Solid and Fluid Mechanics13 maart 2014

René Pecnik & René Delfos

Coordinator Solids & Fluids

r.delfos@tudelft.nl

+ Short Introduction+ Engineering Mechanics (ED & SOCM)

(Hans Goosen)

+ Fluid Mechanics (FM)(Wim-Paul Breugem)

+ Some more stories+ Questions?

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- Some examples:

- Fingering ‘Saffman-Taylor instability’- Rattleback

- Euler’s disc- A gas turbine

Why study ‘Solid and Fluid Mechanics’?

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- How much? (in my design)(deformation, strength, resonance frequencies)

-> ME-PME (Precision and Microsystems Engineering)

- How much? (in my design)(chemical conversion, power production)

-> ME-SPET (Sustainable Process & Energy Technology)

- Why and how? (we still could use it in a design)

(‘what is the underlying physics’)

-> ME-SFM (Solid and Fluid Mechanics

SFM is about the fundamentals of Mech. Eng.

Interdepartmental between P&E and PME

Why study ‘Solid and Fluid Mechanics’?

• We want to understand rather than just useturbulent friction (flow structures)

Example pipe friction: Moody-chart? (1)

Example pipe friction: Moody-chart? (2)• Movie of Direct Numerical Simulation of ‘realistic’ turbulence

on a 16000-core parallel computer

Example pipe friction: Moody-chart? (2)• We want to modify (reduce) friction: (wall; additives)

Flow structure from a simulation + modelling

Experimental data& scaling laws

Example pipe friction: Moody-chart? (3)• Movie of fibres in pipe flow at two different concentrations

α = 20; Re = 5000 α = 60; Re = 7500

MSc Program layout

Courses (1st year)• Obligatory SFM: ~ 29 ECTS

• Obligatory specialisation: ~ 12 ECTS

• Elective: ~ 20 ECTS

• Total 60+ ECTS

• 1st semester: the fundamentals

• 2nd semester: how we use them

Projects (2nd year)• Internship 15 ECTS

• MSc project 45 ECTS

of which 10 ECTS literature study

with oral presentation.

• Possibility to combine internship and MSc project.

• For instance:

Internship in Industry

-> MSc project at University

or vice versa

Modulekaart = vakkenverdeling

SpecialisationsFLUID MECHANICS Wim-Paul Breugempart of P&E (Process & Energy Technology) dept.

• Fluid MechanicsWesterweel, Boersma, (Ooms, Eckhardt), Delfos

ENGINEERING MECHANICS Hans Goosen

part of PME (Precision and Microsystems Engineering) dept.• Engineering Dynamics

Schwab (Tiso, de Klerk) (+vacancy)

• Structural Optimization and Mechanics

van Keulen, (Langelaar), Goosen

Modules Engineering Dynamics

Modules Fluid Mechanics

Structural Optimization and Mechanics

Multi-phase flow: flotation• Can we improve steel quality

(i.e., remove solids from liquid steel)

using rising gas bubbles?

->Q: Wake or surface ‘capture’?

1 Casting strand

2 Tundish simulation

3 Tundish water model

4 Bubble plume

5 Slag layer

Measuring the flow field & the concentration

Measuring particle adhesion: fine (left); coarse (right

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Can be done abroad (especially for Dutch students):Recent in Stanford, ETH (Zürich), Osaka, NTNU, DLR

(Göttingen), Numeca (Brussels), Labode Ondas e Correntes(Rio de Janeiro)…

…or in the Netherlands (especially for International students);Recent in TUDelft(!), Teijin, KNMI, Shell, Heerema…

Internship (stage) 15 EC (niet voor ex-HBO!)

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Teijin (production of Aramid-fibers)

Internship (2)

- spin nozzle (Fluid mechanics)- stick-slip during strain hardening

(Computational Mechanics)- filament vibration and stability

(Experimental Dynamics)

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Can be done in a company, usually in ‘your laboratory’.

Master-thesis project 45 EC

Prediction of turbulent transition through ‘trip wires’ using flow simulation.

