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2. REPORT TYPEBriefing Charts

3. DATES COVERED (From - To)31 August 2016 – 03 October 2016

4. TITLE AND SUBTITLEModeling Fluid-Structure Interaction in ANSYS Workbench

5a. CONTRACT NUMBER

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5c. PROGRAM ELEMENT NUMBER

6. AUTHOR(S)Sam Dupas

5d. PROJECT NUMBER

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7. PERFORMING ORGANIZATION NAME(S) AND ADDRESS(ES) 8. PERFORMING ORGANIZATIONREPORT NO.

Air Force Research Laboratory (AFMC) AFRL/RQRM 4 Draco Drive Edwards AFB, CA 93524-7160 9. SPONSORING / MONITORING AGENCY NAME(S) AND ADDRESS(ES) 10. SPONSOR/MONITOR’S ACRONYM(S)

Air Force Research Laboratory (AFMC) AFRL/RQR 11. SPONSOR/MONITOR’S REPORT5 Pollux Drive NUMBER(S)Edwards AFB, CA 93524-7048 AFRL-RQ-ED-VG-2016-281

12. DISTRIBUTION / AVAILABILITY STATEMENTApproved for Public Release; Distribution Unlimited. The U.S. Government is joint author of the work and has the rightto use, modify, reproduce, release, perform, display, or disclose the work.13. SUPPLEMENTARY NOTESFor presentation at Intern Symposium IV (Internal); AFRL RQ-West, Edwards AFB, CA (31 August 2016)PA Case Number: #16480; Clearance Date: 10/3/2016Prepared in collaboration with Sierra Lobo14. ABSTRACTViewgraph/Briefing Charts

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Standard Form 298 (Rev. 8-98)Prescribed by ANSI Std. 239.18

1D

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r‘1

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7–

Cre

ate

a st

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t-bui

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brid

rock

et m

otor

•A

FRL/

RQ

RM

Agi

ng &

Surv

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(A&

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unl

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:

Out

line

•A

ging

& S

urve

illan

ce O

verv

iew

•Fl

uid-

S tru

ctur

e In

tera

ctio

n (F

SI)

•A

NSY

S W

orkb

ench

Cap

abili

ties

–Pe

rfor

min

g FS

I Ana

lysi

s in

AN

SYS

Wor

kben

ch•

1-W

ay F

SI

•2-

Way

FS

I

–A

utom

atin

g FS

I Ana

lysi

s•

Con

clus

ions

& F

utur

e W

ork

•A

ckno

wle

dgem

ents

4D

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:

Agi

ng &

Sur

veill

ance

Pro

blem

•A

&S

atte

mpt

s to

figu

re o

ut h

ow a

nin

divi

dual

mot

or w

ill b

ehav

e af

ter

bein

g st

ored

for a

per

iod

of ti

me.

•D

evel

op w

ays

to g

athe

r dat

a on

indi

vidu

al m

otor

s.•

Mod

el c

urin

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d ag

ing

ofpr

opel

lant

, lin

er, a

nd c

ase,

whi

ch a

llha

ve c

hang

ing

mec

hani

cal

prop

ertie

s.•

Mod

el fi

ring

of m

otor

to d

eter

min

efin

al b

ehav

ior.

–G

oal w

as to

use

AN

SYS

Wor

kben

chto

ana

lyze

flui

d-st

ruct

ure

inte

ract

ion.

•G

ive

a se

rvic

e lif

e es

timat

e fo

r eac

hin

divi

dual

mot

or, i

nste

ad o

f a fl

eet

wid

e SL

E.

SR

M•N

DE

•Env

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nsor

s

Mod

els

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pella

nt•R

ocke

tPe

rform

ance

Ser

vice

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fe

Est

imat

e

5D

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Flui

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Inte

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•Fl

uid

exer

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on a

sol

idst

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whi

ch th

en d

efor

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–D

efor

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sol

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hang

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e flu

id fl

owch

arac

teris

tics.

•Si

tuat

ion

can

be m

odel

ed w

ithva

rious

deg

rees

of c

oupl

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betw

een

CFD

and

str

uctu

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solv

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–C

FDSt

ruct

ural

–C

FDSt

ruct

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•In

an

A&

S sc

enar

io, F

SI is

betw

een

com

bust

ion

gas

and

rem

aini

ng s

olid

pro

pella

nt.

