ࢹ࢕ࣥࣉࣝࡢᩜタ࠾ࡼࡧ⬦ື෭༷ὶ࡟ࡼࡿ࢞ࢫࢱ࣮ࣅࣥ⩼ᚋ⦕㒊࢝ࢵࢺࣂࢵࢡ㠃ୖࣇ࢕࣒ࣝ෭༷ࡢ㧗ᛶ⬟໬ᚨṊኴ㑻ᮾி㎰ᕤ኱Ꮫ኱Ꮫ㝔ᕤᏛᗓᶵᲔࢩࢫࢸ࣒ᕤᏛᑓᨷ㸯㸬ࡣࡌࡵ࡟ ⯟✵⏝࣭⏘ᴗ⏝࢞ࢫࢱ࣮ࣅࣥࡢ⇕ຠ⋡ྥୖࡢࡓࡵ࡟ࡣࠊࡼࡾᑡ㔞ࡢ✵Ẽ㔞࡛ࢱ࣮ࣅࣥ⩼➼ࡢᵓ㐀㒊ᮦࢆᡤᐃ ᗘࡲ࡛෭༷ࡍࡿࡇ࡜ࡀ㔜せ࡛࠶ࡿࠋ࢞ࢫࢱ࣮ࣅࣥ⩼ᚋ⦕㒊ࡣᙧ≧ࡀⷧ࠸࠺࠼࡟ࠊ⩼⾲⿬㠃࠿ࡽࡢධ⇕ࡀᏑᅾࡍࡿࡓࡵࠊ෭༷ࡀ᭱ࡶᅔ㞴࡞㒊఩ࡢ୍ࡘ࡛࠶ࡿࠋᮏㄢ㢟࡛ࡣ⩼ᚋ⦕㒊ࡢ࢝ࢵࢺࣂࢵࢡ㠃ࣇ࢕࣒ࣝ෭༷ᢏ⾡㸦෭༷✵Ẽࢆ࢝ࢵࢺࣂࢵࢡ㠃ୖ࡟྿ࡁฟࡋࠊ⇕㐽ⶸ࡜ᑐὶ෭༷ࢆྠ᫬࡟⾜࠺ᡭἲ㸧ࢆᑐ㇟࡟ࠊ෭༷ຠ⋡ࡢ㧗ᛶ⬟໬ࢆ┠ⓗ࡜ࡍࡿࠋᅗ 1 ࡟࢝ࢵࢺࣂࢵࢡ㠃ୖࣇ࢕࣒ࣝ෭༷ࡢᶍᘧᅗࢆ♧ࡍࠋ࢝ࢵࢺࣂࢵࢡ㠃ୖࣇ࢕࣒ࣝ෭༷ࡢᛶ⬟ࡣࠊ⇕㐽ⶸᛶ⬟࡜ࡋ࡚ࣇ࢕࣒ࣝ෭༷ຠ⋡ η㸦=(Tmain-Taw)/(Tmain-Tcool)㸧
ࠊ⇕ఏ㐩ᛶ⬟࡜ࡋ࡚⇕ఏ㐩⋡ h(=q/(Tq-Taw))ࢆ↓ḟඖ໬ࡋࡓࢾࢭࣝࢺᩘ Nu(=hDe/k)࡟ࡼࡗ࡚⾲ࡉࢀࡿࠋࡇࡇ࡛ T ࡣ ᗘ[K]ࠊq ࡣ⇕ὶ᮰[W/m2]ࠊDe ࡣ➼౯┤ᚄ[m]ࠊk ࡣ⇕ఏᑟ⋡[W/mK]ࠊῧ࠼Ꮠࡢ main ࡣ୺ὶࠊcoolࡣ෭༷ὶࠊaw ࡣ᩿⇕ቨࠊq ࡣຍ⇕ቨ࡛࠶ࡿࠋᖹ⁥㠃ୖ࢝ࢵࢺࣂࢵࢡ㠃ࡢࣇ࢕࣒ࣝ෭༷࡛ࡣࠊ୺
