Home
Add Document
Sign In
Create An Account
PIV Measurement of a Flying Table Tennis Ball - Science Direct
Recommend Documents
No documents
PIV Measurement of a Flying Table Tennis Ball - Science Direct
Download PDF
11 downloads
0 Views
385KB Size
Report
Comment
PIV measurements of a flying table tennis ball were conducted to confirm whether a similar phenomenon was observed in real
flight
. A high-
speed
camera with a ...
Available online at www.sciencedirect.com
ScienceDirect Procedia Engineering 147 (2016) 104 – 109
WKFRQIHUHQFHRIWKH,QWHUQDWLRQDO6SRUWV(QJLQHHULQJ$VVRFLDWLRQ,6($
3,90HDVXUHPHQWRID)O\LQJ7DEOH7HQQLV%DOO
@0XOWLSOHVWXGLHVKDYHEHHQFRQGXFWHGWRLGHQWLI\WKHGRPDLQZKHUHWKHQHJDWLYH0DJQXVIRUFHRFFXUVDQGWRUHYHDO LWVDVVRFLDWHGSKHQRPHQD>@)LJXUHVKRZVVXFKDGRPDLQLQWKHSODQHRIWKH5H\QROGVQXPEHU5HDQGWKH6SLQSDUDPHWHU 63ZKLFKLVGHILQHGDVWKHUDWLRRIWKHSHULSKHUDOYHORFLW\DQGWKHIUHHVWUHDPYHORFLW\7KH5H\QROGVQXPEHULVGHILQHGE\WKH GLDPHWHURIWKHVSKHUHDQGWKHIUHHVWUHDPYHORFLW\2XUSUHYLRXVVWXG\>@DQGDSUHGLFWLRQE\.LPHWDO>@QHDUO\ FRLQFLGHG ZLWK 7DQHGD¶V UHVXOW >@ DW D FULWLFDO 5H\QROGV QXPEHU RI DSSUR[LPDWHO\ î 7KLV GRPDLQ FRQWDLQV WKH FRQGLWLRQV RI D VPDVKZKLFK5H\QROGVQXPEHULVDURXQGîWRîDQGVSLQSDUDPHWHULVDURXQGWRLQDWDEOHWHQQLVJDPH >@0XWRHWDO>@FRQGXFWHGODUJHHGG\VLPXODWLRQVDWKLJK5H\QROGVQXPEHU î DQGVKRZHGWKDWWKHQHJDWLYH0DJQXV IRUFHZDVUHODWHGWRWKHERXQGDU\OD\HUWUDQVLWLRQRQERWKVLGHVRIWKHURWDWLQJVSKHUH7KLVZDVDOVRVXJJHVWHGE\.LPHWDO>@ IURP 3,9 PHDVXUHPHQWV +RZHYHU IRUFH HVWLPDWLRQV IURP WKH WUDMHFWRU\ RI WKH EDOO LQGLFDWHG WKDW WKH QHJDWLYH 0DJQXV IRUFH GRPDLQ VKLIWV WRZDUG KLJKHU 5H\QROGV QXPEHUV RI DSSUR[LPDWHO\ î RU PRUH > @ 7KLV GLIIHUHQFH LV VR ODUJH WKDW LW FDQQRW EH H[SODLQHG E\ WKH DFFXUDF\ RI WKH IOLJKW WHVWV DORQH 1R VWXG\ KDV HYHU DWWHPSWHG WR GHWHUPLQH WKH RULJLQ RI WKHVH GLIIHUHQFHV$VDILUVWVWHSZHFRQGXFWHGDWLPHUHVROYHG3,9PHDVXUHPHQWRIDIO\LQJWDEOHWHQQLVEDOOWRFRPSDUHWKHIORZILHOG EHWZHHQWKHZLQGWXQQHODQGIOLJKWWHVWV
&RUUHVSRQGLQJDXWKRU7HOID[ (PDLODGGUHVVNRQLVKL#HGJHLIVWRKRNXDFMS
1877-7058 © 2016 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license
