᭱᪂ィ  ឤᅽሬᩱ㸦 PSP 㸧

᭱᪂ィ  ឤᅽሬᩱ㸦 PSP 㸧

ட⏣ ṇ἞

Recent Progress in Pressure-sensitive Paint Measurements

Masaharu K

㸯㸬ࡣࡌࡵ࡟

ឤᅽሬᩱ㸦Pressure Sensitive Paint, PSP㸧ࡣ㸪Ⓨග

≉ᛶ࠿ࡽᅽຊ್ࢆ ࡿࡓࡵࡢᶵ⬟ᛶศᏊࢭࣥࢧࡢ୍✀࡛

࠶ࡿ㸬㐺ᙜ࡞↷᫂⿦⨨࣭᧜ᙳ⿦⨨ࢆ⏝࠸ࢀࡤ㸪PSPࢆሬ ᕸࡋࡓ≀య⾲㠃඲యࡢᅽຊศᕸࢆ㸪┤᥋㸪⏬ീ᝟ሗ࡜ࡋ

࡚ᚓࡽࢀࡿ㸬ࡋࡓࡀࡗ࡚㸪ᚑ᮶ࡢከⅬィ ࡜ࡣẚ㍑࡟࡞

ࡽ࡞࠸㧗✵㛫ศゎ⬟ィ ࢆ㠀᥋ゐ࡛⾜࠺ࡇ࡜ࡀྍ⬟࡛࠶

ࡿ㸬ࡑࡢ௚࡟ࡶ㸪พฝ㠃㸪ⷧ࠸≀య⾲㠃࡟ࡶ㐺⏝࡛ࡁࡿ

࡞࡝㸪ࡉࡲࡊࡲ࡞ྍ⬟ᛶࢆ⛎ࡵ࡚࠸ࡿ㸬

ᮏ✏࡛ࡣ㸪᭱㏆10ᖺ࡯࡝ࡢ◊✲ᡂᯝ࡟ᇶ࡙࠸࡚㸪PSP ィ ࡢ⌧≧㸪≉࡟㸪PSP ࡟ࡼࡿᚤᑠᅽຊィ 㸪࠾ࡼࡧ㸪 㠀ᐃᖖᅽຊィ ࡢ≧ἣࢆ୰ᚰ࡟ㄝ᫂ࢆ⾜࠺㸬PSPࡣ⤯ᑐ ᅽࢭࣥࢧ࡛࠶ࡾ㸪 ᐃࣞࣥࢪࡣ┿✵࠿ࡽᩘẼᅽࡲ࡛࡟ࢃ

