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EUFAR Experts Workshop, Capua (Italy), 16–20 September 2002
3D Airflow Simulation in a Counterflow Virtual Impactor (CVI)
Vincent Vocourt,Laboratoire de Météorologie Physique (LaMP)
Université de Clermont-Ferrand, FranceThesis : Etalonnage et simulation numérique d’une sonde à impaction virtuelle (CVI)
dans le cadre de l’étude des propriétés physico-chimiques des gouttes nuageuses
Presented by Philippe Nacass, Météo France, CAM, Brétigny, France
EUFAR Experts Workshop, Capua (Italy), 16–20 September 2002
Mesh refinementsaround CVI tip and through porous tube
Gambit (stuctured and unstrucutured meshes)
EUFAR Experts Workshop, Capua (Italy), 16–20 September 2002
Mesh refinementsaround CVI tip and through porous tube
Gambit (stuctured and unstrucutured meshes)
EUFAR Experts Workshop, Capua (Italy), 16–20 September 2002
Mesh refinementsaround CVI tip and through porous tube
Gambit (stuctured and unstrucutured meshes)
EUFAR Experts Workshop, Capua (Italy), 16–20 September 2002
Simulated flow conditions
F 3 (=F 1- F 2)
F 1
F 2"st agnat ion plane"
Vin = 150 m.s-1 (at -20 mm) T = 273 K Turbulence intensity 8%
EUFAR Experts Workshop, Capua (Italy), 16–20 September 2002
Simulated flow conditions
F 3 (=F 1- F 2)
F 1
F 2"st agnat ion plane"
F2 : 98 % F3 : 2 %
EUFAR Experts Workshop, Capua (Italy), 16–20 September 2002
Simulated flow conditions
F 3 (=F 1- F 2)
F 1
F 2"st agnat ion plane"
F1 : V = 6 m.s-1 T = 300 K Turbulence intensity 6%
EUFAR Experts Workshop, Capua (Italy), 16–20 September 2002
Simulated flow conditions
F 3 (=F 1- F 2)
F 1
F 2"st agnat ion plane"
Porous size : 40 m Permeability : 2.378 10-11 m2
EUFAR Experts Workshop, Capua (Italy), 16–20 September 2002
Velocity field of air stream linesWind tunnel : Vin = 40 m.s-1 Vout = 150 m.s-1
EUFAR Experts Workshop, Capua (Italy), 16–20 September 2002
Velocity field of air stream lines
EUFAR Experts Workshop, Capua (Italy), 16–20 September 2002
Velocity field of air stream lines
EUFAR Experts Workshop, Capua (Italy), 16–20 September 2002
Particle trajectories
EUFAR Experts Workshop, Capua (Italy), 16–20 September 2002
Particle trajectoriesDiameter >> 10m
EUFAR Experts Workshop, Capua (Italy), 16–20 September 2002
Particle trajectoriesDiameter << 5m
EUFAR Experts Workshop, Capua (Italy), 16–20 September 2002
Particle trajectories around CVI tip
EUFAR Experts Workshop, Capua (Italy), 16–20 September 2002
Velocity field of air stream linesVin = 150 m.s-1 V
CF = 1 L.mn-1
EUFAR Experts Workshop, Capua (Italy), 16–20 September 2002
Velocity field of air stream lines
EUFAR Experts Workshop, Capua (Italy), 16–20 September 2002
Particle trajectories in the probeDiameter << DCut(50%)
EUFAR Experts Workshop, Capua (Italy), 16–20 September 2002
Particle trajectories in the probeDiameter >> DCut(50%)
EUFAR Experts Workshop, Capua (Italy), 16–20 September 2002
Particle trajectories in the probeDiameter DCut(50%)
EUFAR Experts Workshop, Capua (Italy), 16–20 September 2002
Modeling has to continue !Modeling has to continue !