(http://creativecommons.org/licenses/by-nc-nd/4.0/). Peer-review under responsibility of the organizing committee of ISEA 2016
doi:10.1016/j.proeng.2016.06.197
Yasufumi Konishi et al. / Procedia Engineering 147 (2016) 104 – 109
1RPHQFODWXUH 5H 5H\QROGVQXPEHU 63 VSLQSDUDPHWHU 8 YHORFLW\RIWKHEDOO XYHORFLW\FRPSRQHQWRIWUDYHOLQJGLUHFWLRQ G GLDPHWHURIWKHEDOO 9 SHULSKHUDOYHORFLW\ U UDGLXVRIWKHEDOO Q YLVFRVLW\RIWKHDLU Z DQJXODUYHORFLW\
63
.RQLVKLHWDO>@ .LPHWDO>@ 7DQHGD>@ 7DNDPL 0L\D]DNL>@
5H
u
)LJ5HJLRQRIWKHQHJDWLYH0DJQXVIRUFHLQWKH5H±63SODQH
([SHULPHQWDO6HWXSDQG3URFHGXUH )LJXUHLOOXVWUDWHVWKHVHWXSRIWKH3,9PHDVXUHPHQWV,QWKHIOLJKWWHVWWKHVXUURXQGLQJDWPRVSKHUHVKRXOGEHFDOP%HFDXVH
)LJ6NHWFKRIWKHH[SHULPHQWDOVHWXSGLPHQVLRQVLQPP
105
106
Yasufumi Konishi et al. / Procedia Engineering 147 (2016) 104 – 109
WKHZHLJKWRIWKHH[SHULPHQWDOWDEOHWHQQLVEDOOLVRQO\JWKHDLUIORZLQWKHVXUURXQGLQJDWPRVSKHUHKDYHDODUJHHIIHFWRQWKH PHDVXUHPHQWV7KHIOLJKWSDWKZDVZLWKLQDODUJHFORVHGFDUJRPDGHRIDQDFU\OLFSODWHDQGDKDUGERDUGZLWKDOHQJWKRIP KHLJKWRIPDQGZLGWKRIP7KLVVHWXSKHOSHGXVPDLQWDLQWKHVXUURXQGLQJDWPRVSKHUHWREHFDOPDQGDFRQVWDQWGHQVLW\ RISDUWLFOHVIRUWKH3,9PHDVXUHPHQW 7KHEDOOWKDWZHXVHGLVFDOOHGD³ODUJHEDOO´DQGKDVDGLDPHWHURIPPZKLFKLVVRPHZKDWODUJHUWKDQWKHQDWLRQDORIILFLDO VWDQGDUGRIPPWKHEDOO¶VPDVVZDVJZKLFKLVVRPHZKDWOLJKWHUWKDQWKHQDWLRQDORIILFLDOVWDQGDUGRIJ7KLVW\SHRI EDOOLVW\SLFDOO\XVHGE\EHJLQQHUVRUVHQLRUVIRUUHFUHDWLRQDOXVHDQGKDVEHFRPHFRPPRQLQ-DSDQDQG$VLD3DFLILF([FHSWIRU LWVVL]HDQGPDVVLWLVPDGHXVLQJWKHVDPHSURFHVVHVDQGSUHFLVLRQDVDQRIILFLDOEDOO7RDYRLGKDODWLRQRIWKHEDOOWKHEDOOZDV VSOD\HGZLWKDUHGIOXRUHVFHQWSDLQWDQGWKHOHWWHU³$´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
×
Report "PIV Measurement of a Flying Table Tennis Ball - Science Direct"
Your name
Email
Reason
-Select Reason-
Pornographic
Defamatory
Illegal/Unlawful
Spam
Other Terms Of Service Violation
File a copyright complaint
Description
×
Sign In
Email
Password
Remember me
Forgot password?
Sign In
Our partners will collect data and use cookies for ad personalization and measurement.
Learn how we and our ad partner Google, collect and use data
.
Agree & close