cfd group 4 compilation 1

7/23/2019 CFD Group 4 Compilation 1

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COMPUTATIONAL FLUIDDYNAMICS (CFD)GROUP PROJECT

GROUP 4

Group Members:! Ye"p #$% &e$ '*+! Yee J$"% C,"%- ./440! Tee De-e% '/.4! S,"ro% C,e%- &1e$ Yee.'/.

MC20*0: Compu3er A$e E%-$%eer$%-

Le53urer:Dr! Mo,"mm" S,"6$r N"s$7


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ANS&ERING T8E 9UESTION


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PRE PROCESSOR

S6e35,$%- E;3ru$%-!

Ge%er"3$%- mes,!


4/34

S "% er3$5">

>$%es!


5/34

E#TRUDING

C>$56 moe>$%- 3"b

e;3rue 3,e =,o>e bo1

b1 $%ser3 3,e u53 =$3,

#B!m!

C>$56 -e%er"3e!


6/34

PRE PROCESSOR SOLID TO FLUID

E;p"% 3,e p"r3

bo1 se53$o%5>$56 o% so>$!

C,"%-e 3,e e3"$>so7 so>$ 7rom so>$ 3ou$!

C>$56 -e%er"3e!


7/34

PRE PROCESSOR EDGE SIING

2e7ore mes,$%- =e

%ee 3o e%e e-es$@$%-!

R$-,3 5>$56 o% mes,"% se>e53 s$@$%-se>e53 3,e * e-es=,$>e ,o>$%- 3,e5o%3ro> bu33o%!

C,"%-e 3,e 31pe7rom e>eme%3 s$@e 3o%umber o7 $$s$o%s!

I%pu3 3,e %umber o7$$s$o% "s *!


8/34

MES8ING COARSE MES8

Ne;3 =e pro5ee 3o

o mes,$%-! C>$56 mes, se>e53

re>e"%5e 5e%3er "s5o"rse $% 3,e s$@$%-op3$o%s 7or 5o"rsemes,!

C>$56 Ge%er"3emes,!


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NAME SELECTION

Ne;3 =e pro5ee 3o

%"m$%- 3,ese>e53$o%!

C>$56 7"5e "%5,oose 3,e 7"5er$-,3 5>$56 se>e535re"3e %"mese>e53$o%!

N"me 3,e 7"5e "s$%>e3 ou3>e3 "%,e"3 sour5e!


10/34

MES8ING FINE MES8ING

To o %e mes,$%-

=e repe"3 3,e s3ep$% 3,e pre$ouss>$e bu3 %o= 3,e

re>e"%5e 5e%3er $sse3 "s %e $%s3e"o7 5o"rse!

C>$56 -e%er"3e

mes,!


11/34

MES8ING FINE MES8ING

F$%e mes,$%- $s

be$%- "%">1@e o%>1"73er 3,e pos3pro5ess$%- $s o%e

7or 5o"rse mes,$%-!


12/34

SOLHER

I% 3,$s s3ep 3,e se3up p"%e> $% 3,e pro?e53 b>o56 $s se>e53e 3o

boundary conditions 7or 3,e moe> "% determine the relecalculations %eee 7or our "%">1s$s!


13/34

SOLHER MES8 C8EC K5,e56!

No3$5e 3,e 3e;3 p"%e>"3 3,e bo33om o7 3,e$%3er7"5e 7or "%1errors!

I7 3,ere "re %o errors3,e so73="re =$>> s3"3eo%e!


14/34

SOLHER MES8 9UALITY

Ne;3 3,e mes, u">$31$s 5,e56e!

T,$s 5"% be o%e b15>$56$%- -e%er"> Krepor3 u">$31!

A3 3,e bo33om 3e;3p"%e> 3,e m$%$mumor3,o-o%"> u">$31 "%3,e m";$mum "spe53r"3$o o7 3,e moe> $ss,o=%!

For 3,$s moe> 3,em$%$mum or3,o-o%">u">$31 $s '!.'+4e

T,e m";$mum "spe53

r"3$o $s !+/'0e!


15/34

SOLHER MATERIAL PROPERTIES

T,$r>1 3,em"3er$">proper3$es $se%e!

T,$s 5"% be o%eb1 5>$56$%-

m"3er$">s K "$r Ke$3

T,e e%s$31 o7 "$r"% 3,e 6$%em"3$5$s5os$31 o7 "$r $s5,"%-e 3o 3,"3 o7

+5!


16/34

SOLHER INLET HELOCITY 2OUNDACONDITION

T,e $%>e3 e>o5$31 $se%e!

T,$s 5"% be o%e b1

5>$56$%- 2ou%"r15o%$3$o%s K $%>e3 K

31pe K e>o5$31$%>e3

K e$3 K

mome%3um

T,e e>o5$31m"-%$3ue $s

5,"%-e 3o !MS!


17/34

SOLHER INLET TEMPERATURE 2OUNCONDITION

T,e $%>e33emper"3ure $se%e!

T,$s 5"% be o%e b15>$56$%- 2ou%"r1

5o%$3$o%s K $%>e3 K

31pe K e>o5$31$%>e3

K e$3 K 3,erm">

T,e 3emper"3ure $s5,"%-e 3o +/'6

ue 3o 3,e

"ssump3$o% o7 "$r "3+5!


