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SIMPLE HOUSE MODEL CONSIDERING FLOW FLUCTUATION Study on naturally cross-ventilated house using large-eddy simulation(LES) part 1

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Yoshihide TOMINAGA, Jun SAKAGUCHI, Miho HONDA, Yuki ARINAMI

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Graduate Students,Graduate School of Science and Technology, Niigata University, M. Eng.

Prof.,Graduate School of Science and Technology, Niigata University, Dr. Eng.

Prof.,Department of Architecture and Building Engineering, Niigata Institute of Technology, Dr. Eng.

Prof.,Faculty of International Studies and Regional Development, Department of International Studies and Regional Development,University of Niigata Prefecture, Dr. Eng.

Japan Railway Construction, Transport and Technology Agency, M. Eng.

(Former Graduate Student, Graduate School of Science and Technology, Niigata University)

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単純住宅モデルを対象とした変動気流場における室内外通風性状の解析

LES（Large-Eddy Simulation）による住宅の自然換気・通風性状に関する研究　その１ ANALYSIS OF CROSS VENTILATION AIRFLOW IN AND AROUND

SIMPLE HOUSE MODEL CONSIDERING FLOW FLUCTUATION Study on naturally cross-ventilated house using large-eddy simulation(LES) part 1

高野康夫

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，赤林伸一

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Yasuo TAKANO, Shin-ichi AKABAYASHI, Yoshihide TOMINAGA,

Jun SAKAGUCHI, Miho HONDA and Yuki ARINAMI

　　　　＊

　新潟大学大学院自然科学研究科　大学院生・修士（工学）

　　　＊＊

　新潟大学大学院自然科学研究科　教授・工博

　　＊＊＊

　新潟工科大学建築学科　教授・博士（工学）

　＊＊＊＊

　新潟県立大学国際地域学部国際地域学科　教授・博士（工学）

＊＊＊＊＊

　鉄道建設・運輸施設整備支援機構　修士（工学）

（当時　新潟大学　大学院生）

Grad. Stud., Graduate School of Science and Technology, Niigata University, M. Eng.

Prof., Graduate School of Science and Technology, Niigata University, Dr. Eng.

Prof., Dept. of Architecture and Building Engineering, Niigata Institute of Technology, Dr. Eng.

Prof., Faculty of International Studies and Regional Development, Department of International Studies and Regional Development, University of Niigata Prefecture, Dr. Eng.

Japan Railway Construction, Transport and Technology Agency, M. Eng.

(Former Grad. Stud., Graduate School of Science and Technology, Niigata University)

日本建築学会環境系論文集第80巻第716号，925-934， 2015年10月

J. Environ. Eng., AIJ, Vol. 80 No. 716, 925-934, Oct., 2015 DOI http://doi.org/10.3130/aije.80.925

【カテゴリーⅠ】

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ࡲ࡜ࡵࡓࡶࡢ࡛࠶ࡿࠋ

ࠉ/(6 ゎᯒࡢᴫせ ࠉゎᯒᑐ㇟

ࠉ)LJ ࡟༢⣧ఫᏯࣔࢹࣝࡢᴫせࢆࠊ7DEOH ࡟ゎᯒ &DVH ࢆ♧ࡍࠋゎ ᯒᑐ㇟ࡣ >PP@ 㛗ࡉ >PP@ 㧗ࡉ >PP@ ᖜ ࡢ❧᪉ యᙧ≧ࡢ༢⣧ఫᏯࣔࢹࣝ࡜ࡍࡿࠋࣔࢹࣝ $ ࡛ࡣ㢼ୖഃ࡜㢼ୗഃቨ㠃