ὶ࡜෭༷ὶࡢ㉁㔞ὶ᮰ẚࡀ Martini ࡽ[1]࡟ࡼࡿᐇ㦂࡛ࡣ 0.8 ௜㏆ࡢ࡜ࡁ࡟㸪Schneider ࡽ[2]࡟ࡼࡿィ⟬࡛ࡣ 0.95 ㏆ഐࡢ࡜ࡁ࡟㸪୺ὶ࡜෭༷ὶࡢ㝸ቨ➃㒊࠿ࡽ኱つᶍ ࡀ࿘ᮇⓗ࡟Ⓨ⏕ࡍࡿࡇ࡜࡛୺ὶ࡜෭༷ὶࡢΰྜࡀಁ㐍ࡉࢀࠊࣇ࢕࣒ࣝ෭༷ຠ⋡ࡀపୗࡍࡿࡇ࡜ࡀሗ࿌ࡉࢀ࡚࠸ࡿ㸦ᅗ 2࡟ᩘ್ゎᯒ࡟ࡼࡾྍど໬ࡋࡓ኱つᶍ ࢆ♧ࡍ㸧ࠋ➹⪅ࡢࢢ࣮ࣝࣉ࡛ࡣ኱つᶍ ࡢⓎ⏕࿘Ἴᩘ࡟ᑐࡋ࡚㞳ㄪ࿘Ἴᩘࡢ⬦ືࢆࣇ࢕࣒ࣝ෭༷ὶ࡬௜୚ࡍࡿࡇ࡜࡛ࡢࣇ࢕࣒ࣝ෭༷ຠ⋡ྥୖ[3][4][5]ࠊ࠾
ࡼࡧ࢝ࢵࢺࣂࢵࢡ㠃ୖ࡟ࢹ࢕ࣥࣉࣝ㸦พࡳᙧ≧㸧ࢆᩜタࡋ஘ὶಁ㐍ࡉࡏࡿࡇ࡜࡟ࡼࡿ࢝ࢵࢺࣂ
ࢵࢡ㠃ୖࢾࢭࣝࢺᩘࡢྥୖ[6][7][8]࡟ࡘ࠸࡚◊✲ࢆᐇ᪋ࡋ࡚࠸ࡿࠋᮏㄢ㢟࡛ࡣ⬦ື෭༷ὶࡢ௜୚࠾ࡼࡧࢹ࢕ࣥࣉࣝࡢᩜタ࡟ࡼࡿࣇ࢕࣒ࣝ෭༷ຠ⋡ࠊࢾࢭࣝࢺᩘྥୖຠᯝࡢ⪃ᐹࡢࡓࡵ」ᩘ᮲௳/ᙧ≧ࡢ࢝ࢵࢺࣂࢵࢡ㠃ୖ㠀ᐃᖖ ᗘሙࠊὶࢀሙࢆ LES(Large Eddy Simulation)࡟ࡼࡗ࡚ゎᯒࡋࡓࠋ௨ୗ࡟ࡑࡢᴫせࢆグ㍕ࡍࡿࠋ