ࡓࡿ㸬ࡑࡢࡓࡵ㸪ప㏿㢼Ὕヨ㦂࡛ᚲせ࡜ࡉࢀࡿࡼ࠺࡞኱

Ẽᅽ㏆ഐࡢᚤᑠ࡞ᅽຊኚ໬ࢆ࡜ࡽ࠼ࡿ࡟ࡣ㸪ᵝࠎ࡞ᕤኵ ࡀᚲせ࡛࠶ࡿ㸬࡞࠾㸪᭩⡠^1),2)㸪ゎㄝグ஦3),4),5),6)ࡀฟࡉ

ࢀ࡚࠸ࡿࡢ࡛㸪ᮏ✏࡜࠶ࢃࡏ࡚ཧ↷ࡉࢀࡓ࠸㸬 㸰㸬PSPィ ࡢᇶ♏

ཎ⌮

ឤᅽሬᩱࡣ㸪࠸ࢃࡺࡿࠕ⺯ගࠖ㸦ṇࡋࡃࡣ࣑ࣝࢿࢵࢭࣥ

ࢫ㸧ሬᩱࡢ୍✀࡛࠶ࡿ㸬Ⰽ⣲ࡀⓎࡍࡿ࣑ࣝࢿࢵࢭࣥࢫࡢ

≉ᛶࡀ㸪Ẽయᅽຊ㸦ṇ☜࡟ࡣ㸪㓟⣲⃰ᗘ㸧ࡸ ᗘ࡟ࡼࡗ

࡚ኚ໬ࡍࡿࡇ࡜ࢆ฼⏝ࡋ࡚ィ ࢆ⾜࠺㸬

ィ ࡢ࢖࣓࣮ࢪࢆᅗ1࡟♧ࡍ㸬≀య⾲㠃࡟ሬᕸࡋࡓⰍ

⣲࡟ບ㉳ගࢆ↷ᑕࡋ㸪ࡑࡢ㝿⏕ࡌࡿ࣑ࣝࢿࢵࢭࣥࢫࢆ࢝

࣓ࣛ࡞࡝࡛࡜ࡽ࠼ࡿ㸬Ⓨගᙉᗘࡸࡑࡢ᫬㛫ኚ໬ࢆゎᯒࡍ

ࡿࡇ࡜࡟ࡼࡗ࡚㸪ᅽຊࡀᚓࡽࢀࡿ㸬

PSP࡛ࡣ㸪㓟⣲⃰ᗘࢆ㏻ࡌ࡚✵Ẽᅽࢆ ᐃࡋ࡚࠸ࡿ㸬

࣮࣊ࣥࣜࡢἲ๎࡟ࡼࢀࡤ㸪ሬᩱ୰ࡢ㓟⣲⃰ᗘࡣ㸪Ẽయ୰

ࡢ㓟⣲ศᅽ࡟ẚ౛ࡍࡿ㸬✵Ẽࡢሙྜ㸪⤌ᡂࡀኚࢃࡽ࡞࠸

ࡢ࡛㸪㓟⣲ศᅽࡣ✵Ẽᅽ࡟ẚ౛ࡍࡿ㸬ࡼࡗ࡚㸪㓟⣲⃰ᗘ

࡜✵Ẽᅽ࡜ࡢ㛫࡟ࡣ⥺ᙧ㛵ಀࡀ࡞ࡾࡓࡘ㸬

Ⓨ ග ≉ ᛶ ࠿ ࡽ ᅽ ຊ ࢆ ᚓ ࡿ ࡓ ࡵ ࡢ ᪉ ἲ ࡣ 㸪ࠕ ᙉ ᗘ ἲ

㸦intensity-based method㸧ࠖ࡜ࠕᑑ࿨ἲ㸦lifetime method㸧ࠖ

࡟኱ูࡉࢀࡿ㸬ᗈࡃ⏝࠸ࡽࢀ࡚࠸ࡿࡢࡣᙉᗘἲ࡛࠶ࡿ㸬 ᙉᗘἲ࡛ࡣ㸪࠶ࡿᇶ‽≧ែp = pref, T = Tref࡟࠾ࡅࡿⓎ

ගᙉᗘࢆIref = I(pref, Tref)࡜ࡍࡿ࡜㸪௵ពࡢᅽຊp,  ᗘT

࡟࠾ࡅࡿⓎගᙉᗘIࡣ㸪ḟࡢ㛵ಀᘧ(1)ࢆ‶㊊ࡍࡿࡇ࡜࠿

ࡽᅽຊࢆồࡵࡿ㸬

ref ref

p T p B T I A

I ⁽¹⁾

ࡍ࡞ࢃࡕ㸪Ⓨගᙉᗘẚࡢ㏫ᩘIref/I ࡣ㸪ᅽຊẚp/pref࡟ẚ

౛ࡍࡿ㸬ᘧ(1)ࡣStern-Volmerᘧ࡜࿧ࡤࢀࡿ㸬ࡲࡓ㸪A, B

ࢆStern-Volmerᐃᩘ࡜࿧ࡪ㸬ᐃᩘࡣ㸪Ⰽ⣲ࡢⓎග࣭⇕ⓗ

ኻά࣭㓟⣲ᾘගࡢ㏿ᗘ࡟౫Ꮡࡍࡿ㸬⇕ⓗኻάࡸ㓟⣲ᾘග

࡟ᐤ୚ࡍࡿሬᩱෆ࡬ࡢ㓟⣲ศᏊࡢᾐ㏱ᛶ࡟ ᗘ౫Ꮡᛶࡀ

࠶ࡿࡇ࡜࠿ࡽ㸪A, Bࡣ ᗘࡢ㛵ᩘ࡜࡞ࡿ㸬

ᐇ㝿ࡢPSP࡛ࡣ㸪ሬᩱෆࡢ୙⣧≀ࡢᏑᅾࡸⰍ⣲ศᏊࡢ 㠀୍ᵝศᕸ࡞࡝ࡢ୙ᆒ୍ᛶࡀᾘග≉ᛶ࡟ᙳ㡪ࢆ୚࠼ࡿࡓ

ࡵ㸪ⓎගᙉᗘẚIref/I࡜ᅽຊẚp/pref࡜ࡢ㛵ಀࡣ㠀⥺ᙧ࡟

࡞ࡿࡇ࡜ࡀከ࠸^1),3)㸬ࡑࡢࡓࡵ㸪PSP࡟ࡼࡿᐇ⏝ヨ㦂࡛ࡣ㸪 ୧⪅ࡢ㛵ಀࢆከ㡯ᘧ࡛㏆ఝࡍࡿࡇ࡜ࡀከ࠸㸬

ࢥ࣮ࢸ࢕ࣥࢢ

PSPࡣ㸪ⓎගⰍ⣲࡜ࡑࢀࢆ≀య⾲㠃࡟ᅛ╔ࡉࡏࡿࡓࡵ

ࡢࣂ࢖ࣥࢲ࠿ࡽ࡞ࡿ㸬Ⰽ⣲ࡣ᭷ᶵ໬ྜ≀࡛࠶ࡿ㸬ࣂ࢖ࣥ

ࢲ࡟ࡣ࣏࣐ࣜࡀከ⏝ࡉࢀࡿࡀ㸪᫬㛫ᛂ⟅ᛶࡸప ࡛ࡢᛂ

High-power Laser Diode Flow

Camera (12-16bit)

