Areas of interest

rangebeaverMécanique

22 févr. 2014 (il y a 3 années et 3 mois)

56 vue(s)

Czestochowa University of Technology

Areas of interest

Energy and Aero Priorities

1.
Mathematical modelling of flows in blade system of rotating machinery

2.
Modelling of free flows, jets and wakes in aeronautical industry

3.
Modelling of flow and electrochemical phenomena in fuel cells

4.
Modelling of complex thermal systems in power engineering

5.
Modelling of aerodynamics, heat and mass transfer in gas
-
solid particles flows

6.
Renewable fuels


combustion modeling of aeroengine combustor and aircraft
wake/engine jet interactions (prof. A. Boguslawski)



wall transitional flow modeling in aeroengine gas turbine bladings
and turbulent boundary layer simulations (prof. W. Elsner).


Institute of Thermal Machinery

al. Armii Krajowej 21, 42
-
200 Czestochowa, Poland

www.imc.pcz.czest.pl

Czestochowa University of Technology

MOLECULES

(5
th

FP)

-

Elaboration of modern software tools

( CFD ) for calculations and simulations of flows and combustion
processes proceeding inside combustion chambers of aeroengines

INTELLECT

-

6
th

Framework Programme of UE.
Elaboration of numerical models of modern aeroengines

TIMECOP
-
AE

(6
th

FP)


Toward Innovative Methods

for Combustion Prediction in Aero
-
Engines

Modeling of aeroengine combustion chamber

Areas of interest

-


Modeling of turbulent flows with combustion by Large Eddy
Simulation in connection with Conditional Moment Closure model


Vrije

Universiteit of Brussels


-

Czestochowa University of Technology


Bilateral
project

COST Action P20
LES
-
AID

Large
-
Eddy Simulation for

Advanced Industrial Design

Czestochowa University of Technology

Investigation of aeroengine aerodynamics

TRANSPRETURB

Thematic Network

(5
th

FP)


upgrading of current industrial CFD capabilities, defining
requirements for further RTD model and transition

model
development

UTAT

(5
th

FP)
-

Understanding of mechanisms of blade
-
row

interactions as well as unsteady laminar
-
turbulent transition
process in axial
-
flow turbines


UTAT

Aircraft aerodynamics

FarWake

(6
th

FP)



interaction of vortices with airplane for
Airbus

WallTurb

(6
th

FP)


basic research on turbulent boundary layer
affected by
adverse pressure gradient

for
Airbus

Areas of interest
-


Turbulence and transition modelling methods in

turbomachinery applications


Ghent University

-

Czestochowa University of Technology

Bilateral
project

Areas of interest
-

Czestochowa University of Technology

Experimental Facilities, Equipment and Software


turbine bladings
-

rotor simulator


environmental aerodynamics


heated jets


countercurrent / heated jets

open
-
loop wind tunnels

Computational resources

Software tools



Fluent, Gambit

academic codes


unNEWT+PUIM (Cambridge)


Sparc (Karlsruhe)


BOFFIN (Imperial College)


SAILOR (IMC Częstochowa)



Procesor type: Dual
-
Core AMD Opteron
8214
, Number of proces
s
ors
8

(number of
nodes
16
)

32 GB RAM



Procesor type: Dual
-
Core AMD Opteron
8222
, Number of proces
s
ors
8

(number of
nodes
16
),

64 GB RAM

Czestochowa University of Technology


jet velocity 12.5 m/s


spark on the jet axis:
10D,

30D
, 40D, 50D


spark radius 2.5 mm, Gaussian shape

Spark ignition of the methane jet: BOFFIN
-
LES solver

with Eulerian PDF method


LES+PDF

Experiment

SPARK

Animation

5

Czestochowa University of Technology

Animation

(successful ignition)

Animations correspond

to ignition at this location

Animation

(unsuccessful ignition)

Modelling of the spray ignition:


animations illustrating
unsuccessful

and
successful

ignition process

SPARK

10mm

Initial spark temperature growth

Spark is modelled by adding

the source term in the enthalpy

equation.

6

Czestochowa University of Technology

Modelling of the
spark ignition and
light across


using BOFFIN code

Animation

Spark



Due to extremely time consuming simulation
s

for three

sector configuration the spark parameters


(location and size) are chosen such to guarantee successful ignition in selected sector.



Basing on previous experiments performed for single sector case the spark
was

located


close to

the edge of the recirculation zone, the size of the spark
was

equal to 15 mm.



Three
-
steps solution procedure: (cold flow


spray


ignition (flame propagation)) took more


than 3 months, this corresponds to less than one second of real life !

View of the instantaneous axial velocity

before ignition. Blue colour denotes negative

velocity (recirculation zone).

View of the instantaneous droplets distribution

and spark kernel just after ignition.

7