10931 Van Schijndel Presentation
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Transcript of 10931 Van Schijndel Presentation
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Computational Building Physics
using COMSOL
Research, Education & Practice
dr.ir. Jos van Schijndel
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PAGE 110-11-2011
User since 1998(?)
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PAGE 210-11-2011
Contents
• 1.Introduction• Complexity and scale levels
• My computational laboratory
• 2.Combined heat, moisture, air, stress models for(building) constructions
• 3.From Material [~mm] to EU [~Mm] scale level
• 4.Conclusions
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PAGE 310-11-2011
• What is a ‘Complex system’?
• Where are Complex systems in the builtenvironment?
1. IntroductionComplexity and Scale levels
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PAGE 410-11-2011
• The whole is greater than the sum of the individual parts
IntroductionComplexity and Scale levels
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PAGE 510-11-2011
• Butterfly effect: Small parameter variations may producelarge variations in the long term behavior of the system.
IntroductionComplexity and Scale levels
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• Where are the dynamic complex systems at thebuilt environment ?
Everywhere and on several scales
IntroductionComplexity and Scale levels
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Material ~ mm Present dynamic complex systems:
Material Physics
•Durability
IntroductionComplexity and Scale levels
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Building ~ 10 m Present dynamic complex systems:
Building Physics
•Indoor climate•Building systems
IntroductionComplexity and Scale levels
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Urban Area ~ km Present dynamic complex systems:
Urban Physics
•Urban Climate•Urban district systems
IntroductionComplexity and Scale levels
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PAGE 1010-11-2011
EU ~ 1 Mm Present dynamic complex systems:
Global climate Physics
• (Future) Climate• Mapping
IntroductionComplexity and Scale levels
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PAGE 1110-11-2011
Multi Buildings‘HAMBase’
MatLab
Multi DetailsPDE
Comsol
Multi Systems & ControlODE
SimuLink
IntroductionMy computational laboratory
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PAGE 1210-11-2011
Tools Buildings modeling physics: HAMBasescientific software: MatLab
Anne Frank House
Simulation and validation
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PAGE 1310-11-2011
Tools Detail modeling physics: PDEsscientific software: Comsol
3D Moisture
Hunting Logde St. Hubertus
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PAGE 1410-11-2011
Tools Systems&Control modeling physics: ODEsscientific software: SimuLink
Dutch Maritime Museum
Building systems failure modeling
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PAGE 1510-11-2011
http://archbps1.campus.tue.nl/bpswiki/index.php/Hamlab
IntroductionMy computational laboratory
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PAGE 1610-11-2011
Computational Building PhysicsResearch Matrix
Topic
Scale
Heat Moisture Air Stress
~ mm
~ m
~ km
~ Mm
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PAGE 1710-11-2011
Computational Building PhysicsHeat
Topic
Scale
Heat Moisture Air Stress
~ mm
~ m
~ km
~ Mm
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PAGE 1810-11-2011
Application 1: Heat 3D
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PAGE 1910-11-2011
Computational Building PhysicsHeat+Moisture
Topic
Scale
Heat Moisture Air Stress
~ mm
~ m
~ km
~ Mm
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PAGE 2010-11-2011
Application 2: Heat and moisture transportPDEs
)(
)(
2221
1211
LPcK T K t
LPcC
LPcK T K t
T C
LPc
T
,
,
,
)log(
21
22
12
11
10
T
PsatK
RT
M Psat
LPc
Pc
LPc
PcK K
LPc
Pc
Pc
w
C
RT
M Psat
LPc
PclK
K
cC
PcLPc
p
a
w p
LPc
a
w plv
T
• Potential T, LPc
• PDE coefficients formulation
• Material properties
• function of T, LPc
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PAGE 2110-11-2011
Calculating PDE coefficientsusing material properties, method 1/2
)(
)(
2221
1211
LPcK T K t
LPcC
LPcK T K t
T C
LPc
T
• PDE coefficients lookup
tables calculated in MatLab
using:
• heat conduction
coefficients
• specific heat
• density
• liquid permeability
• moisture retention curve
• vapour permeability
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PAGE 2210-11-2011
)(
)(
2221
1211
LPcK T K t
LPcC
LPcK T K t
T C
LPc
T
Calculating PDE coefficients
using material properties, result 2/2
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PAGE 2310-11-2011
