FACULTY

APPLIED TECHNOLOGIES

DEPARTMENT

AIRCRAFT TECHNOLOGY ENGINEERING

LEVEL OF STUDIES

UNDERGRADUATE

MODULE CODE

AE2220

SEMESTER OF STUDIES

4^TH

COURSE TITLE

FLUID MECHANICS

INDEPENDENT TEACHING ACTIVITIES

TEACHING HOURS PER WEEK

CREDIT UNITS

Lectures and Practice

5

7

Lab activities

1

2

COURSE TYPE

Specialty course

PRE-REQUIRED COURSES

TEACHING AND EXAMINATION LANGUAGE

GREEK

THE COURSE IS OFFERED TO ERASMUS STUDETNS 

COURSE WEBSITE (URL)

Learning Objectives

This course refers to the flow of fluids inside and outside the aircraft and knowledge on this area is an advantage of great importance for aircrafft technology engineers. It comprises the basis for the development of other fundamental specialty courses such as Aerodynamics, Flight Mechanics and Computational Fluid Dynamics.

After successfully completing the course, students should be able to:

·      Analyze the basic concepts of flow field in and around solid objects

·      understand the basic and crucial flow magnitudes  

·      Identify all the flow magnitudes concerning the aircraft flight and operation 

·      Apply the laws of fluid statics and fluid dynamics for the solution of problems related to aircraft flight

·      Have knowledge of the basic measurement instruments used in fluid mechanics

·      Understand the aircraft pneumatic and hydraulic systems

·      Describe and explain how fluid mechanics magnitudes affect the aircraft operation and control

·      Collaborate with their fellow students to compose and present a study concerning the flow field inside and around the aircraft

General Skills

•    Search, analysis and combination of data and information with the use of the necessary technologies

•    Autonomous work

•    Group work

•  Generation of new research ideas

THEORY

Unit 1: Introduction to Fluid Mechanics

History- Course objectives- Fluid Mechanics areas of application

Unit 2: Fluid characteristics and properties

Definition of fluids- Fluid properties- Gas equations of state- Enthalpy- Entropy- Fluid compressibility

Unit 3: Hydrostatics

The principle of Hydrostatics – Archimedes Principle -  Surface forces

Unit 4: Aerostatics

The principle of Aerostatics – Atmospheric standards 

Unit 5: Description of flow fields

Flow field – Lagrange diagram – Euler diagram  - Flow line – Flow surface  – Coordinate Reference systems

Unit 6: Fundamental flow equations I

Continuity equation – Bernoulli equation

Unit 7: Fundamental flow equations II 

Energy equation

Unit 8: Fundamental flow equations III

             Euler equation – Τhe momentum theorem

 Unit 9: Uncompressed flow

Definition and properties of boundary layer -  Laminar and Turbulent flow

Unit 10: Ideal and actual flow

 Navier Stokes equations – Non dimensional numbers

Unit 11: Boundary layer

Flat plate boundary layer – Theoretical investigation of boundary layer – Turbulent boundary layers – Temperature boundary layer – Boundary layer separation – Aerodynamic forces in objects

Unit 12: Similarity

State analysis and mechanical similarity

LABORATORY

1^st Lab activity: Experimental data processing – Measurements reliability

2^nd Lab activity: Experimental definition of  fluids density and atomic weight I

3^rd  Lab activity: Experimental definition of  fluids density and atomic weight II

4^th  Lab activity: Experimental definition of fluids viscosity

5^th Lab activity:  Manometer function – Fluid Speed methods of measurement

6^th  Lab activity: Fluids flow visualization – Wind tunnels  

7^th Lab activity :  Simulation of fluid laminar flow in a duct

8^th  Lab activity:  Simulation of fluid turbulent flow in a duct

9^th Lab activity: Simulation of complex fluid flow and assessment of Reynolds number effect

^10th Lab activity :  Simulation of fluid flow in a duct and assessment of duct roughness effect

^11th Lab activity :  Simulation of fluid flow in a convergent – divergent duct

12^th  Lab activity:  Simulation of air flow around an airfoil NACA

ΤEACHING METHOD

In the classroom

USE OF INFORMATION AND COMMUNICATION TECHNOLOGIES  

•  Special computer software

•  Use of internet

•  Learning support through the e-class platform

•  Use of computer data projector

TEACHING ORGANIZATION

STUDENT EVALUATION

Evaluation on theory material

Ι. Final writen examination (100%) including:

- Short answer questions

- Problem solving questions concerning fluid flow

Evaluation on Laboratory work

Ι. Weekly writen examination   (40%)

ΙΙ. Final writen examination  (30%) including:

–                     Short answer questions

–                     Problem solving questions concerning executed lab activities

ΙΙΙ. Simulation activities (30%)

-Suggested Bibliography :

·           V. Streeter, E. B. Wylie, Μηχανική Ρευστών,  Εκδ. Φούντας, 2008

·           R. Daugherty, J. Franzini, E. Finnemore, Μηχανική Ρευστών με τεχνικές εφαρμογές, Εκδ. Φούντας, 2008

·           Ν. Αθανασιάδης Ν., Μηχανική ρευστών, Εκδ. Συμεών, 1989

·           Σ. Τσαγγάρης, Μηχανική των Ρευστών, Εκδ. Συμεών, 2005

·           Α. Παπαϊωάννου, Μηχανική των Ρευστών, τόμοι Ι και ΙΙ, Εκδ. Κοράλι, 2002

·           E. Schaughnessy, I. Katz, J. Schaffer, Introduction to Fluid Mechanics, Oxford University Press, 2005

·           J. Evett, C. Liu, 2500 solved problems in Fluid Mechanics and Hydraulics, SchaumSeries, Mc Graw Hill, 1985

·           Υ. Nakayama, Introduction to Fluid Mechanics, Butterworth-Heinemann, 1999

·           J. Bloomer, Practical Fluid Mechanics for Engineering Applications, Marcel Dekker,2000