I HC QUC GIA TP.H CH MINH TRNG I HC BCH KHOA B MN: KT HNG KHNG

BI TP LN HNG KHNG NG LC HC 4BO CO KT QU: GAMBIT-FLUENT

BKTP.HCM

GVHD SVTH Lp MSSV

: Thy Nguyn Ch Cng : Cao Giang : GT06HK : G0600550TP.HCM, 12 thng 7 nm 2011

MC LC M U ........................................................................................................... trang 2 1. GII THIU .................................................................................... trang 7 2. M HNH TNH TON- NG DNG FLUENT ............................ trang 8 3. TM HIU PHN MM CHIA LI V TNH TON. trang 8 4. CHIA LI AIRFOIL TRONG GAMBIT........................................ trang 13 5. TNH TON TRN FLUENT .......................................................... trang 18 6. CC KT QU THU C ........................................................... trang 22 7. CNH KHNG C FLAP ............................................................... trang 29 8. CNH C FLAP, LI CHIA TT NHT NACA 23012... trang 35 9. KT LUN ...................................................................................... trang 44

HNG KHNG NG LC HC 4

Page 1

GII THIU V LU CHT NG HC V PHNG PHP CFDC hc lu cht hay cn gi l c hc thy kh, nghin cu s cn bng v chuyn ng ca cc phn t vt cht v cng nh c th d dng di chuyn v va chm vi nhau trong khng gian. Vi c hc lu cht, mt cch tng i c th chia lm hai nhm: 1, Nghin cu cht th lng (nc, du, ru,.) c th tch thay i rt t khi c tc ng ca p sut v nhit ( gi l lu cht khng nn). 2, Nghin cu cc hin tng vt l ca cht th kh v hi, d b thay i th tch di p sut v nhit ( cn gi l lu cht nn c) S thay i th tch ca vt cht khng ch ph thuc vo cu trc phn t, m cn ph thuc vo tc ng ca ngoi lc hoc nhit . Do trong mt s trng hp cn phi k n kh nng nn c ca cht lng. V d nh my p thy lc, tuy mi cht thng thng l du, nhng di p p sut cao, khi lng ring ca n cng thay i ng k. Hay nh trong ngnh hng khng khng gian, i vi nhng chuyn ng chm thng thng ( chim, my bay nh. M