VerificationHAMSTAD Benchmark no 1
)(
)()(
p p g
p plT T hq
i
ilvii
0
)(
g
T T hq ee
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PAGE 2410-11-2011
VerificationHeat & Moisture
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PAGE 2510-11-2011
VerificationMoisture
LPc based model RH based model
Thanks to: Natalie Williams Portal (visit today, 4:00-5:30, Silchersaal)
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PAGE 2610-11-2011
Computational Building PhysicsHeat+Moisture+Air
Topic
Scale
Heat Moisture Air Stress
~ mm
~ m
~ km
~ Mm
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PAGE 2710-11-2011
Application 3 HAM modelingInfluence of micro air movement
Inside
Outside
a b
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PAGE 2810-11-2011
HAM modelingPhysics
0)(:
;0)(:
0)(:
vvv
p p
p p Dt
poisture
P K P K t
P Air
T C T t
T C Heat
u
u
u
0)(:);()(::
0:;::
0)(:);()(::
inf
0
inf
vvvv pDInsulation p p pDFlux
PK InsulationPPPressure
T InsulationT T hT Flux
nnMoisture
nAir
nnHeat
PDEs
Boundary values
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PAGE 2910-11-2011
HAM modelingSimulation of Relative Humidity
Air velocity
= 0
Air velocity
+10 μm /s
Air velocity
-10 μm /s
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PAGE 3010-11-2011
HAM modelingInfluence of micro air movement
a b
Summary
A (so far immeasurable) low air movement of order 10-5
m/s seems to have significant impact on the RH
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PAGE 3110-11-2011
Computational Building PhysicsHeat+Moisture+Air+Stress
Topic
Scale
Heat Moisture Air Stress
~ mm
~ m
~ km
~ Mm
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PAGE 3210-11-2011Thanks to: Zara Huijbregts (visit today, 4:00-5:30, Silchersaal)
Application 4 HAMS modelingIncluding stress and strain
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PAGE 3310-11-2011Thanks to: Zara Huijbregts (visit today, 4:00-5:30, Silchersaal)
Application 4 HAMS modelingIncluding stress and strain
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PAGE 3410-11-2011
Application 4 HAMS modelingIncluding stress and strain
Thanks to: Zara Huijbregts (visit today, 4:00-5:30, Silchersaal)
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PAGE 3510-11-2011Thanks to: Zara Huijbregts (visit today, 4:00-5:30, Silchersaal)
Application 4 HAMS modelingIncluding stress and strain
C i l B ildi Ph i
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PAGE 3610-11-2011
Computational Building PhysicsHeat, including Building Scale
Topic
Scale
Heat Moisture Air Stress
~ mm
~ m
~ km
~ Mm
A li i 5
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PAGE 3710-11-2011
Application 5
Heat, including Building Scale
C t ti l B ildi Ph i
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PAGE 3810-11-2011
Computational Building PhysicsHeat, including Urban Scale
Topic
Scale
Heat Moisture Air Stress
~ mm
~ m
~ km
~ Mm
A li ti 6
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PAGE 3910-11-2011
Application 6
Wind & driving rain at Urban Scale
A li ti 7
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PAGE 4010-11-2011
• ..
Thanks to: David van Reenen
Application 7
Ground energy at Urban Scale
A li ti 7
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PAGE 4110-11-2011Thanks to: David van Reenen
Application 7
Ground energy at Urban Scale
A li ti 7
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PAGE 4210-11-2011Thanks to: David van Reenen
Application 7
Ground energy at Urban Scale
C t ti l B ildi Ph i
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PAGE 4310-11-2011
Computational Building PhysicsHeat, including EU Scale
Topic
Scale
Heat Moisture Air Stress
~ mm
~ m
~ km
~ Mm
A li ti 8
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PAGE 4410-11-2011
• Weather Stations
• Used as boundary
values for the external
climate
Application 8
Incorporate EU Scale
Application 8
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PAGE 4510-11-2011
• Subject buildingconstructions to
external climates
• Map performances
Application 8
Incorporate EU Scale
Conclusion
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PAGE 4610-11-2011
Conclusion
• COMSOL is a state-of-art Multiphysics modeling tool for doingresearch in the area of building physics
• High performance on
• 1,2 & 3D capabilities
• Grid & solvers techniques
• Visualization• Flexibility due to PDE abstraction level
• Also an excellent tool for education
• Our models are available at http://sts.bwk.tue.nl/hamlab/
http://sts.bwk.tue.nl/hamlab/http://sts.bwk.tue.nl/hamlab/
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• Thank you
• Questions?
http://sites.google.com/site/josvanschijndelresearch/home/CV2A4v3_ENG.pdf?attredirects=0