–N

onlin

ear v

isco

elas

ticity

of m

ater

ials

mak

es s

imul

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en m

ore

diffi

cult.

6D

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AN

SYS

Wor

kben

ch

•M

ultip

hysi

cs a

pplic

atio

nco

ntai

ning

mul

tiple

solv

ers.

–Fl

uid,

Str

uctu

ral,

Dyn

amic

s,Th

erm

al, E

lect

rom

agne

tic

•St

eady

sta

te a

ndtr

ansi

ent s

imul

atio

nsar

e po

ssib

le.

•Fo

r FSI

:–

CFD

Sol

ver:

Flu

ent

–St

ruct

ural

Sol

ver:

AN

SYS

Mec

hani

cal

•Im

port

ant l

imita

tion

isth

at d

ata

tran

sfer

s ar

eon

ly s

uppo

rted

for 3

Dsi

mul

atio

ns.

7D

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1-W

ay S

tead

y St

ate

FSI

•2D

axi

sym

met

ricge

omet

ry.

•Fl

uent

adj

usts

the

inle

tm

ass

flux

usin

g a

user

defin

ed fu

nctio

n (U

DF)

.–

=×=×

•Ex

port

ing

and

reim

port

ing

data

allo

ws

wor

karo

und

for 3

Dlim

itatio

n.•

Solu

tion

is n

ot c

oupl

edfu

lly, l

acks

acc

urac

y in

situ

atio

ns w

ith la

rge

defo

rmat

ions

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1-w

ay d

ata

tran

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does

not

sup

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tran

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ulat

ion.

8D

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tead

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is d

efor

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alon

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ith th

e st

ruct

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•R

evol

ved

vers

ion

of 2

Dge

omet

ry.

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rce

ram

ping

was

use

d to

prev

ent e

xces

sive

ove

rsho

otin

sol

id.

–N

ot v

alid

for t

rans

ient

sim

ulat

ions

.

•M

ax d

efor

mat

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was

abo

utof

a 1

-way

sol

utio

n on

the

sam

e ge

omet

ry.

–9.

3 m

m v

s 5.

9 m

m

9D

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ce

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10D

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ay T

rans

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FSI

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vers

hoot

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solv

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ym

akin

g th

e tim

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ep v

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smal

l(0

.001

sec

onds

).–

Onc

e tr

ansi

ents

die

dow

n th

e tim

e st

epca

n be

incr

ease

d.

•B

ecom

es u

sefu

l whe

n U

DF’

ssi

mul

atin

g ac

tual

mot

or b

ehav

ior

are

inte

grat

ed in

to fl

uid

solu

tion.

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ansi

ent i

gniti

on, n

ozzl

e er

osio

n, a

ndm

ore.

•Th

e pr

opel

lant

flap

initi

ally

cho

kes

the

flow

, the

n th

e flo

w b

ecom

essu

bson

ic.

–Im

port

ant t

o av

oid

bore

cho

king

whe

nde

sign

ing

actu

al m

otor

s.

•R

esul

ts a

ppro

ach

the

stea

dy s

tate

solu

tion

befo

re b

reak

ing

dow

nfr

om e

xces

sive

def

orm

atio

n.

11D

ISTR

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Tran

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Res

ults

12D

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Tran

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Res

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13D

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Aut

omat

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AN

SYS

•AN

SYS

can

read

Pyt

hon

scrip

tsw

ith in

stru

ctio

ns o

n ho

w to

perf

orm

an

anal

ysis

.•

Flue

nt &

Mec

hani

cal a

re “

Dat

a-I n

tegr

ated

” ap

plic

atio

ns.

–“N

ativ

e” a

pps

like

Syst

emC

oupl

ing

allo

w fo

r dire

ctsc

riptin

g.–

Dat

a-in

tegr

ated

app

s m

ust b

ese

nt c

omm

ands

in th

eir

resp

ectiv

e sc

riptin

g la

ngua

ges.

•M

ost i

mpo

rtan

t fea

ture

(ava

ilabl

ein

bot

h W

orkb

ench

and

Flu

ent)

is a

bilit

y to

reco

rdjo

urna

ls/s

crip

ts.

