Course code: wb1417

Course name: Fluid-Structure interaction

This concerns a course 

DUT credit points: 1

ECTS credit points: 1.5

Faculty of Mechanical Engineering and Marine Technology

Section of Engineering Mechanics

Lecturer(s): Prof. Dr. Ir Daniel Rixen

Tel.:  015 - 27 81523 / 85733

Catalog data:

structural mechanics, fluid mechanics, biomechanical flows, vibro-acoustics, coupling, finite elements, aeroelasticity, numerical methods, flutter, buffeting, wind-induced vibrations.

Course year:

MSc 1^st year

Semester:

2B /

Hours per week:

2

Other hours:

8

Assessment:

Written report

Assessment period:

2B, August

(see academic calendar)

Prerequisites (course codes):

wb1308

Follow up (course codes):

Detailed description of topics:

Fluid-Structure interaction is a topic that covers many important and complex problems in engineering where the interaction between the mechanical behaviour of a solid structure is significantly influenced by surrounding fluids (water, air, etc ) and where, in turn, the aero/hydro-dynamic forces are modified by the deformation of the structure. Although it was pioneered by aeronautics engineers to study the static and dynamic deformation of wings under aerodynamic forces (aeroelasticity), fluid-structure interaction analysis involves also the description of interaction phenomenon in constructions (e.g. wind induced vibrations), vibro-acoutics, blood flow in elastic arteries or ink flow in an actuated printer head.

In the past, many semi-analytical approaches were developed to describe fluid-structure interaction. Today, complex problems interaction problems are investigated using engineering codes that couple structural models to fluid models.

In this course, we will discuss some basic static and dynamic phenomenon induced by fluid-structure interaction such as divergence, flutter and buffeting. An introduction to vibro-acoustics analysis will be presented. In the last part, some specific issues on coupling fluid and structural models in Finite Element/Volume will be discussed (e.g. moving meshes in fluids, pressure/displacement compatibility, time-integration).

Course material:

• lecture notes

References from literature:

• Fluid-Structure interaction: applied numerical methods, H. Morand. R. Ohayon
• Structural acoustics and vibration; mechanical models, variational formulations and discretization, R. Ohayon, C. Soize, Academic Press, 1998, ISBN 0-12-524945-4 

Remarks assessment, entry requirements, etc.:

An assignment will be given in ANSYS/Matlab (topic to be defined with students).

Learning goals:

The aim of the lecture is to make the students understand what effect surrounding fluids can have on a structure. In particular, students should become aware of possible unstable phenomena. Also, getting an overview of the difficulties involved in coupling fluid and structure models is one of the objectives of the course.

Computer use:

Use of ANSYS and/or Matlab for assignment and illustration

Laboratory project(s):

Design content:

Percentage of design:     %