0DLQ)ORZ/LS&RROLQJ)ORZ&XWEDFN6XUIDFHਦ 1 Ϊηνʖϑϱཏ‫ޛ‬ԓ෨Ωρφώρέ໚৏ϓΡϩϞྮ‫ླྀ٭‬͹ໝࣞਦ

スーパーコンピューティングニュース- 35-

Vol. 24, No.52022

θL 0.0 0.2 0.4 0.6 0.8 1.0yzx

ਦ 2 Ωρφώρέ໚৏୉‫و‬ໝ๎ड़Ӗ͹ՆࢻԿʤօ৯ʁѻྙรಊ͹౵஍໚ɼྚ৯ʁร‫ܙ‬ଐౕτϱλϩ͹୊್෈รྖ Q ஍͹౵஍໚ɼΩϧʖαϱνʖʁໃ࣏‫ݫ‬ԻౕΝͨΗͩΗනͤʥ㸰㸬ᩘ್ゎᯒ᪉ἲ ᩘ್ゎᯒࡣ Oakforest-PACS ࢩࢫࢸ࣒࡟࡚ࠊOpenFOAM-2.4.x ࡢ᭷㝈య✚ἲࢯࣝࣂ࡟ࡼࡗ࡚ᐇ⾜ࡋࡓࠋ㠀ᅽ⦰ࡢ㐃⥆ࡢᘧ(ᘧ(1))ࠊNavier-Stokes ᪉⛬ᘧ(ᘧ(2))ࢆ PIMPLE ἲ࡛ゎ࠸ࡓࠋࡇࡇ࡛ࣃࢵࢩࣈࢫ࣮࢝ࣛࡢ࢚ࢿࣝࢠ࣮᪉⛬ᘧ(ᘧ(3))ࢆྠ᫬࡟ゎࡃࡼ࠺ࢯ࣮ࢫࢥ࣮ࢻࢆ⦅㞟ࡋࡓࠋLES ࡢ SubGrid-Scale(SGS)ࣔࢹࣝ࡟ࡣ Lagrangian Dynamic Smagorinsky ࣔࢹࣝࢆ౑⏝ࡋࡓࠋ∂u෥i=0∂x(1)∂u෥i ∂u෥u∂ p෤∂u෥i ∂u෥j∂i ෥j+=െ൬ ൰+ቊሺν+νSGS ሻ ቆ + ቇቋ∂t∂xj
∂xj ∂xi∂xi ρ ∂xj∂ν νSGS ∂ܶ෨∂ܶ෨∂=െ൫ܶ෨u෥൯+ቊ൬ +൰ ቋj∂t
∂xj
∂xj Pr PrSGS ∂xj

(2)

(3)

ࡇࡇ࡛㸪ୖ௜ࡁࡢ ෩ ࡣ✵㛫ࣇ࢕ࣝࢱᖹᆒࢆ⾲ࡋ㸪u[m/s]ࡣ㏿ᗘ㸪p [Pa]ࡣᅽຊ㸪ρ [kg/m3]ࡣᐦᗘ㸪ν [m2/s]ࡣື⢓ᛶಀᩘ㸪νSGS ࡣ SGS ⢓ᗘ࡛νSGS =C∆2 ට2S෨ ij S෨ ij(4)

1 ∂u෥i ∂u෥jS෨ ij = ቆ + ቇ2 ∂xj ∂xi࡜࡞ࡿ㸬ࡲࡓ㸪T [K]ࡣ(5)

ᗘ㸪Pr㸦=0.70㸧ࡣࣉࣛࣥࢺࣝᩘ㸪PrSGS㸦=0.90㸧ࡣ஘ὶࣉࣛࣥࢺࣝᩘ࡛㸪C ࡣ Lagrangian Dynamic Smagorinsky ࣔࢹ࡛ࣝᑟ࠿ࢀࡿಀᩘ Cs ࡢ஧஌㸪Δ ࡣࣇ࢕ࣝࢱࢧ࢖ࢬ࡛࠶ࡾ᱁Ꮚయ✚ࡢ୕஌᰿࡜ࡋࡓࠋ࡞࠾ࠊࣇ࢕࣒ࣝ෭༷ຠ⋡࡜ࢾࢭࣝࢺᩘࢆྠ୍ࡢὶࢀሙ࡟ᑐࡋ࡚ホ౯ࡍࡿࡓࡵࠊ2 ࡘࡢ␗࡞ࡿ ᗘ㓄ิ Taw㸦࢝ࢵࢺࣂࢵࢡ㠃ࡀ᩿⇕᮲௳㸧࡜ Tq㸦࢝ࢵࢺࣂࢵࢡ㠃ࡀຍ⇕᮲௳㸧ࢆ⏝࠸ࡓ࢚ࢿࣝࢠ࣮᪉⛬ᘧࢆྠ᫬࡟ゎ࠸ࡓࠋスーパーコンピューティングニュース
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Vol. 24, No.52022