୰ኸ㒊࡟ࠊࣔࢹࣝ $ ࡛ࡣ㢼ྥ࡟ᑐࡋᖹ⾜࡞୧᪉ࡢቨ㠃୰ኸ㒊࡟ࡑࢀ

ࡒࢀ㛤ཱྀࢆ㸯⟠ᡤࡎࡘタࡅࡿࠋࣔࢹࣝ % ࡛ࡣ㢼ୖഃቨ㠃࡟ࠊࣔࢹࣝ

% ࡛ࡣ㢼ୗഃቨ㠃࡟ࠊ㢼ྥ࡟ᑐࡋ࡚ᑐ⛠࡟㛤ཱྀࢆ㸰⟠ᡤタࡅࡿࠋࣔ

ࢹࣝ % ࡛ࡣ㢼ྥ࡟ᑐࡋᖹ⾜࡞㸯ࡘࡢቨ㠃ࡢ㢼ୖࠊ㢼ୗ࡟㛤ཱྀࢆ㸰⟠

ᡤタࡅࡿࠋ࡝ࡢࣔࢹࣝ࡟࠾࠸࡚ࡶ㛤ཱྀ㒊ࡢ኱ࡁࡉࡣ >PP@ 㧗ࡉ

>PP@ ᖜ ࡜ࡋࠊᆅ⾲㠃࠿ࡽ㧗ࡉ >PP@ ࡢ఩⨨ࢆ㛤ཱྀࡢ୰ᚰ࡜ࡍࡿࠋ

ࣔࢹࣝ % 㹼 % ࡛ࡣ㛤ཱྀྠኈࡢ㛫㝸ࡣ >PP@ ࡜ࡍࡿࠋ ࠉ/(6 ゎᯒ᮲௳

ࠉ7DEOH ࡟ゎᯒ᮲௳

^ὀ㸰

ࢆ♧ࡍࠋᮏ◊✲ࡢ /(6 ゎᯒ࡟ࡣỗ⏝ᩘ್ὶ యゎᯒࢯࣇࢺ 675($0 YHU㸦ओࢯࣇࢺ࢙࢘࢔ࢡࣞ࢖ࢻࣝ㸧ࢆ౑⏝ࡍ

ࡿࠋVXEJULG VFDOH ࣔ ࢹ ࣝ 6*6 ࣔ ࢹ ࣝ ࡣ '\QDPLF ᆺ 6PDJRULQVN\

ࣔࢹࣝࢆ౑⏝ࡋࠊ➼ ࡛ゎᯒࡍࡿࠋቨ㠃ቃ⏺᮲௳࡟ࡣ :HUQHU:HQJOH ᆺࡢቃ⏺᮲௳

ࢆ୕ᒙࣔࢹࣝ࡟ᣑᙇࡋࡓ᮲௳ᘧ

^ὀ㸱

ࢆ⏝࠸ࡿࠋ /(6 ゎᯒࡢࣇ࣮ࣟ

ࠉ)LJ ࡟ゎᯒ㡿ᇦࢆࠊ)LJ ࡟ఫᏯࣔࢹࣝ㏆ഐࡢ࣓ࢵࢩࣗศ๭ࢆ♧

ࡍࠋゎᯒ㡿ᇦࡣ㢼Ὕࢆᶍᨃࡍࡿࠋゎᯒ࣓ࢵࢩࣗศ๭࡛ࡣᑐ㇟ࣔࢹࣝ

㸯㎶ > ੈ @ ࢆ ศ๭ࠊ㛤ཱྀ㠃୍㎶ > ੈ @ ࢆ㸶ศ๭ࡋࠊ᭱

ᑠ࣓ࢵࢩࣗᖜࡣ > ੈ @ ࡜ࡋࡓࠋ

ࠉᮏ◊✲ࡢ /(6 ゎᯒ࡛ࡣࠊඛࡎࠊ㛤ཱྀ㒊ࡀ↓࠸༢⣧ఫᏯࣔࢹࣝ࡟ᑐ ࡋ࡚ゎᯒ㡿ᇦࡢୖὶ㒊ศ࡟ࢻࣛ࢖ࣂ࣮㡿ᇦࢆタࡅࠊὶධኚືẼὶࢆ

సᡂࡍࡿࡓࡵࡢࣉࣞゎᯒࢆ⾜࠺ࠋᇶ‽࡜ࡍࡿὶධࣉࣟࣇ࢓࢖ࣝࡣᕷ

⾤ᆅ㢼ࢆ᝿ᐃࡋࠊ㹓҃㹘

㹓 ὶ㏿ࠊ㹘㧗ࡉ ࡜ࡍࡿࠋᇶ‽㧗 ࡉ 㹸 >PP@ ࡟࠾ࡅࡿὶ㏿ࡣ >PV@ ࡛࠶ࡿࠋὶධኚືẼ

7DEOH$QDO\VLVFDVHV

case House Model Openings Position case1 Model A-1 WKHZLQGZDUGDQGOHHZDUGZDOOV case2 Model A-2 WKHRSSRVLWHZDOOVSDUDOOHOWRWKHZLQG

direction

case3 Model B-1 WKHZLQGZDUGZDOO

case4 Model B-2 WKHOHHZDUGZDOO

case5 Model B-3 WKHZDOOSDUDOOHOWRWKHZLQGGLUHFWLRQ

Opening i

Opening ii

300 40 300 130

130 㹶

㹷 Unit:[mm]