Optical Window

PC Shutter

Image Intensifier (optional) High-power

Laser Diode

Model

Wind Tunnel Fig. 1 Schematic diagram of PSP measurement

* ᮾி㎰ᕤ኱Ꮫ ᕤᏛᗓ ᶵᲔࢩࢫࢸ࣒ᕤᏛᑓᨷ (ࠛ184-8581 ᮾி㒔ᑠ㔠஭ᕷ୰⏫2-24-16, E- mail : [email protected])

䛂㢼Ὕᢏ⾡䛾㛤Ⓨ䛸ᛂ⏝䝅䞁䝫䝆䜴䝮䛃ㅮ₇㞟㻔➨䠍ᅇ䡚➨䠐ᅇ㻕 㻝㻝

This document is provided by JAXA.

⟅≉ᛶࢆᨵၿࡍࡿࡓࡵ࡟ࡣ㸪ከᏍ㉁⓶⭷ࢆ⏝࠸ࡿ㸬

⌧ᅾ㸪⡿ᅜࡢ௻ᴗ㸦ISSI♫(⡿)⁷⁾㸧ࡀPSPࢆၟရ࡜ࡋ

࡚౪⤥ࡋ࡚࠸ࡿ㸬ᡭ㡰ࡉ࠼㋃ࡵࡤ㸪ሬᩱࡣ⮬సྍ⬟࡛࠶

ࡾ㸪᭩⡠¹⁾࡟ࡶ࠸ࡃࡘ࠿ࡢࣞࢩࣆࡀᥖ㍕ࡉࢀ࡚࠸ࡿ㸬 Ⰽ⣲

PSP⏝Ⰽ⣲࡜ࡋ࡚Ⰻࡃ⏝࠸ࡽࢀ࡚࠸ࡿࡶࡢ࡟ࡣ㸪ḟࡢ 3✀㢮ࡀ࠶ࡿ㸸

࣭࣏ࣝࣇ࢕ࣜࣥ໬ྜ≀ (PtTFPP ࡞࡝)

࣭ࣝࢸࢽ࣒࢘(II)㘒య (ࣂࢯࣇ࢙ࣥࣝࢸࢽ࣒࢘࡞࡝)

࣭ࣆࣞࣥ࠾ࡼࡧࡑࡢㄏᑟయ (ࣆࣞࣥࣈࢱࣥ㓟࡞࡝)