ゎᯒᙧ≧ࡣᅗ 3 ࡟♧ࡍ࢝ࢵࢺࣂࢵࢡ㠃ୖࣇ࢕࣒ࣝ෭༷ࢆᶍࡋࡓᡥᖹ㏻㊰࡛࠶ࡾࠊᑍἲࡣ෭༷㏻㊰㧗ࡉ Hࠊ୺ὶ㏻㊰㧗ࡉ 4Hࠊ࢝ࢵࢺࣂࢵࢡ㠃㛗ࡉ 11.3H ࡛࠶ࡿࠋ෭༷ὶࡢᄇฟゅᗘࡣ୺ὶ࡟ᑐࡋ࡚ 10°࡛࠶ࡿࠋゎᯒ᮲௳ࡣ୺ὶࣞ࢖ࣀࣝࢬᩘ Remain(=Umain8H/ν)=25000ࠊ୺ὶ࡜෭༷ὶࡢ㉁㔞ὶ᮰ẚ࡛࠶ࡿࣈ࣮ࣟẚ M(=(ρU)main/(ρU)cool)=1.0 ࡜ࡋࡓࠋࡇࡇ࡛ U ࡣ᫬㛫ᖹᆒὶ㏿ࡢ⤯ᑐ್[m/s]ࢆ
⾲ࡍࠋᖜ᪉ྥࡢቃ⏺᮲௳࡟ࡣ࿘ᮇቃ⏺ࢆ㐺⏝ࡋࡓࠋቨ㠃ࡣࡍ࡭࡚⁥ࡾ࡞ࡋቃ⏺࡜ࡋࡓࠋ୺ὶࠊ෭
༷ὶࡢධཱྀቃ⏺࡟ࡣ㏿ᗘሙ࡟࠾࠸࡚ࣜࢧ࢖ࢡࣝቃ⏺㸦mappedFixedValue 㛵ᩘ㸧ࢆ㐺⏝ࡋࠊὶࢀࢆⓎ㐩ࡉࡏࡓࠋ⬦ື෭༷ὶࢆ㐺⏝ࡋࡓゎᯒࡣࠊ෭༷ὶࡢධཱྀቃ⏺࡟ࣜࢧ࢖ࢡࣝቃ⏺ࢆ㐺⏝ࡋࡓ࠺࠼࡛ࠊࡑࡢ㡿ᇦᖹᆒ㏿ᗘࢆ᫬㛫᪉ྥ࡟⬦ືࡉࡏࡓࠋ⬦ື෭༷ὶࡢᘧࡣ௨ୗ࡛⾲ࡉࢀࡿ㸬(7)ܷ௖௢௢௟ǡ௣௨௟௦௘ ൌ ܷ௖௢௢௟ ‫݊݅ݏܣ‬ሺʹߨ݂ሺ‫ ݐ‬൅ ‫ݐ‬଴ ሻሻUcool, pulse [m/s]ࡣ⬦ື⿵ṇᚋࡢ෭༷ὶࣂࣝࢡὶ㏿ࠊA [m/s]ࡣ⬦ືὶ㏿∦᣺ᖜࠊf ࡣ࿘Ἴᩘ[Hz]ࠊt0 [s]ࡣ఩┦ㄪᩚࡢࡓࡵࡢ᫬้ࢆ⾲ࡍ㸬Main flow