300

300 40 130 130

4045 45 40 130

300

40 45 45 40 130

300 4045

45 40 130

300 300

Opening i Opening ii

Opening i Opening ii Opening i

Opening ii

Opening i Opening ii Wind Direction

)LJ6LPSOHKRXVHPRGHO

㻹㼛㼐㼑㼘㻌㻭㻙㻝㻹㼛㼐㼑㼘㻌㻭㻙㻞

㻹㼛㼐㼑㼘㻌㻮㻙㻝㻹㼛㼐㼑㼘㻌㻮㻙㻞㻹㼛㼐㼑㼘㻌㻮㻙㻟

䡔䡕

7DEOH$QDO\VLVFRQGLWLRQV

SGS model Analysis region 6L]HRIKRXVHPRGHO

Opening Area

,QIORZ

2XWIORZ

6LGH7RS Free slip

Ground

%XLOGLQJZDOO Pre-analysis

Main analysis ǻW

Minimum mesh size 1XPEHURIPHVKHV

0.005[m]

[î\î]䠙

Analysis time >VHF@

10.0[sec]

0.00001[sec]

'\QDPLFVPDJRULQVN\PRGHO [ \ ] >P@

[ \ ] >P@

î䠙>P²]

Boundary condition

,QVWDQWDQHRXVZLQGYHORFLW\FRPSRQHQWVXYZ DUHSURGXFHGE\GULYHUUHJLRQFDOFXODWLRQ (U䌱Z^1/4UHIHUHQFHZLQGYHORFLW\ >PV@UHIHUHQFHKHLJKW >PP@

Zero gradient

Wall Boundary 7KUHHOD\HUPRGHORI:HUQHU:HQJOHZDOO

IXQFWLRQV

(3)

ὶࡢసᡂ᪉ἲࡣ∦ᒸࡽ

࡟ࡼࡿࠊ࿘ᮇቃ⏺᮲௳࡜࡞ࡗ࡚࠸ࡿࢻࣛ࢖

ࣂ࣮㡿ᇦࢆ⏝࠸ࡓᡭἲࢆ᥇⏝ࡍࡿࠋࡇࡢ᪉ἲ࡛ࡣࠊᢳฟ᩿㠃ࡢ㢼㏿

ࢆᖹᆒ್࡜ኚື್࡟ศゎࡋࠊኚື್ࡢࡳࢆࣜࢧ࢖ࢡࣝࡍࡿࠋࡑࡢⅭࠊ ᖹᆒ㏿ᗘࣉࣟࣇ࢓࢖ࣝࢆᔂࡍࡇ࡜࡞ࡃὶධኚືẼὶ

^ὀ㸲

ࢆసᡂ࡛ࡁ

ࡿࠋࣉࣞゎᯒࡣゎᯒ㛤ጞ᫬้㸦W >V@㸧࠿ࡽ W >V@ ࡲ࡛⾜࠺ࠋࣉ

ࣞゎᯒ࡟⥆ࡁࠊ㛤ཱྀࢆ᭷ࡍࡿ༢⣧ఫᏯࣔࢹࣝࢆゎᯒ㡿ᇦ࡟⨨࠸ࡓゎ ᯒ ᮏゎᯒ ࢆ⾜࠺ࠋW >V@ ࠿ࡽ W >V@ 㛫ࡣࣔࢹࣝ㛤ཱྀ㒊ࢆ㛤 ᨺࡋ࡚࠿ࡽᐊෆẼὶศᕸࡀᙧᡂࡉࢀࡿࡲ࡛ࡢ⛣⾜ᮇ㛫࡜ࡋ࡚ࢹ࣮ࢱ

