!"#$%&'()*+,-./012)3456789:;<=1>?6%9-@A'BC2DE2 FGŒ»#ÏÐ)A•ÑŠ%ÒÓÔÐNÕT-.JKRd!"#$Ö×8M 0.2 Ø%žŸ!"#$%&'()*%+,-.)/0(123¡¢£¤!"NA•R<.b45(6789:%;<#=67>?@A-.BCD

V6ÙmnÚÛ] 1.5mÜ1.5mdV6ÙÝy] 3mdV

CEFCGHI?H/.JKL)*%+,8MNOP

6ÙÞn%"*ßàÙ] 2m Rk.b:á%Œ»(›Q,-.JKR45(ST-.BCDCEFCGHI"‚]ÇÈÉRk.%RdÇâÙ%ãäKån(ÒÓ1)2)]^_`3N‡Š`3d!"æç%ÒÓèéKêëìízî.J<ab`c`dJ/\%efRT232.gIhi]

K(Œ•3dÒÓNéï`apðR%ÇâÙ%&'#1 jRklhi%mnop?+,`a0qL)*%+…>ñò%óôN•» 2)bhi(ST-.õ>Kö>,8MNOPQ,-.ar(st#)/uv%hiw

NÐ¤÷ø>ãùRd">%V6‹Š(1¦."‚„xyz?+,`a0q%BCDCEFCGHI%{|%"*Núû"*üKýþÿ"*üN!T`3üV`%@HNUVR<.KWXY

LZ[\3)]!"A•8%"ab±"*üK÷ø>ãù%"#] 1000Hz Rì8(‚"ƒ„(];<#…>†‡?Aˆ.arhi%‰Šª$¡Æ`ab%aúû"*ü(]ÒÓæç&C'C‹Š(Œ•3hixn"…>Ž•%•‘’?“#.J(Œ. 8Hz %(ø)«¬?*\/a%R 6Hz %+C,KN”•`31ld)/uv%yz(Œ•3hi(SžÄ-Æ'CNT23./ÿ£0%•1N2T-.">–—]+,-.K˜™\/.bš834ÿoN}~`abš ›œ•R]džŸ

%*%$ -.()#}~]•€/32#2bZ[\¡¢£¤!"N¥¦.§¨4(G`aST-.">–—%mnop(Œ.+,N©\c(-š ef(]dÍ 2 (Î-Œ»# 2 W5%-®¯hi(×.ar(dmnª«¬%“#.-®¯hiK°o¯h6Ky6%7 1:2d.z 500mm)K 13 W5%°o¯hiNT23!""‚efN•2d±²%hi(1¦.

i8.z 500mm9N:f5K`3;T`abmnª«¬%³2(Œ.BCDCEFCGHINef¤(}´-.KKµ(dOPQ¶·:?l8M%¸6Wind<=PUab$ MNNO`\![\Wind1PQR
J1K
STUV XUYW ZL
L MNNOW MNNO[\!
[\]\!*^_\%[\\*]`]\!%\%[\\*^_\_\!
!%\!*^]\\*^_\\*]`!%\!%\!
!_\!*^!_\!%\\*]`(T2.hi%wxyz d %¹lu(j23˜ºN•»b%"&'()$%*!$ &'+,()$
š ef]¼½;¾;¾¿ÀMÁÂ¾œ•¿%ÃÄÅÆiÇÈÉ"‚NT23••ab"‚mn„R%V6
ÊË%‡ŠpÌNÍ 1 (Î-b›"‚]dÍ 1 (Î-B 2$ C'D()EFGHI$
H 1 @AIJKLM2/012

U t (m/s)

3456789t r (sec):;! (deg)

B 1$ 1c&'d,B$
20-1

2.0 , 3.5 , 5.0 , 7.0
0.2 , 0.3 , 0.4 , 0.6
0.8 , 1.0 , 1.4<=>?45@A>?0 , 90

$#&5

"34"5#**
346#**#!"!#&'##&' " "&'()*+,-+./

$

#&$
#

!#&$
!#&'

$&'

34"5#**
346#**##&'" "&'()*+,-+./$$&'

34"5#**
346#**#&7;9,:/#&789,:/

01,*2-/%#&5#&$
#!#&$
!#&'

##&'
" "&'
()*+,-+./

$

$&'