Cutback surface

yCooling flow

zxLipᅗ ゎᯒᙧ≧㸦࢝ࢵࢺࣂࢵࢡ㠃ୖࣇ࢕࣒ࣝ෭༷㸧ᖹ⁥࢝ࢵࢺࣂࢵࢡ㠃ࡢゎᯒ᱁Ꮚࡣᵓ㐀 6 㠃య᱁Ꮚ࡛ࠊࢹ࢕ࣥࣉࣝ௜ࡁ࢝ࢵࢺࣂࢵࢡ㠃ࡢゎᯒ᱁Ꮚࡣ㠀ᵓ㐀 6 㠃య᱁Ꮚ࡛సᡂࡋࡓࠋᖹ⁥࢝ࢵࢺࣂࢵࢡ㠃࡟࠾ࡅࡿ௦⾲᱁Ꮚゎീᗘࡣ Δx+=13.0㸪
Δy+=0.8~8.0㸪Δz+=11.5 ࡛࠶ࡾࠊ᫬㛫้ࡳࡣ Δt+=0.057 ࡛࠶ࡿࠋ⤫ィ᫬㛫ࡣ෭༷ὶὶ㏿࡛ὶయࡀ࢝ࢵࢺࣂࢵࢡ㠃ୖࢆ 43sweep ࡍࡿ᫬㛫㸦t+=8,500ࠊt*=450㸧࡜ࡋࡓࠋ᱁Ꮚゎീᗘࡢ཰᮰≧ἣࡣู㏵ࡢゎᯒ࡛ồࡵ࡚࠾ࡾࠊᮏ᱁Ꮚゎീᗘ࡟࠾࠸࡚≀⌮㔞࡬ࡢᙳ㡪ࡀᑠࡉ࠸ࡇ࡜ࢆ☜ㄆࡋࡓࠋᮏゎᯒ࡛ࡣࢹ࢕ࣥࣉࣝ⢒㠃ࡢ」㞧ᙧ≧ୖࡢ㠀ᐃᖖ஘ὶゎᯒ࡟ከᩘࡢ㏿ᗘ࣋ࢡࢺࣝ㓄ิࠊ ᗘ㓄ิࠊ஘ࢀᗘ⟬ฟ⏝ࡢࢸࣥࢯࣝ㓄ิࢆྲྀࡾᢅࡗࡓࡇ࡜࠿ࡽࠊ⭾኱࡞ᐇ⾜࣓ࣔࣜ࡜ࢹ࢕ࢫࢡᐜ㔞ࢆせࡋࡓࠋࡲࡓ఩┦ᖹᆒ್ࢆྲྀᚓࡍࡿゎᯒࢆᐇ᪋ࡋࡓࡓࡵࠊ⤫ィᐃᖖࢆྲྀᚓࡍࡿࡲ࡛࡟㏻ᖖࡼࡾከࡃ
ࡢゎᯒ᫬㛫ࢆせࡋࡓࠋୖグࡢ  Ⅼ࡟࠾࠸࡚ 2DNIRUHVW3$&6 ࢩࢫࢸ࣒ࡢ౑⏝࠾ࡼࡧⱝᡭ࣭ዪᛶ฼
⏝⪅᥎⸀ไᗘ࡟ࡼࡿィ⟬ᶵ㈨※ࡀ኱ኚ᭷┈࡞ࡶࡢ࡜࡞ࡗࡓࠋ㸱㸬⤖ᯝ
ᅗ 4 ࡟࢝ࢵࢺࣂࢵࢡ㠃ୖࣇ࢕࣒ࣝ෭༷ὶࡢ▐᫬↓ḟඖ ᗘ θ’L(=(Tmain-T’aw)/(Tmain-Tcool))ࠊ࠾ࡼ
ࡧ᫬㛫ᖹᆒ↓ḟඖᗘ θL(=(Tmain-Taw_mean)/(Tmain-Tcool))ࡢศᕸࢆ♧ࡍ㸦᫬㛫ᖹᆒ↓ḟඖᗘࡣࣇ࢕࣒ࣝ෭༷ຠ⋡ η ࡜ྠᐃ⩏࡛࠶ࡿ㸧ࠋ(a)ࡣᖹ⁥࢝ࢵࢺࣂࢵࢡ㠃ୖᐃᖖ෭༷ὶ࡛ࡢゎᯒ⤖ᯝࢆࠊ(b)ࡣࢹ࢕ࣥࣉࣝ௜ࡁ࢝ࢵࢺࣂࢵࢡ㠃ୖᐃᖖ෭༷ὶ࡛ࡢゎᯒ⤖ᯝࢆࠊ(c)ࡣᖹ⁥࢝ࢵࢺࣂࢵࢡ㠃ୖ⬦ືスーパーコンピューティングニュース
- 37-