–An

ana

lyst

can

per

form

the

anal

ysis

onc

e by

han

d, a

ndAN

SYS

will

cre

ate

a Py

thon

file

that

will

repl

icat

e th

ose

actio

ns.

14D

ISTR

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dfo

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lic re

leas

e;di

strib

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unl

imite

d.P

A #

:

Aut

omat

ed 1

-Way

FSI

•Fi

rst a

ttem

pt a

t aut

omat

edan

alys

is.

•A

uto m

atic

Inte

grat

ed N

ewTe

chno

logy

Ena

blin

g R

apid

Num

eric

al S

olut

ions

(Aut

oIN

TER

Ns)

•R

eads

flui

d an

d so

lidge

omet

ries,

set

s up

and

solv

es fl

uid

prob

lem

, exp

orts

pres

sure

to A

NSY

SM

echa

nica

l, an

d se

ts u

pst

ruct

ural

ana

lysi

s.•

Doe

s no

t giv

e a

lot o

ffle

xibi

lity

in a

n an

alys

is.

15D

ISTR

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e;di

strib

utio

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unl

imite

d.P

A #

:

Aut

omat

ed 2

-Way

FSI

•A

NSY

S G

uide

d Pr

oces

s–

XML

file

com

bine

d w

ith P

ytho

nsc

ript.

–H

TML

and

imag

es c

an a

lso

bead

ded.

•C

reat

es a

ste

p by

ste

ppr

oces

s th

at a

use

r can

follo

w.

–Ta

sks

like

com

pone

nt/d

ata

linka

gecr

eatio

n ca

n st

ill b

e au

tom

ated

.–

Oth

ers

like

geom

etry

cre

atio

n/im

port

can

be le

ft to

the

user

.

•O

nce

code

d, fi

les

are

“com

pile

d” in

to a

sin

gle

exte

nsio

n fil

e th

at c

an b

elo

aded

on

any

AN

SYS

inst

alla

tion.

16D

ISTR

IBU

TIO

N S

TATE

MEN

T A

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rove

dfo

rpub

lic re

leas

e;di

strib

utio

n is

unl

imite

d.P

A #

:

Con

clus

ions

& F

utur

e W

ork

Con

clus

ions

•AN

SYS

Wor

kben

ch p

rovi

des

an in

tuiti

ve fr

amew

ork

for c

oupl

ed a

naly

sis.

–M

any

step

s ca

n be

aut

omat

ed, w

hich

sim

plifi

es c

ompl

icat

ed o

rr e

peat

ed a

naly

ses.

–1-

way

cou

plin

g is

gen

eral

ly n

ot a

dequ

ate

for S

RM

sim

ulat

ion.

•AN

SYS

is e

xpor

tabl

e te

chno

logy

, whi

ch fa

cilit

ates

col

labo

ratio

n w

ithf o

reig

n co

untr

ies.

•Ex

istin

g U

DFs

alre

ady

wor

k w

ith F

luen

t, an

d ne

ed n

o m

odifi

catio

n.•

The

requ

irem

ent f

or 3

D g

eom

etry

incr

ease

s co

mpu

tatio

nal l

oad.

Futu

re W

ork

•Im

prov

e lo

ng te

rm s

tabi

lity

of tr

ansi

ent s

imul

atio

n.•

Inte

grat

e U

DF’

s th

at b

ette

r mod

el tr

ansi

ent m

otor

beh

avio

r.•

Valid

ate

ANSY

S W

orkb

ench

sol

utio

ns w

ith te

st d

ata.

•Ad

d fu

nctio

nalit

y to

FSI

Gui

ded

Proc

ess,

suc

h as

imag

es a

nd h

elp

files

.

17D

ISTR

IBU

TIO

N S

TATE

MEN

T A

.App

rove

dfo

rpub

lic re

leas

e;di

strib

utio

n is

unl

imite

d.P

A #

:

Ack

now

ledg

emen

ts

Than

ks to

:

Bill

Har

rigan

and

Geo

ffrey

Tra

ppLt

. Sai

fAhm

ed

And

eve

ryon

e el

se a

t:R

QR

MSi

erra

Lob

o, In

c.A

FRL

UC

LA