%*^

e*^
e
‰qrs

„qrs

e

…u†„qrs‡ˆ„qrs%!*^!
\*^%*^%!*^…u†‰qrs‡ˆ‰qrs!
\*^\\bƒ`\NN bƒ![\NNtuvuwxuyrsŠ‰q‹e*^tuvuwxuyrsŠ„q‹

B 3 <=>PnopAMUt =2.0m/s•tr = 0.2sec•:; 45‚O$`]^[e%!
\bƒ`\NNbƒ`\NN bƒ![\NN`]^[e%!
\bƒ![\NNbƒ`\NN

bƒ![\NNB 4 <=>P1qrs$

B 5 <=>Ptuvuwxuyrs$</=/%>?]-®¯hiR]DÆª>d40mmÜ67pðR%">b£%fgŽN67">b£K`d40mm %@AB¯hiR]CÆDd<%E%°o¯h

BCDCEFCGHI?*\/aXCY8R%Ö;Ž

i]DÆª>%a]FGCHNT2ab›^R]-®

%">b£NXCY">b£K`abÍ 4 (123;¯%IBN 45J°o¯%IBN 0JK 90J(K6`3R%-®¯R67õ>b£K67ö>b£Kµ(\]efN••abef+£NO"8c\%¶·:?l"ìˆŽ(#•32.bhuRXCY">b£N*.K*L9òdJ/NMN"* UtOKMN"*%¶·:?

mnª«¬%;<2 d=140mm %-®¯R]XCYõ

l(t-.8ML9òdJ/N¶·:?l8M trOK>b£?ij`dXCYö>b£?kl`32.b`dMN"*] 2.0m/s c\ 7.0m/s Rd¶·:?l8M

e*e$ tuvuwxuyrs$] 0.2 Øc\ 1.4 ØRefN••ab</=/%efš Í 5 ]XCYŽK67Ž%7L9òdJ/NBCD,PQC'%ŽNx 1 (Î-bCEFCGb£K-.ONx`aµ%Rk.bÍ 5 (e"FGfgh6ijk<=>-.P&'lm$

123hi%mnª«¬?Rz2 d=70mm %-®¯%e*!$ nopA$u?õ>%BCDCEFCGb£];<a#ldš Í 3 ]IB 45JR‰Š`a;R%-®¯hiNT2d=140mm %-®¯%u?ö>%BCDCEFCGb

aefRMN"*? 2.0m/sd¶·:?l8M? 0.2 Ø£];<#ŽNK•ab%"*Kõ>STö>%V6ÿoRk.bUV%œ•e*[$ z{|3456789}~k•€$2)

KìWd;R%-®¯Kµ(õ>Kö>R"*%¶š OPQ¶·:?l8MKhi(ST-.XCY">·:?lKì8(67Ž9:%XCYŽ?H/.BCb£ST">%BCDCEFCGb£K%¢bNßm

DCEFCGHI?Z[R<.b%ad</=/%e.b#1dOPQ¶·:?l8M tr’](1)ÉR6e-.bf(1¦."*%¶·:?lu]\]^`2%(g`dõ>ÿoN_.K d=140mm %-®¯%õ>R] 0.3 Øt r# "U t ! trd(1)M( 2 ’XCY?@A`32.bö>R] d=70mm %JJ(dUtnMN"*dtrn¶·:?l8Mddn:f-®¯ef%XCY@A8MŒlµ d=140mm (1¦5%wxyz(-®%y6)K-.b.ef%u?XCY@A8M?`a#•32.bš

š OPQ¶·:?l8MK<%8%XCY">b£K

e*%$ 1qrs$%¢bNÍ 6 (dOPQ¶·:?l8MKBCDCEš Í 4 (MN"*? 2.0m/sd¶·:?l8M? 0.2 ØFCGb£K%¢bNÍ 7 (</=/Î-bÍ 6 KÍ(1¦.;R%-®¯%">b£NÎ-bac`dõ

7 (123±õ>%b£Kµo2poRx`aq(MN>b£Kö>b£]</=/õ>Kö>N67"*%"* 2.0m/sdOPQ¶·:?l8M?r 5.5 %R-®

*’…Khi%¥"ndNT236e`32.b%a¯hief)?s/32.µ%%dOPQ¶·:?l820-2

\*!

!

\*!
!
!\!\\z{|3456789!
!\!\\z{|3456789bƒ`\NN
bƒ![\NN!\!
!

