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Transcript of CFD related Research & Development at the DEPARTMENT of FLUID MECHANICS Budapest University of...
CFD relatedResearch & Development
at the
DEPARTMENT of FLUID MECHANICS
Budapest University of Technology and EconomicsHUNGARY
Prof. Tamás LAJOS Dr. Gergely KRISTÓF
Dr. János VAD
Fluid Mechanics Community Meeting, TU WIEN, September 30th 2004
Radial pump simulation:comparison of simulated flow field and PIV data
PIV measurement
FLUENT simulation
Fluid Mechanics Community Meeting, TU WIEN, September 30th 2004
Cavitation zone
Hydraulic losses
Optimization ofside-channel fuel pump of cars
Pressure distribution
φ=0.64 φ=0
Fluid Mechanics Community Meeting, TU WIEN, September 30th 2004
Simulation of exhaust system: nonuniform load of catalitic converter
Fluid Mechanics Community Meeting, TU WIEN, September 30th 2004
Vehicle AerodynamicsPressure coefficient distribution about rotating isolated wheel
-2
-1.5
-1
-0.5
0
0.5
1
1.5
2
2.5
0 30 60 90 120 150 180 210 240 270 300 330 360
fi [°]
Cp
[-]
Experiment-Fackrell
Experiment-Skea
Experiment-MIRA
CFD-Author's
CFD-Fackrell
Flow topology and validation on isolated wheel
Flow topology in wheelhouse, interaction of flow inside wheelhouse and vehicle body
Fluid Mechanics Community Meeting, TU WIEN, September 30th 2004
Measurement and numerical simulation of pollutant dispersion in urban atmosphere
Numerical and wind tunnel model of Millennium City Center
Pollutant concentration
Mean concentration valueslogarithmic scale
0.1
1
10
100
R1 R3 R5 R7 R9 R11 R13 R15 U1 U3 U5 U7
measuring points
c*
Wind Tunnel
MISKAM 4.21
FLUENT 6
Comparison of simulation and measurement
Fluid Mechanics Community Meeting, TU WIEN, September 30th 2004
Numerical simulation and wind tunnel measurement of wind forces
X
Y
Z
Cp MEAS0.750.680.610.550.480.410.340.280.210.140.070.01
-0.06-0.13-0.20-0.26-0.33-0.40-0.47-0.53
Measured in wind-tunnel FLUENT 5.5
Budapest Arena
D ru ck beiwerte an äu sserer O berfläch e ( C pa [- ] )W in dr ich tu n g 0° 1:300
0°
Bild 6.
Ice-stadium Essen
Fluid Mechanics Community Meeting, TU WIEN, September 30th 2004
Air-conditioning & ventilation of large halls
Streamlines and temperaturein a concert hall
Flow in aula of a bank
Streamlines in Opera-house Temperature in Sport Arena
Smoke dispersionin Sport Arena
Fluid Mechanics Community Meeting, TU WIEN, September 30th 2004
Application of CFD in energetics
NOx reduction in boiler
Simulation of flowin steam turbine stage
Optimization of flow in boilers
Fluid Mechanics Community Meeting, TU WIEN, September 30th 2004
Coherent structure extraction
PIV measurements on a flow over a rectangular, open cavity
Extraction of coherent structures from turbulent flows by Proper Orthogonal Decomposition (POD)
Flow direction Flow direction
Coherent structures, which characterize temporal features (energetic vortex shedding process found by POD)
Fluid Mechanics Community Meeting, TU WIEN, September 30th 2004
LES of flow past a Danube bridge:comparison of simulation and wind tunnel results,fluctuation of lift force
Fluid Mechanics Community Meeting, TU WIEN, September 30th 2004
Description of turbulent ribbed duct flow, using results of Large Eddy SimulationApplication: internal
cooling of turbine blades
Mixing by the mean flow
Mesh, recirculation regions
High TKE regionValidation to PIV measurement
Fluid Mechanics Community Meeting, TU WIEN, September 30th 2004
Conference on
ModellingFluid Flow
Conference Proceedings
of the previous CMFF’03in Vol.I-II.
J. Vad, T. Lajos, R. Schilling (Eds.)Modelling Fluid Flow / The State of the Art-invited lectures-summaries of workshops-selected papersSPRINGER Verlag 2004 ISBN 3-540-22031-3
Fluid Mechanics Community Meeting, TU WIEN, September 30th 2004
BUDAPEST / HUNGARY
NEXT CMFFEVENT
in
2006
Organized byDepartment of Fluid Mechanics170 papers from 30 countries
September 3-6, 2003