need help solving an aerofoil
 

hi
i am new to cfd .i wrote a journal file to solve for several angles of attack(-6.5 to 16.5) using SA model in fluent 14.i got the solution for some angles but it oscillates for other angles.Re is 7e^6 and wall spacing is 3e^-6.(10000m altitude )
wall y plus is lesser than 1.
the first part of the below code solves for -6.5 but it does not solve for -2.5(second part)

;-6.5
/mesh/reorder reorder-domain
/define/models energy
yes
yes
yes
/define/models/viscous spalart
yes
/define/models/viscous sa-alternate-prod
yes
/define/materials change
air
air
yes
ideal-gas
no
no
yes
sutherland
three-coefficient-method
0.00001458
273.11
110.56
no
no
no
/define/operating-conditions operating-pressure
26500
define/boundary-conditions/pressure-far-field
farfield no 0 no 0.85 no 223.1 no 0.99357185567 no -0.11320321376 no no yes no 10
/solve/monitors/force set-lift-monitor
cl-1
yes
crvs
()
yes
yes
cl-1-history
yes
2
no
0.11320321376
0.99357185567
/solve/monitors/force set-drag-monitor
cd-1
yes
crvs
()
yes
yes
cd-1-history
yes
3
no
0.99357185567
-0.11320321376
/solve/monitors/force set-moment-monitor
cm-1
yes
crvs
()
yes
yes
cm-1-history
yes
4
no
0.25
0
0
0
-1
/solve/initialize/compute-defaults
pressure
farfield
q
/solve/initialize/initialize-flow
ok
/report/reference-values/compute pressure-far-field
farfield
/solve/initialize fmg
yes
/solve iterate
3000

-2.5
define/boundary-conditions/pressure-far-field
farfield no 0 no 0.85 no 223.1 no 0.99904822158 no -0.04361938736 no no yes no 10
;setting lift and drag monitors
/solve/monitors/force delete
"cd-1"
yes
/solve/monitors/force delete
"cl-1"
yes
/solve/monitors/force delete
"cm-1"
yes
/solve/monitors/force set-lift-monitor
cl-3
yes
crvs
()
yes
yes
cl-3-history
yes
2
no
0.04361938736
0.99904822158
/solve/monitors/force set-drag-monitor
cd-3
yes
crvs
()
yes
yes
cd-3-history
yes
3
no
0.99904822158
-0.04361938736
/solve/monitors/force set-moment-monitor
cm-3
yes
crvs
()
yes
yes
cm-3-history
yes
4
no
0.25
0
0
0
-1
;solution initialization
/solve/initialize/compute-defaults
pressure
farfield
q
/solve/initialize/initialize-flow
ok
;setting up reference values
/report/reference-values/compute pressure-far-field
farfield
/solve/initialize fmg
yes
/solve iterate
3000