$#&5

"

5#**<5#**=#**<=#**"$#**<"$#**

#!"
!#&'

##&'
" "&'
()*+,-+./$89,:/

01,*2-/#&7!
!

!\!\\z{|3456789

B 7 <=>Pz{|3456789E
tuvuwxuyrs$
5#**<5#**=#**<=#**"$#**<"$#**###&' " "&'()*+,-+./$

5#**<5#**=#**<=#**"$#**<"$#**#&7#&$!#&$!#&'$&'

bƒ`\NNbƒ![\NN!\!\!\\z{|3456789

B 6 <=>Pz{|3456789E…u†1qrs$%

tuvuwxuyrsŠ‰q‹!

bƒ`\NNbƒ![\NN#&5;9>,:/…u†‰qrs…u†„qrs!\tuvuwxuyrsŠ„q‹bƒ`\NN
bƒ![\NN!\#&$#!#&$!#&'$&'##&' " "&'()*+,-+./$$&'%tv]ö>%±b£RŒluax/32.b["FGfgh6ijk$Œ•;>-.P&'lm$

e*^e%*^%!*^!
\*^\…u†„qrs‡ˆ„qrs[\Ž[\[*!$ nopA$_\Ž_\!%\Ž!%\B 9 Œ•;>P„qrs$

š Í 8 ]IB 0°R‰Š`!\a 3 W5%mnª«¬NMN"*? 2.0m/sd¶·:?l8M? 0.2 Ø%"*Kõ>STö>%V6_\NNŽ_\NN!%\NNŽ!%\NN…u†„qrs

vj@AB¯hiefR[\NNŽ[\NNÿoRk.bÞw%-®
¯efKìWdõ>R]
BCDCEFCGHI?
Z[R<.bö>R]M¶•aBCDCEFCG!

e*^e%*^%!*^!
\*^\[\Ž[\_\Ž_\!%\Ž!%\B 10$ Œ•;>Ptuvuwxuyrs
M„qO$[\NNŽ[\NN!\tuvuwxuyrsM„qO?Rza#•32.bJ„qrs

M?;<a#.K±b£

tuvuwxuyrsM„qO

B 8 Œ•;>PnopAMUt =2.0m/s•tr = 0.2sec•:; 0‚O$_\NNŽ_\NN!%\NNŽ!%\NN!
!\!\\!
!\!\\z{|3456789
z{|3456789B 11 Œ•;>Pz{|3456789E B 12 Œ•;>Pz{|3456789E
tuvuwxuyrsM„qO$…u†„qrs$!

HI]Z[R<x67pðRµ\]y+%ŽNK•abhz`32.bhuRXCYõ>b£]mnª«¬?

J/]"%)/uv(@g`apðRhi?‰Šz/;<a#.\$kl`32.b

32.arRk.b%ad±@AB¯Kµõ>%XC[*e$ tuvuwxuyrs$

Y%@A8M]"*%¶·:?. 0.2 Ø%MRk.bš Í 10 ]±@AB¯(1¦.õ>%BCDCEFC[*%$ 1qrs$Gb£NÎ`aµ%Rk.bhi%mnª«¬?;<

š Í 9 ]MN"*? 2.0m/sd¶·:?l8M? 0.2 Ø2u?õ>%BCDCEFCGb£];<#ŽNK•(1¦.±@AB¯%õ>b£Rk.bJJRö>b32.b£(j23]Í 8 Œlö>%Ž?\]y+Rk.KZ[*[$ z{|3456789}~k•€$[R<.%R}~c\]x`abÍ 9 (123hi%

š Í 11 KÍ 12 (OPQ¶·:?l8MKXCYõ>mnª«¬?;<a#.\$67õ>b£]ij`3b£STõ>%BCDCEFCGb£K%¢bN</

2.bJ%67õ>b£%+,]UV%œ•4)=/Î-b@AB¯hiRµOPQ¶·:?l8M?

KŒa20-3!
!

!\[\NNŽ_\NN_\NNŽ_\NN!%\NNŽ_\NN!

!\!\\z{|3456789(a) d =QRSTPUV B!

tuvuwxuyrsŠ„q‹_\NNŽ[\NN_\NNŽ_\NN_\NNŽ!%\NN

tuvuwxuyrsŠ„q‹tuvuwxuyrsŠ„q‹

!\!\!
!

