L. Makke - ARIA Technologies

1. X. Weil - M. Nibart - L. Makke*
31/01/2019
1
ARIA Technologies SA
8-10, rue de la Ferme – 92100
Boulogne Billancourt – France
Telephone: +33 (0)1 46 08 68 60 –
Fax: +33 (0)1 41 41 93 17
E-mail: info@aria.fr – http:/
/www.aria.fr
Review of the recent CFD Applications with
Code_Saturne

2. Presentation Outline
❑ Presentation of Code_Saturne
❑ Fire smoke dispersion (EGIS)
❑ Wet plume dispersion (CEAMAG)
❑ Dust dispersion in very complex terrain
Review of the recent CFD Applications with Code_Saturne
❑ Wind exposure in CDG Airport (ARTELIA)
❑ Rocket launch dispersion (CNES)
❑ Depolluting concrete for building
construction (VINCI)

3. 1- Presentation of Code_Saturne:
❑ Code_Saturne is the free, open-source software developed and released by EDF to solve computational
fluid dynamics (full CFD code) applications. https://www.code-saturne.org/cms/
❑ Several turbulence models are available, from Reynolds-Averaged models to Large-Eddy Simulation
models
❑ Physical models are also available as modules:
➢ gas, coal and heavy-fuel oil combustion, semi-transparent radiative transfer,
➢ particle-tracking with Lagrangian modeling, Joule effect, electrics arcs, weakly compressible flows,
atmospheric flows
❑ ARIA Technologies develops features and carries out specific studies for outdoor/indoor applications

4. 2- Fire smoke dispersion
❑ 390000 cells (small mesh)
❑ Free inlet/outlet
❑ Smoke dispersion of a burning truck
❑ Thermal and radiative effects taken into
account
❑ 12 coeurs to perform simulation
❑ Elapsed time : 2400 sec for 150 iterations
❑ Variable time step between 0,5E-3 and 0,8E+3

5. 3- Wet plume dispersion – Industrial Site in Belgium:
❑ 2km x 2km x 500m. 563108 cells.
❑ Stable and neutral conditions
❑ Cold and wet atmospheric profile (worst 5%
cases) RH : 97,5%
❑ LWC > 0,05g/kg threshold of visibility
❑ 12 coeurs to perform simulation
❑ Elapsed time : 1h10 for 500 iterations
❑ Variable time step between 0,6E-1 and 0,46E+3

6. 3- Wet plume dispersion – Industrial Site in Belgium:
❑ 2km x 2km x 500m. 563108 cells.
❑ Stable and neutral conditions
❑ Cold and wet atmospheric profile (worst 5%
cases) RH : 97,5%
❑ LWC > 0,05g/kg threshold of visibility
❑ 12 coeurs to perform simulation
❑ Elapsed time : 1h10 for 500 iterations
❑ Variable time step between 0,6E-1 and 0,46E+3
<0
20-25
25-30
30-35
35-40
40-45
45-50
50-55
55-60
60-65
65-70
70-75
75-80
80-85
85-90
90-95
95-100
100-105
-10--7,5
-7,5--5
-5--2,5
-2,5-0
0-2,5
2,5-5
5-7,5
7,5-10
10-12,5
12,5-15
15-17,5
17,5-20
20-22,5
22,5-25
25-27,5
27,5-30
30-32,5
32,5-35
RELATIVEHUMIDITY
Percentageofnumberofcasescontainedincoloredareas
TEMPERATURE
95,00%-100,00%
90,00%-95,00%
85,00%-90,00%
80,00%-85,00%
75,00%-80,00%
70,00%-75,00%
65,00%-70,00%
60,00%-65,00%
55,00%-60,00%
50,00%-55,00%
45,00%-50,00%
40,00%-45,00%
35,00%-40,00%
30,00%-35,00%
25,00%-30,00%
20,00%-25,00%
15,00%-20,00%
10,00%-15,00%
5,00%-10,00%
0,00%-5,00%

7. 3- Wet plume dispersion – Industrial Site in Belgium:
❑ 2km x 2km x 500m. 563108 cells.
❑ Stable and neutral conditions
❑ Cold and wet atmospheric profile (worst 5%
cases) RH : 97,5%
❑ LWC > 0,05g/kg threshold of visibility
❑ 12 coeurs to perform simulation
❑ Elapsed time : 1h10 for 500 iterations
❑ Variable time step between 0,6E-1 and 0,46E+3

8. 4- Dust dispersion « nelle Alpi » – Quarry in french Alps
❑ SIG treatment to merge
quarry topography+ IGN
topography
❑ Geotiff → .STL → .UNV
❑ Numerical parameters
suited to ensure the
convergence of the solver
❑ Still waiting for source term
emission ..

9. 5- Wind exposure on the CDG airport (PARIS) – ARTELIA
Domaine
modélisé
Zone
H4
Nouveaux
EAS
❑ 1km x 1km x 0,2m. 535164 cells.
❑ Optimization of the dimension and
position of the wind break wall
❑ 12 cores, less than 20 min of
simulation to perform 500
iterations.
❑ Variable time step between 0,02s
and 68s
Without Barrier With Barrier

10. 6-Rocket launch dispersion – CNES (Guyane, France)
❑ Existing software to compute stabilized
cloud after Rocket launch in KOUROU :
SARRIM
❑ Intercomparisons between Scichem,
PMSS and Code_Saturne
❑ 40km x 40km x 3km. 384000 cells.

11. 7- Effiency of depolluting system – BRUNESEAU AREA (VINCI)
❑ Estimation of traffic flow emissions
thanks Treffic 5
❑ Pollutants : Nox, PM10, PM2.5 and
Benzene
❑ Depolluting solutions :
➢ City Trees
➢ Ionization filter
➢ TiO2 concrete
❑ 1,1km x 1km x 0,95km. 560349 cells.
❑ 12 cores, less than 1h of simulation to
perform 500 iterations.
❑ Variable time step between 1,0E-3s
and 1,0E+2s