ࢆ◚ᲠࡋࠊW >V@ ࠿ࡽ W >V@ ࡲ࡛ࠊィ >V@ 㛫ࢆᮏゎᯒࡢ

⤖ᯝ࡜ࡋ࡚⏝࠸ࡿࠋ

ࠉ/(6 ゎᯒ⤖ᯝ

ࠉ)LJ ࡟ὶධኚືẼὶࡢ [ ᪉ྥࡢᖹᆒ㢼㏿ẚศᕸ࡜஘ὶ࢚ࢿࣝࢠ࣮

ࡢ㖄┤ࣉࣟࣇ࢓࢖ࣝ ࢻࣛ࢖ࣂ࣮㡿ᇦୗὶ➃㒊㸸㹶 >PP@ ࢆ

♧ࡍࠋ[ ᪉ྥࡢᖹᆒ㢼㏿ẚศᕸࡣᇶ‽࡜ࡋࡓ㹓҃㹘

ࡢ㖄┤ࣉࣟࣇ࢓

࢖ࣝ࡜࡯ࡰ୍⮴ࡍࡿࠋ஘ὶ࢚ࢿࣝࢠ࣮ࡢ㖄┤ศᕸ࡛ࡣࠊ㢼Ὕᐇ㦂್

࡜ẚ㍑ࡋ࡚඲యⓗ࡟ᑠࡉ࠸್࡜࡞ࡗ࡚࠾ࡾࠊ㌺㧗 = >PP@ ࡛ࡣ 㢼Ὕᐇ㦂್࡜ẚ㍑ࡋ࡚⣙ 㹼㸣࡜࡞ࡿࠋ㌺㧗࡟࠾ࡅࡿ \ ཬࡧ ] ᪉

ྥ㢼㏿ᡂศࡢኚື㔞ࡢ 506 ್ࡣᇶ‽㢼㏿ PV ࡟ᑐࡋ࡚⣙㸳㸣࡛

࠶ࡿࠋ&DVH ࡟࠾࠸࡚ᑐ㇟ࣔࢹࣝእቨ㠃࡟࠾ࡅࡿቨ㠃࠿ࡽࡢ↓ḟඖ໬

㊥㞳 \ ࡢᖹᆒ್ࡣ⣙ ࡛࠶ࡿࠋ

ࠉᮏሗࡢ࣋ࢡࢺࣝᅗࡣ඲࡚ᇶ‽㧗ࡉ >PP@ ࡢ㢼㏿ >PV@8

UHI

࡛ᇶ‽໬ࡋࡓ㢼㏿ẚ࡜ࡋ࡚♧ࡍࠋཪࠊᐊෆ㢼㏿ࡣᐊእ㢼㏿࡜ẚ㍑

ࡋ࡚㐜࠸ࡓࡵࠊᐊෆ㢼㏿ẚࡢซ౛ࢆᐊእ㢼㏿ẚࡢ㸰ಸ࡜ࡋ࡚♧ࡍࠋ ࠉ㢼Ὕᐇ㦂࡟ࡼࡿ 3,9 ᐃ⤖ᯝ࡜ /(6 ゎᯒ⤖ᯝࡢẚ㍑

ࠉ)LJ ࡟ᖹᆒᐊෆእὶ㏿ศᕸࡢẚ㍑ &DVHࠊ㖄┤᩿㠃

^ὀ㸳

ࢆ♧ࡍࠋ 3,9 ᐃ࡜ࡣࠊὶࢀ࡟㏣ᚑࡍࡿᚤ⣽࡞ࢺ࣮ࣞࢧ⢏Ꮚࢆὶࢀሙ࡟ᩓᕸࡋ

࡚࣮ࣞࢨࢩ࣮ࢺ࡟ࡼࡾྍど໬ࢆ⾜࠸ࠊࣁ࢖ࢫࣆ࣮ࢻ࣓࢝ࣛ➼࡟ࡼࡾྲྀ

ᚓࡋࡓ㐃⥆ࡍࡿ஧᫬้㛫ࡢὶࢀሙࡢ⏬ീࢆゎᯒࡍࡿࡇ࡜࡛ࠊὶࢀሙࡢ

㏿ᗘศᕸࢆ㠀᥋ゐ࡛ ᐃࡍࡿᢏ⾡ࡢ⥲⛠࡛࠶ࡿࠋ➹⪅ࡽࡣูሗ

࡟

࡚ᮏሗ࡜ྠᵝࡢᑍἲࠊ㛤ཱྀ᮲௳ࡢ༢⣧ఫᏯࣔࢹࣝࢆᑐ㇟࡟኱ᆺቃ⏺ᒙ 㢼Ὕࢆ⏝࠸࡚ 3,9 ᐃࢆ⾜ࡗࡓ⤖ᯝࢆሗ࿌ࡋ࡚࠸ࡿࠋヲࡋ࠸ᐇ㦂᮲௳ࠊ ᪉ἲ➼ࡣูሗࢆཧ↷ࡉࢀࡓ࠸ࠋ

ࠉ᪤ ࡢ 3,9 ᐃ⤖ᯝ࡜ /(6 ゎᯒ⤖ᯝࢆẚ㍑ࡍࡿ࡜ࠊࣔࢹࣝᐊእ࡛ࡣ 㢼ୖഃእቨ㠃ࡢୖὶࡢᆅ⾲㠃௜㏆࡟ᙧᡂࡉࢀࡿ ཬࡧᒇ᰿㠃ࡢ๤㞳ᇦ ෆࡢ ࡛኱ࡁࡉࠊ఩⨨࡜ࡶ࡟࡯ࡰ୍⮴ࡋ࡚࠸ࡿࠋࣔࢹࣝᐊෆ࡛ࡣࠊ୧