!\!\\z{|3456789(b) d =J1K D!\!\\z{|3456789[\NNŽ]\NN[\NNŽ_\NN_\NNŽ!%\NN[\NNŽ[\NN!%\NNŽ!%\NN!%\NNŽ]\NN!_\NNŽ!%\NN

B 13 ••UV d Pijkz{|3456789E$tuvuwxuyrs$]\NNŽ[\NN_\NNŽ[\NN!%\NNŽ_\NN_\NNŽ_\NN]\NNŽ!%\NN!%\NNŽ!_\NN;<a#.\$±õ>%b£?Rza#•31lh6.-®¯%{¢]_\/.?d-®¯hiNT2aefK7mK°o¯.K–( 40mmÜ40mm %|}]~\j232.b

NT23[*^$ ••UV6ijkz{|3456789P•€!""‚(Œ.ef¤}´N••a|}d9ò%ƒ*š Í 13 (wxyz d %“#.OPQ¶·:?l8MK

N‚ab

BCDCEFCGb£%¢bNÎ-bx 1 (Î-mnL„Oš :f5%mnª«¬?+,`a0qRµUV

ÚÛ%»·d(a):f5%¥"n%• D N 80mm (K6%œ• 1) ,2)KìW(-®¯K°o¯(123`d"%)/uvyz B N+,zîd<%K<%wx

BCDCEFCGHINZ[`abyzN"%)/uvyz B (`a0qK(b))/uv

L…Oš :f5%mnª«¬?+,`a0qRµBCyz B N 80mm (K6`d¥"n%• D N+,zîd

DCEFCG@A8%Ö;">b£%XCY<%K<%wxyzN¥"n%• D (`a0q%7€">b£STBCDCEFCGb£]OPQ

N••32.b%ad±q]MN"* Ut N¶·:?l¶·:?l8MRà†-.JK?‡ˆRk.b8M 0.2 ØR¶·:•aK<%BCDCEFCGb£N¡+

B 14 @A>Pz{|3456789E$
tuvuwxuyrsMd =$BOL‰Oš °o¯NT2aef(123OPQ¶·:?
l8M%¸6(T2.hi%wxyz d ]dG`aµ%Rk.bš Í 13 %(a)R]OPQ¶·:?l8M%klKKµ¥"•%ŽNK.Œlµ")/uv%ŽNT

(õ>%BCDCEFCGb£?ij-.JK?€c

2.u?BCDCEFCGb£K%{¢?.

.bÍ 13 %(b)Rµ(a)KìW(dOPQ¶·:?l8a#.JKNÎ`ab

M%klKKµ(BCDCEFCGb£%ij?*\“”•–$/.?dÍ 13 %(a)K7€`3ij-.t<?Rzad1) S.Taneda : The Development of the Lift of an Impulsively{¢µRz2JK?€c.b

Started Elliptic Cylinder at Incidence, Journal of the Physicalš -m3%°o¯(¢`3d:f5%"%)/%uv

Society of Japan, Vol. 33, No. 6, pp.1706-1711, 1972.

yz B Nwxyz d K`aOPQ¶·:?l8MKB2) Šò‹@dÞYŒ•dŽY••d‘„’d“”•–dCDCEFCGb£%¢bNÍ 14 (Î-bÍ 14 N_—˜AdžŸ.Kd-m3%q?\]ìhû:(¡+™ 20 ó"š¾E$›œ•žŸGz/32¡¢£¤!"N¥¦.-®¯%">–—d¡d ISSN 0918-8231d.bŒ•3d¥"n%• D (¢€\x:f5%"%)

pp.325-330d2008.

/uv B Nwxyz d K`3¶·:?l8MNOPQ

3) “”•–dÞYŒ•dŠò‹@d‘„’dŽY••d,-.JKROPQ¶·:?l8MKBCDCEFC—˜Ad¢£¤¥45%=67"…>(S]-!"%¶Gb£(.2{¢?‚\/dBCDCEFCGHI%·:?l8M%•‘d™ 20 ó"š¾E$›œ•žŸ

UVN-.JK?R<.K˜™\/.bISSN 0918-8231dpp.337-342d2008.

^"‘E’$4) Barry J.Vickery : Load fluctuations in turbulent flow, Proc.

š žŸof the ASCE, EM 1, pp.31-46, 1968.

¡¢£¤!"N¥¦.§¨4(ST-.">–—%mnop(Œ.+,(j23mnª«¬%“#20-4¡d