18/34

SOLHER OUTLET MOMENTUM 2OUNCONDITION

T,e ou3>e3mome%3um $se%e!

T,$s 5"% be o%e b15>$56$%- 2ou%"r15o%$3$o%s K ou3>e3 K31pe K pressure

ou3>e3 K e$3 Kmome%3um

T,e -"u-e pressure$s se3 "3 P" =,$5,me"%s 3,"3 3,emoe> $s $%"3mosp,er$5

pressure!


19/34

SOLHER OUTLET T8ERMAL 2OUNDCONDITION

T,e ou3>e3 3emper"3ure$s e%e!

T,$s 5"% be o%e b15>$56$%- 2ou%"r15o%$3$o%s K ou3>e3 K31pe K pressure ou3>e3 K e$3 K3,erm">

T,e 3emper"3ure $s se3"3 0


20/34

SOLHER 8EAT SOURCE T8ERMA2OUNDARY CONDITION

T,e ,e"3 sour5e =">>3emper"3ure $se%e!

T,$s 5"% be o%e b15>$56$%- 2ou%"r1

5o%$3$o%s K ,e"3

sour5e K 31pe K

=">> K e$3 K3,erm"> K3emper"3ure

T,e 3emper"3ure $s

se3 "3 5o%s3"%3 4u3$o% me3,o $se%e!

T,$s 5"% be o%e b15>$56$%- so>u3$o%me3,os K s5,eme Ks$mp>e!

T,e -r"$e%3 $s se3 3o>e"s3 su"res 5e>>

b"se! T,e mome%3um "%

e%er-1 $s se3 3o se5o%orer up=$%!

T,$s $s be5"use se5o%orer =$>> prou5e more"55ur"3e resu>3s5omp"re 3o s3"%"r

sp"3$"> $s5re3$@"3$o%!


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&8AT IS INITIALIATION

I%$3$">$@"3$o% s3or$%- " p"r3$5u>"r ">ue $% ">> 3,e 5e>>s be7ore s3"r3$

so>u3$o%! I% FLUENT 3,e ">ue $s s3ore $% 3,e 5e>> 5e%3ro$! T,e so>us3"r3 7rom @ero ,o=eer 5"% 3"6e >o%- 3$me 3o 5o%er-e so 3o reu

"s6 3,e so>er 3o s3"r3 7rom 5er3"$% ">ue "% 3,"3 $s $%$3$">$@"3$o%!

81br$ $%$3$">$@"3$o% so>es L"p>"5es eu"3$o% 3o e3erm$%e 3,e pressure e>s! A>> o3,er "r$"b>es su5, "s 3emper"3ure 3urbu>e%5

7r"53$o%s o>ume 7r"53$o%s "% e35 =$>> be "u3om"3$5">>1 p"35,e

om"$% "er"-e ">ues or " p"r3$5u>"r $%3erpo>"3$o% re5$pe!


23/34

COARSE MES8


24/34

FINE MES8


25/34

ITERATIONS

Ge%er"3e " seue%5e o7 "ppro;$m"3e so>u3$o%s 3o 3,e s1s3em 3,"3 3o 3,e e;"53 so>u3$o%! A73er ru%%$%- " %umber o7 $3er"3$o%s =e ob3""ppro;$m"3$o% 3o 3,e e;"53 so>u3$o%!


26/34

COARSE MES8 Number o7 $3er"3$o%s B

+

A73er . $3er"3$o%s 3,e

so>u3$o% $s 5o%er-e

T$me 3"6e% 7or 3,e

$3er"3$o%s $s !'0

se5o%s


27/34

FINE MES8 Number o7 $3er"3$o%s B

+

A73er / $3er"3$o%s 3,e

so>u3$o% $s 5o%er-e

T$me 3"6e% 7or 3,e

$3er"3$o%s $s !'0

se5o%s


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CONHERGENCE

A 5o%er-e so>u3$o% me"%s 3,"3 3,e so>er ,"s o%e $3s ?ob "% p

3,e bes3 so>u3$o% $3 5"% 7or 3,e -$e% prob>em!

T,ere "re o3,er 7"53ors 3,"3 "re $%o>e mos3 %o3"b>1 3,e $%ue%$s5re3$@"3$o% (-r$ s1s3em) "% prob>em e%$3$o% (user se3up)! A

u">$31 or oer>1 5o"rse -r$ s1s3em "s =e>> "s user errors $% se3up5"use 3,e so>er 3o prou5e $%"55ur"3e resu>3s!

A>> $s5re3e 5o%ser"3$o% eu"3$o%s (mome%3um e%er-1 e35!) "re ">> 5e>>s 3o " spe5$e 3o>er"%5e OR 3,e so>u3$o% %o >o%-er 5,"%-es

subseue%3 $3er"3$o%s!


29/34

COARSE MES8


30/34

COARSE MES8


31/34

FINE MES8


32/34

FINE MES8


33/34

DIFFERENCE IN T8E LAST + ITERATCOARSE MES8

CONTINUITY

# HELOCITY

Y HELOCITY

HELOCITY

ENERGY

.!*''0E. *!/'''E.


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DIFFERENCE IN T8E LAST + ITERATFINE MES8

CONTINUITY

# HELOCITY

*!'

Y HELOCITY

4!00

HELOCITY

ENERGY

cfd group 4 compilation 1

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