verify the theoretical background learnt in the lectures.

The final part of the course the students will present the results of the laboratory experience and learn how to write a scientific report.

The course will be complemented with seminars held by international lecurers on advanced experimental and numerical techniques;

Digital material such as recorded lectures and digital lecture notes, as well as other multimedia material will be available on Virtuale platform.

As concerns the teaching methods of this course unit, all students must attend Module 1, 2 online [https://www.unibo.it/en/services-and-opportunities/health-and-assistance/health-and-safety/online-course-on-health-and-safety-in-study-and-internship-areas], while Module 3 on health and safety is to be attended in class. Information about Module 3 attendance schedule is available on the website of your degree programme.

Modalità di verifica e valutazione dell'apprendimento

The examination is in the form of an oral test held in the following modality: the student  will be asked 2 or 3 questions on the different subjects covered in class (including seminars). For each question, the student will be given some time to wirte down the main points to be discussed with the teacher.

The student is expected to clearly explain all the relevant aspect of the experimental or analysis techniques, including physical principles behind the measurement technique, making clear connections between the mathematical aspects discussed in class and the technical issues connected to the application. Fundamental of Aerodynamics, fluid-dynamics will be treaded as necessary prior knowledge.

Criteria with which the grade will be formed are:

- Demonstrated knowledge of the course content

- Clarity of explanation

- Capability of making connections between theoretical and practical apects 

- Demonstated knowledge of independently planning an experiment in aerodynamics

- Evaluation of experimental report

Strumenti a supporto della didattica

PPT slides and lecture notes will be periodically uploaded on Virtuale's platform.

A special section of the platform will be dedicated for sharing additional multi-media material (such as videos, research articles and link to specific websites) that will be uploaded by the teacher or by the students as suggested material. 

In addition to the standard lectures, special lectures by invited speakers on advanced measurment techniques will possibly be organized. 

Orario di ricevimento

Consulta il sito web di Gabriele Bellani