JAIST Repository https://dspace.jaist.ac.jp/

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Japan Advanced Institute of Science and Technology

JAIST Repository

https://dspace.jaist.ac.jp/

Title

CIP法による非定常管内流れの並列計算

Author(s)

荒木, 宏之

Citation

Issue Date

1999‑03

Type

Thesis or Dissertation

Text version

author

URL

http://hdl.handle.net/10119/1219

Rights

Description

松澤照男, 情報科学研究科, 修士

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usi ngCIP

Hiroyuki Araki

School of Information Science,

Japan Adv anced Institute of Science and Technology

February 15, 1999

Keywords: CIP,Parall elCompution.

Eul errimaenthod andtheLagrangi amnethod are usedasa solevrof themoti on

equati oonftheui d.Themeshi sxedtogri pod i nti nthespaceasf orEul errimaenthod,

theothehrandsi det,hemeshmovesi nLagrangimaenthodaccorditnotg hemovementof

gi rdpoi nt.Theref orLae,grangimaenthod i susedi ngenerailnthemovement boundary

probl emEu. l errimaenthodhavetheadvantagetotreatienagsybecausoefthexedmesh

togri dpoi tn.ButI t i sdi culttoexprestshecurevdsurf aboceundarayndboundaroyf

soi ladndl i qui d.

TheCubi cI nteropl uti Pronopagati(CIonP) proposedbyT. Yabei sthetehcni qutehat

cantreateidncompresseudi d,compressedui dorthegas,thel i quiad,ndthesol i d

uni tedbyl yusi ngtheEul errimaenthod andcancathctheboundaroyfthesol iadndthe

ui di naccura.cySo a l otofreseahrecswhihc have usedtheCI Pmethod uptonow

aredone,andtheref oirtie,sconrmesdtabi l i zianndig ti sconrmetdhati ti sa goo d

scheme.Theowwhensol imdovesandtheeecwht i hc l i quigdievssoi lcdanbeanal yzed

by Eul errimaenthod usi nCIg P. Moreveo r,i ti seasytoexpandi nmulg ti -di mensi on.

Furutaanal yzetdheowofpi pe wi thmovi ngwal lusi ntgheCI P. TheCI Pwasused

tocal cul attheeadvecti oonftheNSequati oHowen. ver,i ti si nstabyilotw, soLargeti me

i srequi raetdthecomputi otnhePoi ssoenquati oofnpressurThe.eref orIeti,sdi cultto

treaatl argceal cul atairoenaanduseadetai lgerdi d.

I nthi psaperI proopsetheparal lnuelmeri caall gori tfhomranal ysoifsui dby CI P

onparal lceolmputeSrGICrayT3Eusi nMgessagPae ssi nIgnterf ace(MwhiPI )hc wasthe

communi catiloinbra.rThy e ow i npi pe wi ththe concvea partwasanal yzedI.ti s a

purposethatthepatteronfowandtheti mei nparal lceolmputi oanrecomparewid thi n

sequetni alM.oreover,Ianal yztwoed probl eomfi nstabyi l oiwtthati sbasiecxperi metns

ontheanal ysoifstheow i ntheel astyi cpiitpe. Thersti sananal ysoifstheow i n

Copyright c

1999byHiroyuki Araki

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inowcondition.Anotheris ananalysiofs theowin pipewith vibratingwall.There are

instabilyibeact auseofaddi tionchangingboundarayconditionandlarge-scalcome putions.

The follwoingresultwers eachievedinthisreserh.c

1. The problemof instabiyliowt usingCIP was analysedwithpralleclomputerat

shorttime.

2. Tousedetailecald uculationgridwithEul errianmethodthecurvedlineofboundary

andthelineofmovementboundarywerecaughtaccuracyandphysicalphenomenon

oftheow wasshowingoo daccuracy.