Vol. 24, No.52022෭༷ὶ࡛ࡢゎᯒ⤖ᯝࢆࡑࢀࡒࢀ♧ࡍࠋ(c)ࡢ᮲௳࡛ࡣࠊ኱つᶍ ࡢⓎ⏕࿘Ἴᩘ࡟ᑐࡋ࡚㞳ㄪࡍࡿ࿘Ἴᩘ࡛ࡢ⬦ືࢆ෭༷ὶ࡟௜୚ࡋ࡚࠸ࡿࠋ(a)ࡢ▐᫬↓ḟඖὶࡢᗘሙ࠿ࡽ኱つᶍ࡟ࡼࡿ୺ὶ࡜෭༷

ᗘΰྜࡀ☜ㄆ࡛ࡁࡿࠋ(b)ࡢࢹ࢕ࣥࣉࣝ௜ࡁ࢝ࢵࢺࣂࢵࢡ㠃ୖὶࢀሙ࡛ࡣࢹ࢕ࣥࣉࣝ࡟ࡼࡿ෭༷ὶࡢ஘ὶಁ㐍ຠᯝࡀ኱つᶍ࡟ᖸ΅ࡋࠊ ᵓ㐀ࡀ(a)࡜ẚ࡭࡚⦰ᑠࡋ࡚࠸ࡿᵝᏊࡀศ࠿ࡿࠋ

ࡇࢀ࡟ࡼࡾ࢝ࢵࢺࣂࢵࢡ㠃ୖ᫬㛫ᖹᆒ↓ḟඖᗘ㸦ࣇ࢕࣒ࣝ෭༷ຠ⋡㸧ࡣ(a)࡟ᑐࡋ࡚ྥୖࡋࡓࠋ

ࡉࡽ࡟ࠊ(b)࡟࠾࠸࡚ࡣࢹ࢕ࣥࣉࣝ࡟ࡼࡿ࢝ࢵࢺࣂࢵࢡ㠃ୖࡢὶࢀࡢ๤㞳/෌௜╔ࡀ⏕ࡌࠊࢾࢭࣝ
ࢺᩘࡀ኱ᖜ࡟ྥୖࡋࡓ㸦ᅗ┬␎㸧ࠋ(c)ࡢ⬦ື෭༷ὶ᮲௳࡛ࡣ(a)࡟ẚ࡭࡚ᵓ㐀ࡢ࿘ᮇᛶࡀᙅࡃࠊẚ㍑ⓗᑠつᶍࡢᗘΰྜࡀ⏕ࡌ

࡚࠸ࡿࡇ࡜ࡀศ࠿ࡿࠋ(c)࡟࠾࠸࡚ࡶ(b)࡜ྠᵝࠊୖグࡢ⌮⏤࡛ࣇ࢕࣒ࣝ෭༷ຠ⋡ࡣ(a)࡟ᑐࡋ࡚ྥ
ୖࡋࡓࠋ௨ୖࡢࡼ࠺࡟ࠊࢹ࢕ࣥࣉࣝࡢᩜタ࠾ࡼࡧ⬦ື෭༷ὶࡢ௜୚ࡣ࢝ࢵࢺࣂࢵࢡ㠃ୖࣇ࢕࣒ࣝ෭༷ᛶ
⬟ࢆྥୖ࡛ࡁࡿࠋ

