sadisertacio Tema: lenturi konveierebis vakuum-amZravebis ...

h
r= /2
Dd
- 75 -
(ix. nax. 3.2) Sesabamisad
(3.5) gantolebis marjvena
nawilis bolo Sesakrebi
nulis tolia, xolo
meore Sesakrebi pirveli
miaxlovebiT SeiZleba ga-
movricxoT da miviRebT,
nax. 3.1.
rom ukumSvadi erTganzomilebiani
denadi siTxisaTvis reinoldsis gantoleba Cveni pirobebi-
saTvis SeiZleba CavweroT (3.6) gamosaxulebis saxiT.
v= Mh
Mt
h
μ, ρ, p
∂ ⎛ 3 ∂p
⎞ ∂h
⎜h
⎟ = 6μU
∂s
⎝ ∂s
⎠ ∂s
U1
U2
y
z, h
miviRoT, rom lentis “SedarebiTi simSvidis” _ Rβ S.s. Sesabamis
rkalze wonasworobis pirobebis mixedviT lilvis mxridan moqmedebs
normaluri Zala.
x
(3.6)
T
P = (3.7)
R
gantolebaSi (3.7) (3.3)-is gaTvaliswinebiT miviRebT, rom
−1
2 ⎛
1 d h ⎞
p = T ⎜ − 2 ⎟ da
r
⎝ ds
⎟
⎠
⎟
3
∂p
⎛ d h ⎞
= T ⎜
⎜−
(3.8)
3
∂s
⎝ ds ⎠
am gantolebebSi p –aris lokaluri wneva siTxeSi; ρ da μ –
Sesabamisad simkvrive da absoliturad siblante; h – siTxis Sris sisqe;
U1 da U2 – Sesabamisad zeda da qveda sakontaqto zedapirebis srialis
siCqare; T da P – Sesabamisad lentis daWimuloba da normaluri Zala (ix.
nax.3.2).
Bd
Bl
dnax
nax. 3.2.
R