PtTFPP, ࣂࢯࣇ࢙ࣥࣝࢸࢽ࣒࢘ࡣ㸪ྍどග࡛ບ㉳ࡀྍ

⬟㸪Ⓨග≉ᛶࡢ⤒᫬ኚ໬㸦ගຎ໬㸧ࡀᑡ࡞࠸㸪࡜࠸࠺≉

ᚩࡀ࠶ࡾ㸪࢔࣓ࣜ࢝㸪᪥ᮏ࡛ࡣⰋࡃ⏝࠸ࡽࢀ࡚࠸ࡿ㸬୍

᪉㸪ࣆࣞࣥࡣ኱ኚ᫂ࡿࡃ㸪Ⓨගᙉᗘࡢ ᗘ౫Ꮡᛶࡶᑠࡉ

࠸㸪ࡋ࠿ࡋගຎ໬ࡀⴭࡋ࠸࡜࠸࠺≉ᚩࡀ࠶ࡿ㸬ࢻ࢖ࢶࡢ

⯟✵Ᏹᐂ◊✲ᡤ㸦DLR㸧࡛ࡣ㸪ගຎ໬ࢆᢚ࠼ࡓࣆࣞࣥㄏ ᑟయࢆ⊂⮬࡟㛤Ⓨࡋ㢼Ὕヨ㦂࡟⏝࠸࡚࠸ࡿ⁸⁾㸬

ࣂ࢖ࣥࢲ

㏻ᖖࡢPSPࡢࣂ࢖ࣥࢲࡣ࣏࣐࡛ࣜ࠶ࡾ㸪㐺ᙜ࡞⁐፹ࢆ

⏝࠸࡚⁐ゎࡋ㸪Ⰽ⣲ࢆຍ࠼࡚᧠ᢾࡋࡓࡶࡢࢆ㸪ࢫࣉ࣮ࣞ

࡞࡝ࢆ⏝࠸࡚≀య⾲㠃࡟ሬᕸࡍࡿࡇ࡜ࡀྍ⬟࡛࠶ࡿ㸬 PSP࡟ࡣ㓟⣲㏱㐣ᛶ࡟ඃࢀࡓ࣏࣐ࣜࡀ㐺ࡋ࡚࠾ࡾ㸪ISSI

♫ࡢFIB࡞࡝ࡀၟရ࡜ࡋ࡚㈍኎ࡉࢀ࡚࠸ࡿ㸬

࣏࣐ࣜࣂ࢖ࣥࢲࡢ᫬㛫ᛂ⟅ᛶࡣ㏻ᖖ0.1 s௨ୖ࡛࠶ࡿ

ࡓࡵ㸪㠀ᐃᖖᅽຊィ ࡢࡓࡵ࡟㸪ࡼࡾ㓟⣲㏱㐣ᛶࡢ㧗࠸

㝧ᴟ㓟໬࢔࣑ࣝࢽ࣒࢘⓶⭷(AA-PSP)^9),10)ࡸ㸪ࢩࣜ࢝ࢼࣀ

⢏Ꮚ^11),12)ࢆ⏝࠸ࡿPSPࡢ㛤Ⓨࡀ㐍ࡵࡽࢀ࡚࠸ࡿ㸬࠸ࡎ

ࢀࡶ㸪nm ࣮࢜ࢲࡢ⣽Ꮝࢆ᭷ࡍࡿከᏍ㉁య࡛࠶ࡾ㸪Ⰽ⣲

ࡣ㸪྾╔࡟ࡼࡗ࡚㸪㓟໬࢔࣑ࣝࢽ࣒࢘ࡸࢩࣜ࢝ࢤࣝ⾲㠃

࡟ᅛ╔ࡉࢀࡿ㸬ࡇࢀࡽࡢከᏍ㉁ࣂ࢖ࣥࢲࢆ⏝࠸ࡓPSPࡢ ᛂ⟅≉ᛶ᫬㛫ࡣ10 Ǎs⛬ᗘ࡜࡞ࡿ^10),12)㸬

⏬ീࢹ࣮ࢱฎ⌮㸦ᅽຊ⟬ฟ㸧

ᙉᗘἲ࡟ࡼࡿ PSP ィ ࡟࠾ࡅࡿᇶᮏⓗ࡞ࢹ࣮ࢱฎ

⌮ࡢὶࢀࡣ㸪(1) ⏬ീࣀ࢖ࢬ㸦ࢲ࣮ࢡࣀ࢖ࢬ㸪ࢩࣙࢵࢺ

ࣀ࢖ࢬ㸧㝖ཤ㸪(2) ఩⨨ྜࢃࡏ㸦image registration㸧㸪 (3) Ⓨගᙉᗘẚ⟬ฟ㸪(5) ᅽຊࢹ࣮ࢱ࡬ࡢኚ᥮㸪(5) ≀య

⾲㠃࡬ࡢ࣐ࢵࣆࣥࢢ㸪࡛࠶ࡿ㸬௨ୖࡢᡭἲ࡟ࡘ࠸࡚ࡣ㸪

ᩥ⊩1),3)࡟ヲࡋ࠸グ㍕ࡀ࠶ࡿ㸬

ᙉᗘἲ࡛ࡣ㸪ᘧ(1)࡟♧ࡍ࡜࠾ࡾ㸪 ᐃࡋࡓ࠸ᅽຊ㸪  ᗘࢹ࣮ࢱࢆྵࡴⓎගᙉᗘ⏬ീ㸦Irun㸧࡟ຍ࠼࡚㸪Ⓨගᙉ ᗘẚࢆྲྀࡿࡓࡵࡢᇶ‽⏬ീ㸦Iref㸧ࡀᚲせ࡛࠶ࡿ㸬(2)ࡢ఩

⨨ྜࢃࡏࡣ㸪ᇶ‽⏬ീ࡜ ᐃ⏬ീࡢ఩⨨ࢆṇ☜࡟ྜࢃࡏ

ࡿࡓࡵ࡟ᚲせ࡞ࢫࢸࢵࣉ࡛࠶ࡿ㸬ẚ㸦Irun/Iref㸧ࢆ⏝࠸ࡿ

ࡇ࡜࡛㸪ሬᩱ୰ࡢⰍ⣲⃰ᗘࡸ↷ᑕࡍࡿບ㉳ගᙉᗘࡢ୙ᆒ

୍ᛶࡀ ᐃ࡟୚࠼ࡿᙳ㡪ࢆ᤼㝖࡛ࡁࡿ࡜࠸࠺฼Ⅼࡀ࠶ࡿ㸬 㸱㸬㢼Ὕᐇ㦂࡬ࡢ㐺⏝

ప㏿㢼Ὕᐇ㦂࡟࠾ࡅࡿᐃᖖᅽຊศᕸィ 

ὶ㏿10 m/s⛬ᗘࡢὶື⌧㇟࡟ᑐࡍࡿPSP ᐃࡣ㸪⏘

ᴗ⏺࠿ࡽᙉ࠸せᮃࡀ࠶ࡿ㸬ᚤᕪᅽィ ᡂຌࡢ࢝ࢠࡣ㸪PSP ࡢ ᗘ౫Ꮡᛶࡢ⿵ൾ࡟࠶ࡿ㸬኱Ẽᅽ㏆ഐ࡟࠾ࡅࡿືᅽࡣ㸪 ὶ㏿10 m/s࡛60 Pa⛬ᗘ࡛࠶ࡿ㸬ࡇࢀ࡟ᑐࡋ࡚㸪PSP ࡣ㸪ᅽຊឤᗘ㸦Iref/I_{ࡢኚ໬⋡㸧ࡣ}1%/kPa࡟㏆࠸ࡶࡢࡀ