Prediction of CT-scanner floor stability

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Our approach: water tunnel study & simulation• Tunnel model = ‘Ahmed body’ with/without spoilers

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Water tunnel study & simulation (2)• Spoilers reduce drag but create strong longitudinal vortices

Simulation <=> Measurements

The next step in your career:

• Industry (R&D):

• Philips, ASML, Shell, Tata-steel, Akzo-Nobel, DSM, …

• Canon-OCE, Bronkhorst, NXP, BMW …

• GTI’s: TNO, MARIN, NLR, …

• Process technology, chemical industry, metal industry, energy technology, aeronautics, dredging industry, automotive industry, wind energy, climate control, food & health, meteorology, …

• University (obtaining a Ph.D.): some 50% of SFM-students!

• ‘Education in research’. Later on, R&D or University

Fluid Mechanics Section• 3 full-time prof: J. Westerweel, BJ. Boersma

D. Roekaerts

• 3 part-time prof: G. Ooms, B. Eckhardt

R. Henkes

• 8 U(H)D: R. Pecnik, R. Delfos, M. Pourquié, D. Tam,C. Poelma, WP. Breugem, Gerrit Elsinga, M. Tummers

• 1 post-doc, ~15 Ph.D. students.

• Yearly 12-14 M.Sc. students (in SFM, SPET, AP)

www.pe.tudelft.nl/FM

FLUID MECHANICS

Engineering Mechanics

SOLID MECHANICS

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Engineering Mechanics Groups• Engineering Dynamics

(Schwab, Tiso, de Klerk)

• Structural Optimization & Mechanics(van Keulen, Goosen, Langelaar…)

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Research FocusEngineering Dynamics

Focus:

• Multifield

• Multibody

• Dynamics & Statics

Aspects:

• Fundamentals

• Numerical Methods

• Experimental Techniques

Application Fields:

• Microsystems

• Mechatronics

But also:

• Aerospace

• Biomechanics

• Sports

• Automotive

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ExamplesEngineering Dynamics

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Research FocusStructural Optimization & Computational

Mechanics

Focus:

• Multifield• Multilevel• Statics & Dynamics

Aspects:

• Fundamentals• Numerical Methods• Optimization and Design• Experimental Validation

Application Fields:

• Micro-devices and Micro-systems

But also:

• Aerospace• Biomechanics• Maritime

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ExamplesStructural Optimization & Computational

Mechanics

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ExamplesStructural Optimization & Computational

Mechanics

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Examples of Collaboration

• Infineon

• NXP

• Philips (research)

• ASML

• Dutch Space

• ESA

• AOES

• Bronkhorst High Tech

• Aquamarijn

• OCE

• Univ. of Leeds

• Imtek

• Airbus

• Bosch

• BMW

• Univ. of Stuttgart

• Univ. of Florida

• Technion

• Chalmers

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SOLID MECHANICS- You may join the presentation March 27 of

Precision and Microsystems Engineering (PME)(or contact ir. Jan Neve, PME-coordinator)

FLUID MECHANICS- You probably already joined the presentation last Tuesday of

Sustainable Processes and Energy Technology (SPET)(or contact dr.ir. Joop ter Horst / dr.ir. Mark TummersSPET-coordinators)

Or just pass by René Pecnik (or me) with questions...www.delftpe.nl/Education choose ‘SFM’ (or ‘SPET’...)

(slightly) different interests?

Honours Programme Master (HPM)• A tailor-made rigorous programme of 30 EC for motivated students seeking a

unique challenge in their course work.

• Build your own programme based on an inter- or mono-disciplinary

approach.

• Become part of an active honours community and benefit from social and

networking events.

How does it work?

• Information session

• Selection process

• Match-up with coach

• Planning the programme

• Start 2nd semester of master

• Certificate upon successful completion

More info? www.honours.tudelft.nl

or via our HPM coordinator, prof. Thijs Vlugt

Questions?SFM & FM: René Pecnik Room K-1-220

phone 89153 r.pecnik@tudelft.nlEM: Hans Goosen Room G-1-400

phone 86500 j.f.l.goosen@tudelft.nl

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