θ’L

θL

θL=1.0θL=0.5(a) Smooth cutback surface, steady cooling flow
θ’L

θL

θL=1.0θL=0.5(b) Dimpled cutback surface, steady cooling flow
θ’L

θL

θL=1.0θL=0.5(c) Smooth cutback surface, pulsating cooling flowᅗ ࢝ࢵࢺࣂࢵࢡ㠃ୖ↓ḟඖ ᗘศᕸࡢẚ㍑
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Vol. 24, No.52022

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ࡢ᥼ຓࢆཷࡅࠊ2DNIRUHVW3$&.6 ࢩࢫࢸ࣒ࢆ฼⏝ࡋࡲࡋࡓࠋࡇࡇ࡟グ㍕ࡋឤㅰ⏦ࡋୖࡆࡲࡍࠋཧ ⪃ ᩥ ⊩
[1] Martini, P.: Filmkühlung hoch-beanspruchter Turbinen-schaufel-hinter-kanten: WärmeübergangundStrömung im Nahfeld praxis-bezogener Ausblase-spalte. Dissertation, University of Karls-ruhe,Karlsruhe, Germany (2008).
[2] Schneider, H., von Terzi, D., Bauer, H-J., “Turbulent Heat Transfer and Large Coherent Structures inTrailing-edge Cutback Film Cooling”, Flow Turbulence Combust, Vol. 88(2012), pp.101-120.
[3] Murata, A. Nishida, S., Saito, H., Iwamoto, K., Okita, Y., and Nakamata, C., 2012, “Effects of Surface
Geometry on Film Cooling Performance at Airfoil Trailing Edge”, J. of Turbomacihinery, 134(5),051033.
[4] Murata, A., Yano, K., Hanai, M., Saito, H., and Iwamoto, K., 2017, “Arrangement Effects of Inclined
Teardrop-Shaped Dimples on Film Cooling Performance of Dimpled Cutback Surface at Airfoil
Trailing Edge”, Int. J. of Heat and Mass Transfer, 107, pp. 761-770.
[5] Murata, A., Mori, E., and Iwamoto, K., 2014, “Effects of Surface Geometry And Blowing Ratio onFilm Cooling Performance At Airfoil Trailing Edge Investigated By Using Large Eddy Simulation”,
Proc. of the 15th Int. Heat Transfer Conference, Kyoto, IHTC15-8914.
[6] Yamamoto, S., Murata, A., Hayakawa, S., and Iwamoto, K., nThree-Component PTV Measurementsof Pulsating Film-Cooling Flow over Smooth Cutback Surface at Trailing Edge of Gas Turbine Airfoil”,Proc. Asian Congress on Gas Turbines 2018, Iwate, 86.
[7] Yamamoto, S., Murata, A., Taniguchi, H., Hayakawa, H., and Iwamoto, K., 2019, “Effects of Cooling
Flow Pulsation on Film Cooling Performance Over Smooth Cutback Surface at Airfoil Trailing Edge
Measured by Transient Technique with Compensation of Three-Dimensional Heat Conduction”, Proc.
of Int. Gas Turbine Congress 2019, Tokyo, 97.
[8] Tokutake, T., Murata, A., Nakajima, D., Yamamoto, H., and Iwamoto, K., 2019, “Large Eddy
Simulation of Film Cooling Performance of Smooth Cutback Surface at Airfoil Trailing Edge
Improved by Pulsating Cooling Flow”, Proc. of Int. Gas Turbine Congress 2019, Tokyo, 47.
[9] Yamamoto, S., Murata, A., Oho, K., Hayakawa, C., Hayakawa S., and Iwamoto, K., 2021, “PulsatingFilm-Cooling Flow Over Smooth Cutback Surface at Airfoil Trailing Edge Measured by 2D3C-PTV”,
J. of Heat Transfer, 143(9), 092101.
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