⏝࠸ࡽࢀ࡚࠸ࡿࡀ㸪 ᗘኚ໬࡟ᑐࡍࡿⓎග㔞ኚ໬ࡶࡲࡓ

⣙0.5-1%/Υ⛬ᗘᏑᅾࡍࡿ^1),7)㸬

 ᗘ⿵ൾࡢ᪉ἲ࡜ࡋ࡚㸪ᑐ⛠ᛶࡀ௬ᐃ࡛ࡁࡿᐇ㦂࡛ࡣ㸪

༙㠃ẖ࡟ឤᅽሬᩱ࡜ឤ ሬᩱ(TSP)ࢆሬࡾศࡅ㸪TSPࡢ ࢹ࣮ࢱ࠿ࡽᚓࡓ ᗘศᕸࢆ౑࠺᪉ἲ¹³⁾ࡀࡼࡃ౑ࢃࢀࡿ㸬

Left: SST model

Middle: Pressure distribution

Right: Comparison with pressure-tap data

S1

Cp

S2

S3

Fig. 2 PSP measurement in low-speed wind tunnel (U = 50 m/s, q = 1.5 kPa, AOA = 12deg)¹⁵⁾

(4) Ᏹᐂ⯟✵◊✲㛤Ⓨᶵᵓ≉ู㈨ᩱ䚷㻶㻭㼄㻭㻙㻿㻼㻙㻝㻡㻙㻜㻞㻝 㻝㻞

This document is provided by JAXA.

