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
COMSOL CONFERENCE 2009October 14th 2009 Milan, Italy
Institute of Print Technology
Bern University of Applied Sciences
Content
• Introduction
• Modelling
• Results
• Conclusion
Results
2
COMSOL CONFERENCE 2009October 14th 2009 Milan, Italy
Institute of Print Technology
Bern University of Applied Sciences
Applications
B ill i tiBraille printing
Dispensing inon Dispensing in chemistry
oduc
tio
3
Intr
o
COMSOL CONFERENCE 2009October 14th 2009 Milan, Italy
Institute of Print Technology
Bern University of Applied Sciences
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
COMSOL CONFERENCE 2009October 14th 2009 Milan, Italy
Institute of Print Technology
Bern University of Applied Sciences
Schematic buildup
onod
uctio
5
Intr
o
COMSOL CONFERENCE 2009October 14th 2009 Milan, Italy
Institute of Print Technology
Bern University of Applied Sciences
delli
ng
6
Mod
COMSOL CONFERENCE 2009October 14th 2009 Milan, Italy
Institute of Print Technology
Bern University of Applied Sciences
delli
ng
7
Mod
COMSOL CONFERENCE 2009October 14th 2009 Milan, Italy
Institute of Print Technology
Bern University of Applied Sciences
delli
ng
8
Mod
COMSOL CONFERENCE 2009October 14th 2009 Milan, Italy
Institute of Print Technology
Bern University of Applied Sciences
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
COMSOL CONFERENCE 2009October 14th 2009 Milan, Italy
Institute of Print Technology
Bern University of Applied Sciences
delli
ng
10
Mod
COMSOL CONFERENCE 2009October 14th 2009 Milan, Italy
Institute of Print Technology
Bern University of Applied Sciences
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
COMSOL CONFERENCE 2009October 14th 2009 Milan, Italy
Institute of Print Technology
Bern University of Applied Sciences
delli
ng
12
Mod
COMSOL CONFERENCE 2009October 14th 2009 Milan, Italy
Institute of Print Technology
Bern University of Applied Sciences
delli
ng
13
Mod
COMSOL CONFERENCE 2009October 14th 2009 Milan, Italy
Institute of Print Technology
Bern University of Applied Sciences
delli
ng
14
Mod
COMSOL CONFERENCE 2009October 14th 2009 Milan, Italy
Institute of Print Technology
Bern University of Applied Sciences
delli
ng
15
Mod
COMSOL CONFERENCE 2009October 14th 2009 Milan, Italy
Institute of Print Technology
Bern University of Applied Sciences
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
COMSOL CONFERENCE 2009October 14th 2009 Milan, Italy
Institute of Print Technology
Bern University of Applied Sciences
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
COMSOL CONFERENCE 2009October 14th 2009 Milan, Italy
Institute of Print Technology
Bern University of Applied Sciences
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
COMSOL CONFERENCE 2009October 14th 2009 Milan, Italy
Institute of Print Technology
Bern University of Applied Sciences
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
COMSOL CONFERENCE 2009October 14th 2009 Milan, Italy
Institute of Print Technology
Bern University of Applied Sciences
Fluid in the nozzle
sults
20
Res
COMSOL CONFERENCE 2009October 14th 2009 Milan, Italy
Institute of Print Technology
Bern University of Applied Sciences
Highspeed recordingrecording
sults
21
Res
COMSOL CONFERENCE 2009October 14th 2009 Milan, Italy
Institute of Print Technology
Bern University of Applied Sciences
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
COMSOL CONFERENCE 2009October 14th 2009 Milan, Italy
Institute of Print Technology
Bern University of Applied Sciences
Thank you!
Phili M tPhilip Marmet
www.printtechnology.ch
23
Bern University of Applied SciencesInstitute of Print Technology, Prof. Fritz Bircher