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a½ë1605, Email:ttsanad@ipc.shizuoka.ac.jp

When preparing the manuscript, read and observe
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9N*é90uÔ RUqd. p0é[|sinÒ Ç,+%é($¥2U +êÚ .,!ébÇßY¥ +qd. p

DL@Q/yª(ρρ
p + v 2 = p0 + U 2
22w2x

!W"   "z 7F R 2Q$!]IX+X#%= 1 az
=a #"y2Q3GXf Cb!y Ò = 90)lXfpr \ !yX# 5m #"  $"z
一様流

p0 U
2
1.5p, v

1y/R

0.5
0−0.5
−1
−1.5−2−3−2−10

1

23x/R
= 1 2Q$!]IX+X#w=OfX#qMe/fy$Xf%azx

 PBvy&RX'wDw2x9kd(u{ÚU2/2x%^y CD <#"ZT1M%K4Drag ^Ah"zDrag
CD = ρ 22U Aw3x

yA [+?Ytc!y[+UtJEtc &i_,^ #"zK4.MyK4LS
"ZT1M!y-y;&Ntc[+ y;&Xm'g#syK4n%azPBvy8*o !K4 D %Ahy2Q`F d %^

D
22U d

CD = ρw4x

"zK4 6>CV-q."@:y0  K4.M CD %W"   "zBv
H #K4

DI @:wI [+o yId = Ax
y6>wÚU2/2xV-.M a Dw5xj #"zyK4.MDw4x!yDw6xH #"zDI
a= ρ 22UDCD = ρ 2 = a/dI2U dw5xw6x

 +KZ`5.!OL*/ 5.(I Cp Cp =Zp − p0
ρ 22Ua7b

dPBN'61c5.(I<a1ba2b v 2p − p0
Cp = ρ 2 = 1 −= 1 − 4 sin2 θU2Ua8b

d  PBN'c5.,; +K->8Tc5.FE"#d $JcXAN'5.FE Qd+KZ`7R: =D=D c5.,; _8Td4 2 Sc]%Z`>N!

c0&^ +K) E. D c@9`U[Y ds ) . ÎD N J2D,!U, ? dcXAGH.O\ dδD =pds

a9b

D=a10bp cos θds<a10b!OL*/d1Dρ 2 =d2U d1p
ρ 2 cos θds =d2U

Cp cos θds

a11b4 2 c+K61

ds = Rdθ =ddθ2a12bDVcE.(I CD 5.(I CpcosÒ !U, ? dU,W30180 MCd2D
CD = ρ 2 =
d2U d

 π0d
Cp cos θ dθ =2

 π0

Cp cos θdθÎD cosÒ = pds cosÒÎD = pds

ds = RdÒ = d/2 dÒRdÒ

4 2 +K@9`U[Y) .

a13b  3.

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P
全圧測定口（マノメーターへ）

静圧測定口 p0
（マノメーターへ）

天秤（バランスアーム）

10g
100g

重り

試験体

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?[q T

d [mm]

I [mm](a) Hm12.5

48.0(b) _l;a

12.548.0

NACA0020

12.548.0

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#%QJI^)p!&@<xWf)
(1) BHm`hN>\ &")L%> QJxWU2.39*)0-96+591i&(2) +47/9#xWQJxWU2.39*)0-96+591i&(3) QJxWU)# zÒ = 0&sy)G't')C%xWQJ p0Q)xW& (4) # z$~HmQJ p )x&  5 Ò =180xW& HmQJSK)rdvZ  4.    ''X@<hbgJEj)p!#4 (%nX)= 481 #c$',9*)@<bk|  2 )Ve &(1) +47/9xW2.39* ] Áh #%]Q)p!&uBY` Úw uBw`ow
M AW  3 )Dp!#

P − p0 = ρw gΔh14(2) &-0*1YEgi,.)1$Jm15n#f\oYEg<AeI#U pS3FI Úa S3[LP`Jm16n#4U mJm16n5oDSAXI18C?#^ npP − p0 =1
ρa U 22m15n
m16n(3) YE7GBZmke%/QYE7nH#>oM:7#U p 1gmf =9.8110-3 N j6#\o=2Nacl393;" M:7#U p(4) @ 4 ^o<AM:7j6#+/'( pR5

#] o8Jm6n#\M:6O#K p

b 2 _hVK!M:7d







d

HA

<AeI

YE7BZH

[gmf]

[gmf]

hP

hp0

P - p0

1/2 ÚU U[mm]

[mm]

[Pa]

[Pa]

[m/s]

117

943313498

42.52

b 3 W3FIm1atm 

M:
DI
[N]

TFIn(2)

 XI
FI
FI
FI
FI
FI
XI
XI
XI
XI
 T Úwg/cm3 T Úwg/cm3 T Úwg/cm3 T Úwg/cm3 T Úwg/cm3
00.9998470.99990140.99924
21
0.9979928
0.99623
1
0.9999080.99985150.99910220.99777
29
0.99594
2
0.9999490.99978
16
0.9989423
0.9975430
0.99565
30.99996100.99970
170.99877
24
0.99730
310.99534

40.99997
110.99961
180.99860
250.99704
320.99503
50.99996
120.99949
190.99841
260.99678
330.99470

60.99994
130.99938
20
0.99820270.99651
340.99437























M 3 _GAHNw@

492 





uz!["%-:*'~<;Zaj~s 4 'Q^ $(1) EdsyNGxN304:*vU Ál 'g~Ál T\Ol{ !#UN'g$  ~304:*BbtW' 30$

p0 − p = ρw gΔl sin θ|17}(2) NG@`Rq~X|7}!#NG@`'g$~0PK~UNHN o $NG@` 1.0 $(3) Le~j]h=PKNG@`'g$j]h=NG@`X|8}Rq %$
(4) Szpc!j]h=PK~ifCNG$NG@`'tWw`27+.!
E(61 Le(61'>^$|>M?'M 4 m}
M 5 'IrSzpcPK Cpcos(5) Szpc!j]h=PK~NG@` Cp  cosÒ 'g$Ò ' Ò w`27+.! "~X|10}Z_G@`'g$`AnF

/5:.89):,DX|JYDX}'k%!

s4Ed&#NGFVtWv

xNU

Ol{ UN

Òlp

Ál

Álsin'

pp0

[ °]

[mm]

[mm]

[mm]

[Pa]

Cp
j]h=
CpcosÒ


CpcosÒj]h=


0

1.000

1.000

5

0.970

0.966

100.879

0.866

15

0.732

0.707

20

0.532

0.500

180



Cp

U



1.5



1.0



0.5

0
-2.0
-1.0
Cp



0.0


Cp


-0.5
-1.0

1.0
1.0



-1.5



2.0
2.0

-2.0






0.0
0.0

-2.5

実験結果

-3.0

理想流体

-3.5
020

406080

100120140160

180

Ò

180


' 4 #/30"(%$+>(%!-$+'@&B#?


2.0




1.5




1.0

CpcosÒ

0.50.0

実験結果



-0.5



-1.0



020

4060



80

100

120

140

160

180

Ò
' 5 #/ CpÒ5.    <  )=4.  5* A
51  )=52 



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Ud
ρU d=μν T + C  T 2/30μ = μ0
T +CT0Re =Á15ÂÁ16ÂÃjf 0¬v Ö0 = 1.7210-5 [PaÅs]ÃT0  273.15 [K]ÃC /0@D8n¥ha C =117  (Ä Àf ½'Ã¬vfXQl|²(Ä Ico¿«dÃW *'x)(issis Ã#His ·¶%Ä#¢Ä
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