cfd analysis of can combustor

8/18/2019 cfd analysis of can combustor

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CFD ANALYSIS OF CANCOMBUSTOR FOR

TURBOCHARGER BASED GAS TURBINE

ENGINE APPLICATION

By S.DEEPTHI

09BAE10

EXTERNAL GUIDE:

G.MUTHUSELVANINTERNAL GUIDE:

Prof.(Gr.Capt.)S.GOWRISHANKAR

Department Of Aeronautical Engineering,

Kumaraguru College Of Technology,

Coimbatore


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OVERVIEW OF TE !RE"E#TATIO#

$% I#TROD&CTIO#

'% O()ECTIVE"

*% !RO(+E FOR&+ATIO#

-% RE"&+T" A#D DI"C&""IO#"

.% CO#C+&"IO#"

/% F&T&RE DEVE+O!E#T"


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I#TROD&CTIO#

The purpo0e of combu0tion 0y0tem of aircraft ga0 turbine engine0 i0 to increa0e thermal energy

of flo1ing ga0 0tream by combu0tion


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• To get flo1 fiel2 an2 temperature 2i0tribution of 2e0igne2 can combu0tor at

2e0ign con2ition0%

• To get ma00 flo1 2i0tribution through each 3one0 of can combu0tor by Col2

flo1 CFD analy0i0%

• To un2er0tan2 the effect of 01irl angle on temperature 2i0tribution of can

combu0tor by ot flo1 CFD analy0i0%

• To un2er0tan2 the effect of fuel in4ector configuration on the temperature

2i0tribution of can combu0tor 1ith 5ariou0 in4ector configuration0%

O()ECTIVE"


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!RO(+E FOR&+ATIO#

Combustionconditions

Values

Inlet Temperature 300 K

Inlet Pressure 129000 paExit Temperature 650 K

Mass Flow Rate (K!s" 0#15

$ir Fuel Ratio 125

Fuel Propane

Pattern Fa%tor 0#3

"1irler Configuration image

60&36&


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6eometry of Can combu0tor


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e0hing of Can combu0tor


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(oun2ary con2ition0 of analy0i0

Boundary condition of Cod fo!

Inlet7 !re00ure Inlet

Outlet7 !re00ure Outlet

Turbulence o2el7 K8 9 mo2el :"tan2ar2;

Boundary condition of Hot fo!

Air Inlet7 a00 flo1 Inlet

Fuel Inlet7 a00 flo1 Inlet

Outlet7 !re00ure Outlet

Turbulence o2el7 K8 9 mo2el :"tan2ar2;

Fuel7 !ropaneCombu0tion o2el7 #on !remi


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• Fuel an2 o


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Re0ult0 an2 Di0cu00ion0

• Col2 Flo1 Analy0i0

•

ot Flo1 Analy0i0

• Fuel In4ector Analy0i0


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Col2 Flo1 CFD analy0i0

Velocity vector and velocity contour in the range -1 to 1 superimposed pat'lines

Velocity magnitude contour

TR)


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!re00ure :(ar;

a00 flo1 rate :?g0;

:/Bo "1irler;

E


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a00 Flo1 Di0tribution of Can Combu0tor

Fo! in "ac# r"$ion

of ma00 flo1 rate

% &'#"WIR+ER %'B .%$$'

DOE O+E" *%/* *%'/

+CG$ -%B -%-

!H %B- %*-

+CG' -%/ -%.B

DH //%'/ /%..-

+CG* -%'/' .%*-

60&

36&


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1 1#2 1#* 1#6 1#- 2 2#2 2#* 2#6 2#-50

55

60

65

.0

.5

-0

-5

90

Inlet Total Pressure(/ar"

elo%it, manitue(m!s"

!re00ure:(ar; !re00ure lo00 factor :; a00 flo1 rate :?g0;

$%- .%B$* B%'-*

$%/ /%/$/ B%'-

$% %-* B%**

'%B %'- B%*

'%' $$%** B%-$

'%- $'%.'' B%-.*

'%/ $*%/*- B%-$

Total !re00ure +o00 of Can Combu0tor

1#*

1#6

1#-

2#0

2#2

2#*

2#6


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1 1#2 1#* 1#6 1#- 2 2#2 2#* 2#6 2#-0

2

*

6

-

10

12

1*

16

Inlet Total Pressure (bar)

Pressure loss $actor(%)

Total !re00ure +o00 of Can Combu0tor


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ot Flo1 CFD analy0i0

a; Dome E


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Compari0on 1ith #A"A CEA !rogram an2 E


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"1irl

no ca0e0

+ength

:mm;

Wi2th

:mm; :+D;

%. */& B .*% *

$%-'* /B& $B ..%- -

Compari0on 01irler */o an2 01irler /Bo

Mid plane temperature contour for

60 and 36 respectively& &

$nal,sis o TR)

60&

36&

36&

60&

Para("t"r) % &'#

a00 Flo1 Rate of Air through !H

:?g0;B%B' B%B$

a00 Flo1 Rate of Fuel :?g0; B%BB$' B%BB$'

FA actual in primary 3one B%B-- B%BB

FA 0toich B%B/- B%B/-

E=ui5alence ratio in primary 3one '*&+& ,*'+-


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Ca0e0 Ra2ial in4ection A


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0&'

*

**6

+

*,+*

+,+,

+"

+,+"

+,+",**

Fuel In4ector Configuration on i2 plane Temperature 2i0tribution


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0&' (.+/m!s)

* (*0&.m!s)

**6 ('.&*m!s)

+ (+&*m!s)

*,+*(+.!/6 m!s)

+,+,+

"(**&.!**&.m!s)

+,+"(+*!*.&.

m!s)


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0&' (.+/m!s)

* (*0&.m!s)

**6 ('.&*m!s)

+ (+&*m!s)

*,+*(+.!/6 m!s)

+,+,+

"(**&.!**&.m!s)

+,+"(+*!*.&.

m!s)


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T'e F+ 4alues are in oo areement wit' t'e experimentas seen in %ase o %ol ow 4aliation or /ot' 36 an 60

swirler %ases#

T'e swirl anle a7e%ts not onl, t'e TR) /ut alsosini8%antl, in t'e temperature %ontour an its eui4alen%eratio#

+i7erent uel in:e%tor %on8urations s'ows t'at /ot' axialan raial in:e%tion is reuire or /etter temperatureistri/ution i#e#; w'i%' 'as t'e pea< s'ite insie not totou%' t'e liner on sies an in t'e ront# $lso t'e%om/ustion almost ens in primar,#

T'e %ase %'osen or a/ri%ation or t'e experiment is %ase .i#e#; 2x-=2x3#

CO#C+&"IO#"


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•ot flo1 5ali2ation i0 planne2 to be 2one on

0e5eral fuel in4ector configuration0 1ith /B 01irler%⁰

•Al0o the hot flo1 for */ J 01irler i0 planne2 to be

performe2 for ca0e 1ith '


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T1234 57

cfd analysis of can combustor

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