ࡼࡾỗ⏝ᛶࡢ㧗࠸㸪ྠ୍ᅽຊィ ఩⨨࡟࠾ࡅࡿ ᗘࢆ

࡜ࡽ࠼ࡿᡭẁ࡜ࡋ࡚ࡣ㸰ࡘࡢ᪉ἲࡀ᳨ウࡉࢀ࡚࠸ࡿ㸬➨

㸯ࡢᡭẁࡣ㸪ሬᩱෆ࡟ ᗘឤᗘࡢࡳ᭷ࡋPSP⏝Ⰽ⣲࡜Ⓨ

ගἼ㛗ࡢ␗࡞ࡿreference⏝Ⰽ⣲ࢆྜࢃࡏ࡚ΰࡐࡿ஧Ⰽ

⣲(bi-luminophore) ሬᩱ^7),14)ࢆ⏝࠸ࡿ᪉ἲ࡛࠶ࡿ㸬ࡇࡢ ᪉ἲ࡛ࡣ㸪2 Ⰽ⣲࠿ࡽࡢⓎගࡢẚࢆ⏝࠸ࡿࡇ࡜࡛㸪PSP

Ⓨග㔞࡟ᑐࡍࡿ ᗘኚ໬ࡢᙳ㡪ࢆ 0.1%/Υ⛬ᗘࡲ࡛ᢚ࠼

ࡿࡇ࡜ࡀ࡛ࡁࡿ㸬

ࡶ࠺୍ࡘࡢᡭẁ࡜ࡋ࡚㸪㉥እ⥺ࢧ࣮ࣔࢢࣛࣇ࢕ࢆ⏝࠸

࡚PSP⾲㠃 ᗘศᕸࢆ ᐃࡋ㸪ࡑࡢࢹ࣮ࢱࢆ⏝࠸࡚PSP ฟຊࡢ ᗘ⿵ൾࢆ⾜࠺᪉ἲࡀ࠶ࡿ㸬ᮏ⠇࡛ࡣ㸪‶ᑿࡽ¹⁵⁾ ࡢ◊✲ᡂᯝࢆ⏝࠸࡚㸪ᐃᖖᚤᕪᅽィ ࡢ⌧≧ࢆ♧ࡍ㸬

‶ᑿࡽࡣ㸪ⓑ㔠࣏ࣝࣇ࢕ࣜࣥ㸦PtTFPP㸧࡜ࣇࢵ⣲⣔

࣏࣐࣮ࣜ㸦Poly-IBM-co-TFEM㸧࠿ࡽ࡞ࡿPSPࢆ⏝࠸࡚㸪 PSPࡢບ㉳㸪Ⓨගࢆ࡜ࡽ࠼ࡿࢩࢫࢸ࣒࡜IR࣓࢝ࣛࡢ⤌

ࡳྜࢃࡏ࡛㸪PSPฟຊࡢ ᗘ⿵ṇࡢຠᯝࢆヲࡋࡃㄪ࡭࡚

࠸ࡿ㸬ᮏPSPࡣ㸪ᅽຊឤᗘ0.75%/kPa࡟ᑐࡋ࡚㸪 ᗘ

ឤᗘࡀ 1.5%/Υ࡜ࡸࡸ኱ࡁ࠸ࡀ㸪 ᗘ࡟ࡼࡿᅽຊឤᗘࡢ

ኚ໬ࡀ࡞࠸㸦ᘧ(1)ࡢA, Bࡀ ᗘ࡟౫Ꮡࡋ࡞࠸㸧ࡓࡵ㸪

㏻㢼᫬࡜↓㢼᫬ࡢ ᗘᕪ㸦TrunTref㸧ࡀࢃ࠿ࢀࡤ ᗘ⿵

ṇࡀྍ⬟㸪࡜࠸࠺฼Ⅼࡀ࠶ࡿ㸬

ᅗ㸰࡟㸪ሬ⿦ࡉࢀࡓ㉸㡢㏿ᶵ㸦SST㸧ᶍᆺࡢᵝᏊ࡜㸪 ᅽຊศᕸ⟬ฟ⤖ᯝ౛ࢆ♧ࡍ㸬ᐇ㦂ࡣ㸪JAXA 2m™2mࡢ ప㏿㢼Ὕࢆ⏝࠸࡚㸪୍ᵝὶ㏿ᗘ50 m/sࡢ᮲௳࡛⾜ࢃࢀ

ࡓ㸬PSPࡢ᧜ᙳࡣ16 bit෭༷CCD࣓࢝ࣛࢆ⏝࠸㸪࠿ࡘ S/Nẚࢆ㧗ࡵࡿࡓࡵ㸪㸯ࢣ࣮ࢫ࡟ࡘࡁ64 ᯛࡢ⏬ീࢆ᧜

ᙳࡋ࡚ᖹᆒ໬ࡋࡓࢹ࣮ࢱࢆ⏝࠸࡚⟬ฟࡉࢀ࡚࠸ࡿ㸬ྑᅗ

࡟♧ࡍ㸪୰ኸᅗS1, S2, S3࡟タ⨨ࡋࡓᅽຊᏍࢹ࣮ࢱ࡜ࡢ ẚ㍑ࢢࣛࣇࢆぢࡿ࡜㸪 ᗘ⿵ṇ࡟ࡼࡾ㸪PSPฟຊࡀᅽຊ Ꮝࢹ࣮ࢱ࡟㏆࡙ࡃࡇ࡜ࡀศ࠿ࡿ㸬ヲࡋ࠸ゎᯒ⤖ᯝ࠿ࡽ㸪

‶ᑿࡽࡣ㸪ᮏィ ࢩࢫࢸ࣒ࡢィ ⢭ᗘࡣ⣙Cp=0.1㸦150 Pa㸧࡜ホ౯ࡋ࡚࠸ࡿ㸬

⌧≧ࡢPSPࢆ⏝࠸࡚10 Pa࣮࢜ࢲࡲ࡛ṇ☜࡞ᅽຊࢆ

ồࡵࡿ࡟ࡣ㸪Ẽὶ ᗘࢆ⢭ᐦ࡟⟶⌮ࡍࡿ࠿㸪⾲㠃 ᗘࢆ

0.01 K࣮࢜ࢲ࡛ィ ࡍࡿᚲせࡀ࠶ࡿ㸬Ẽὶ ᗘࡢ⟶⌮ࡣ

タഛୖࡢไ⣙ࡸࢹ࣮ࢱ⏕⏘ᛶపୗࡢၥ㢟ࡀ⏕ࡌࡿࡇ࡜㸪 IR࣓࢝ࣛ࡟ࡼࡿ⢭ᐦ࡞ ᗘィ ࡛ࡶ⣙0.1 K⛬ᗘࡢㄗᕪ ࡣṧࡿࡇ࡜࠿ࡽ㸪ᐃᖖᅽຊ⤯ᑐ್ࡢሙྜ㸪100 Pa⛬ᗘࡢ ㄗᕪࡣ㑊ࡅࡽࢀ࡞࠸㸬ࡋࡓࡀࡗ࡚㸪⌧≧ࡢPSPィ ࡀಙ 㢗࡛ࡁࡿ୍ᵝὶ㏿ࡢୗ㝈ࡣ25 m/s⛬ᗘࡔ࡜⪃࠼ࡽࢀࡿ㸬 ࢩࣜ࢝ࢼࣀ⢏Ꮚ 363 ࡟ࡼࡿ㑄㡢㏿ࢹࣝࢱ⩼⾲㠃㠀 ᐃᖖᅽຊศᕸィ 

