presented at the comsol conference 2009 milan mltih i ...troma i induction i total-2 ele-1.5 s ults...

COMSOL CONFERENCE 2009October 14th 2009 Milan, Italy

Institute of Print Technology

Bern University of Applied Sciences

M lti h i M d lliMultiphysics Modelling of a Micro Valve

Bern University of Applied SciencesInstitute of Print Technology, Prof. Fritz Bircher

1Philip Marmet

Presented at the COMSOL Conference 2009 Milan




Content

• Introduction

• Modelling

• Results

• Conclusion

Results

2




Applications

B ill i tiBraille printing

Dispensing inon Dispensing in chemistry

oduc

tio

3

Intr

o




Objectives

• Understanding the processes

A l t th d l t• Accelerate the development process

• Building up competence in multiphysics modelling

on

modelling

oduc

tio

4

Intr

o




Schematic buildup

onod

uctio

5

Intr

o




delli

ng

6

Mod




delli

ng

7

Mod




delli

ng

8

Mod




Nonlinear Magnetic Material0.8

1

1.2

1.4T Magnetic Material

B=f(H)0 1000 2000 3000 4000 5000 6000 7000 8000 9000 10000

0

0.2

0.4

0.6

H / A/m

B /

T

H / A/m

Induction

delli

ng

Induction Currents

9

Mod




delli

ng

10

Mod




V l itIntroduction0.8 m/s

Plunger movement

Velocity

Wofür braucht man das, Beispiele nennen

• Velocity: Moving Wall

Displacement:

Plunger

nennen0 m/s

• Displacement:Moving Mesh(ALE)

• Two-Phase Flow

• Surface Tension Force

• Droplet Break up

delli

ng

11

Mod




delli

ng

12

Mod




delli

ng

13

Mod




delli

ng

14

Mod




delli

ng

15

Mod




ElectromagneticsElectromagnetics

Magnetic Flux D it [T]

Induced Current D it [A/ 2]Density [T] Density [A/m2]

Ai G

sults Moving Plunger

Coil

Air Gap

16

Res Plunger




Electromagnetic Subsystem

2

2.5

s

Electromagnetic Subsystem

1

1.5Va

riabl

es

0

0.5

gnet

ic V

IExtern

-1

-0.5

ctro

mag IInduction

ITotal

-2

-1.5

Ele

c

sults

BGap

FMagnetic

17

0 0.5 1 1.5

x 10-4

-2.5

t / s

Res




Electromagnetic SubsystemElectromagnetic Subsystem

2

2.5

s

1

1.5

aria

bles

0

0.5

gnet

ic V

IExtern

-1

-0.5

ctro

mag IInduction

ITotal

sults -2

-1.5

Ele

c BGap

FMagnetic

18

Res 0 0.5 1 1.5

x 10-4

-2.5

t / s




5 Plunger PositionMechanic

1

2

3

4x 10

-5

z / m

Plunger PositionMechanicSubsystem

0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5

x 10-4

-1

0

t / s

Plunger Velocity

0

0.2

0.4

0.6

v / m

/s

Plunger Velocity

0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5

x 10-4

-0.4

-0.2

t / s

v

Forces on the Plunger

FMagnetic

FViscous Stress

0 5

1

1.5

2

F / N

Forces on the Plunger

sults

FPressure

FSpring

190 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5

x 10-4

-0.5

0

0.5

t / s

F

Res FPlunger




Fluid in the nozzle

sults

20

Res




Highspeed recordingrecording

sults

21

Res




Conclusion

• Thorough understanding of the physics involved

• Competence in multiphysics modelling

Interdependency of the subsystems is- Interdependency of the subsystems is fundamental

n

• Development process

- Flexible implementation of the entire

nclu

sio

22

system in Comsol Multiphysics

Con




Thank you!

Phili M tPhilip Marmet

www.printtechnology.ch

23

Bern University of Applied SciencesInstitute of Print Technology, Prof. Fritz Bircher

presented at the comsol conference 2009 milan mltih i ...troma i induction i total-2 ele-1.5 s ults...

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