㠀࿘ᮇⓗ࡞ኚືᅽຊࡢィ ஦౛࡜ࡋ࡚㸪ࢩࣜ࢝ࢼࣀ⢏

Ꮚ PSP ࢆ⏝࠸࡚࡜ࡽ࠼ࡓ㑄㡢㏿ࢹࣝࢱ⩼㠃ୖࡢᅽຊศ ᕸ¹⁶⁾ࢆ⤂௓ࡍࡿ㸬㑄㡢㏿ᇦ࡛ࡣ㸪⩼௜㏆࡟⾪ᧁἼࡀⓎ⏕

ࡋ㸪๤㞳 ࡜ࡢᖸ΅࡟ࡼࡾ⾪ᧁἼ఩⨨ࡀ᫬㛫ⓗ࡟ኚືࡍ

ࡿࠕࣂࣇ࢙ࢵࢺ(buffet)ࠖ࡜࿧ࡤࢀࡿ⌧㇟ࡀ⏕ࡌࡿ㸬 Ᏹᐂ◊ࡢ㑄㡢㏿㢼Ὕࢆ⏝࠸࡚⾜ࡗࡓᐇ㦂ࡢࢭࢵࢺ࢔ࢵ

ࣉࢆᅗ㸱࡟♧ࡍ㸬ᮏᐇ㦂࡛ࡣ㸪ᚋ㏥ゅ65rࡢ⩼ࡢᕥ༙㠃

࡟PSPࢆሬᕸࡋࡓ㸬ྑ༙㠃࡟ࡣTSPࡀሬ⿦ࡉࢀ࡚࠾ࡾ㸪 ࡇࡢࢹ࣮ࢱ࠿ࡽᚓࡽࢀࡓ ᗘ᝟ሗࢆ⏝࠸࡚㸪PSPࡢ ᗘ

౫Ꮡᛶࡢ⿵ൾࢆ⾜ࡗࡓ㸬᧜ᙳ࡟ࡣ CMOS ⣲Ꮚࡢ㧗㏿ᗘ

ࣅࢹ࣓࢜࢝ࣛࢆ⏝࠸ࡓ㸬᧜ᙳ㏿ᗘࡣ1000 fps࡛࠶ࡿ㸬 ᅗ㸲(a)࡟ᅽຊ㸪 ᗘศᕸࡢࢫࢼࢵࣉࢩࣙࢵࢺࢆ♧ࡍ㸬

࣐ࢵࣁᩘࡣ0.9㸪㏄ゅࡣ20r࡛࠶ࡿ㸬⩼୰ኸ㒊࡟ぢࡽࢀ

ࡿ2࠿ᡤࡢ㧗ᅽᇦࡀ⾪ᧁἼ࡟ࡼࡿࡶࡢ࡛࠶ࡿ㸬ᅽຊࢹ࣮

ࢱࡢᐃ㔞ᛶࢆホ౯ࡍࡿࡓࡵ࡟㸪⩼࡟ᇙࡵ㎸ࢇࡔᑠᆺ༙ᑟ యᅽຊࢭࣥࢧ㸦Kulite XCQ-062㸧ฟຊ࡜ࡢẚ㍑ࢆ⾜ࡗࡓ

⤖ᯝࢆᅗ㸲(b)࡟♧ࡍ㸬ࡇࡢᅗࢆぢࡿ࡜ࢃ࠿ࡿࡼ࠺࡟㸪 PSP࡟ࡼࡿィ ⤖ᯝࡣ㸪༙ᑟయᅽຊࢭࣥࢧฟຊ࡜ࡼࡃ୍

⮴ࡍࡿ㸬ὶࡋ᧜ࡾ᧜ᙳ࡟ࡼࡿ㠀ᐃᖖᅽຊศᕸィ ࡛ࡣ㸪 1 kHzࡢኚືࢆ1 kPa⛬ᗘࡢ⢭ᗘ࡛࡜ࡽ࠼ࡿࡇ࡜ࡀྍ⬟

࡛࠶ࡿࡇ࡜ࡀศ࠿ࡿ㸬

$$363 ࡟ࡼࡿ⩼ᚋ⦕㒊ࡢ㠀ᐃᖖᅽຊศᕸィ  ከᩘࡢ㐃⥆ࡋࡓ⏬ീࢹ࣮ࢱࡢྛⅬ࡟ࡘ࠸࡚ồࡵࡓᅽຊ Fig. 3 Experimental setup for transonic delta wing

Shock Wave

Leading-edge Vortex PSP

TSP

100kPa

0kPa 10ΥΥ 20Υ

M = 0.9, D= 20 deg, p0= 150 kPa, p_f= 89 kPa

(a) Instantaneous pressure and temperature distributions

40 50 60 70 80 90 100

0 20 40 60 80 100

.XOLWH 363

pressure [kPa]

time[ms]

(b) Comparison between PSP and pressure tap Fig. 4 Unsteady pressure on the delta wing¹⁶⁾ 䛂㢼Ὕᢏ⾡䛾㛤Ⓨ䛸ᛂ⏝䝅䞁䝫䝆䜴䝮䛃ㅮ₇㞟㻔➨䠍ᅇ䡚➨䠐ᅇ㻕 㻝㻟

This document is provided by JAXA.

᫬㛫ᒚṔࢆFFT࡟ࡼࡿ࿘Ἴᩘࢫ࣌ࢡࢺࣝ࡟ኚ᥮ࡋ㸪ὀ┠

ࡋࡓ࠸࿘Ἴᩘࢹ࣮ࢱࢆᢳฟࡍࡿࡇ࡜࡛㸪࿘ᮇⓗ࡞ᅽຊኚ

ືࢆ࡜ࡽ࠼ࡿሙྜࡣ኱ᖜ࡞S/N ẚࡢྥୖࡀྍ⬟࡛࠶ࡿ㸬 ࡇࡇ࡛ࡣ㸪୰໭¹⁷⁾ࡀ⾜ࡗࡓNACA0012⩼ᚋ⦕㒊ࡢኚື

ᅽຊィ ⤖ᯝࢆ⤂௓ࡍࡿ㸬

ࡇࡢᐇ㦂࡛ࡣ㸪JAXAࡢᑠᆺప஘㢼Ὕ㸦ィ 㒊㧗ࡉ65 cm™ᖜ55 cm㸧ࢆ⏝࠸࡚㸪୍ᵝὶὶ㏿28 m/sࡢ᮲௳࡛㸪

⩼ᘻ㛗250 mmࡢNACA0012ᶍᆺᚋ⦕௜㏆ࡢᅽຊኚື

ࢆㄪ࡭࡚࠸ࡿ㸬⩼ࢫࣃࣥ᪉ྥ୰ኸ㒊࡟AA-PSPࢆሬᕸࡋ㸪 㧗ฟຊ㟷Ⰽ༙ᑟయ࣮ࣞࢨ㸪12bit 㧗㏿ᗘࣅࢹ࣓࢜࢝ࣛࡢ

⤌ࡳྜࢃࡏ࡛㠀ᐃᖖᅽຊኚືศᕸࢆ࡜ࡽ࠼࡚࠸ࡿ㸬 ᅗ㸳࡟ᐇ㦂࠿ࡽᚓࡽࢀࡓᅽຊ᣺ᖜ㸪఩┦ᕪศᕸࢆ♧ࡍ㸬

༑ศ࡞ᩘ㸦53,000Ⅼ⛬ᗘ㸧ࡢ PSP᫬⣔ิ⏬ീࢹ࣮ࢱࢆ

⏝࠸࡚㸪≉ᐃࡢ࿘Ἴᩘ㸦917 Hz㸧࡟╔┠ࡍࢀࡤ㸪ኚືᅽ ຊ࡟ࡘ࠸࡚ࡣ㸪10 Pa࣮࢜ࢲࡢ᣺ື᣺ᖜࡀ㠃ୖࡢ఩┦ศ ᕸ᝟ሗ࡜࡜ࡶ࡟ᢳฟ࡛ࡁࡿࡇ࡜ࡀศ࠿ࡿ㸬

䠏䠊䛚䜟䜚䛻㻌

⩼ࢆᑐ㇟࡜ࡋࡓ㢼Ὕᐇ㦂ࡢ⤖ᯝࢆ⏝࠸࡚㸪PSPィ ࡢ

⌧ἣࢆ⤂௓ࡋࡓ㸬ᐃᖖᅽຊィ ࡛ࡣ஧Ⰽ⣲ሬᩱࡢᛶ⬟ྥ

ୖࡀᚅࡓࢀࡿ㸬㠀ᐃᖖᅽຊィ ࡣ㸪ග※㸪࣓࢝ࣛᛶ⬟ࡢ

ྥୖࡶ࠶ࡾ㸪┤㏆㸳ᖺ࡛ⴭࡋࡃಙ㢗ᛶࢆ㧗ࡵ࡚࠸ࡿ㸬 ᮏ✏ࢆࡲ࡜ࡵࡿ࡟࠶ࡓࡗ࡚㸪JAXA㢼Ὕᢏ⾡㛤Ⓨࢭࣥ

ࢱ࣮ࡢ୰໭࿴அ㸪‶ᑿ࿴ᚨࡢ୧Ặ࠿ࡽ㈗㔜࡞ࡈຓゝ࡜ᐇ 㦂ࢹ࣮ࢱࡢᥦ౪ࢆཷࡅࡓ㸬グࡋ࡚ㅰពࢆ⾲ࡋࡲࡍ㸬

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⾡ࢩ࣏ࣥࢪ࣒࢘ -6$66 10

100 1000 Power (Pa²)

1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 3000

300

30

-100 0 100 Phase (deg.)

150

50

-50 - 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 1 1

5 5 5 5 5 5 5

-

-150

Sound power

Phase difference

Fig. 5 Unsteady pressure fluctuation around the trailing edge of NACA0012 wing¹⁷⁾

Ᏹᐂ⯟✵◊✲㛤Ⓨᶵᵓ≉ู㈨ᩱ䚷㻶㻭㼄㻭㻙㻿㻼㻙㻝㻡㻙㻜㻞㻝 㻝㻠

This document is provided by JAXA.