⤖ᯝ࡜ࡶ࡟㢼ୖഃࡢ㛤ཱྀ㒊࠿ࡽẼὶࡀᩳࡵୗྥࡁ࡟ὶධࡋࠊ㢼ୗഃ㛤

ཱྀ㒊࠿ࡽᩳࡵୖྥࡁ࡟ẼὶࡀὶฟࡍࡿᵝᏊࡀᤊ࠼ࡽࢀ࡚࠸ࡿࠋణࡋࠊ ᘓ≀ࣔࢹࣝෆࡢ୺ὶࡢὶධゅᗘࡣ 3,9 ᐃ⤖ᯝࡢ᪉ࡀ኱ࡁࡃഴᩳࡋ࡚

࠸ࡿࠋ୍᪉ࠊὶฟẼὶ࡛ࡣ 3,9 ᐃ⤖ᯝࡣὶฟゅᗘࡀẚ㍑ⓗୖྥࡁ࡜

࡞ࡿഴྥࡀ࠶ࡾࠊ/(6 ゎᯒ⤖ᯝ࡛ࡣ┤⥺ⓗ࡟ᚋὶᇦ࡬ὶฟᚋ࡟ୖ᪼ࡍ

ࡿഴྥࡀ࠶ࡿࠋࡇࢀࡽࡢẼὶᛶ≧ࡢ୙୍⮴ࡢཎᅉ࡜ࡋ࡚ࡣࠊ)LJD

࡟࠾࠸࡚ࠊ/(6 ゎᯒ⤖ᯝ࡛ࡣὶධኚືẼὶࡢᆅ⾲㠃௜㏆ࡢ㢼㏿ࡀ㢼Ὕ ᐇ㦂⤖ᯝ࡜ẚ㍑ࡋ࡚㏿࠸ࡇ࡜ࠊྠ E ࡟࠾࠸࡚ࠊ஘ὶ࢚ࢿࣝࢠ࣮ࡀ㢼 Ὕᐇ㦂⤖ᯝ࡜ẚ㍑ࡋ࡚ /(6 ゎᯒ⤖ᯝ࡛ࡣᑠࡉ࠸ࡇ࡜ࡀ⪃࠼ࡽࢀࡿࠋ ࠉᮏ◊✲࡛⏝࠸ࡓ༢⣧ఫᏯࣔࢹࣝࢆᑐ㇟࡜ࡋࡓሙྜࠊᐊෆእẼὶᛶ≧

ࡣ 3,9 ᐃ࡜ /(6 ゎᯒ࡛ᐃᛶⓗ࡟ᴫࡡ୍⮴ࡋ࡚࠾ࡾࠊὶࢀሙࡢᇶᮏⓗ

࡞ᵓ㐀ࡣ෌⌧ࡉࢀ࡚࠸ࡿࡓࡵࠊ/(6 ゎᯒ࡟ࡼࡾ㏻㢼ᛶ⬟ホ౯ᑐ㇟࡜ࡍ

)LJ$SSURDFKLQJZLQGSUR㸚OH[ >PP@

0.00 0.10 0.20 0.30 0.40 0.50 0.60 0.70 0.80 0.90 1.00

0.0 0.2 0.4 0.6 0.8 1.0 1.2

y=0.3[m] y=0.9[m]

y=1.5[m] Power law (ɲ䠙0.25) Experiment

E7XUEXOHQWNLQHWLFHQHUJ\

+LJKW]>P@

D:LQGYHORFLW\RI[FRPSRQHQW

0.00 0.10 0.20 0.30 0.40 0.50 0.60 0.70 0.80 0.90 1.00

0.000 0.005 0.010 0.015

y=0.3[m] y=0.9[m]

y=1.5[m] Experiment

)LJ$QDO\VLVPHVKGLYLVLRQRIYLFLQLW\RIKRXVHPRGHO Eࠉ9HUWLFDOVHFWLRQ

House model PP

PP

Dࠉ+RUL]RQWDOVHFWLRQ

House model

PP

)LJ$QDO\VLVUHJLRQ D+RUL]RQWDOVHFWLRQ

E9HUWLFDOVHFWLRQ

Unit:[mm]

Driver region House model

900

[ y

Wind Direction

Driver region

House model

[ z

Wind Direction

(4)

ࡿ㢼Ὕᐇ㦂ࢆᐃᛶⓗ࡟෌⌧ࡍࡿࡇ࡜ࡀฟ᮶ࡓ࡜⪃࠼ࡽࢀࡿࠋ ࠉ/(6 ゎᯒ࡟ࡼࡿᐊෆእ㢼㏿ẚศᕸ

ࠉ)LJ 㹼 ࡟ྛ &DVH ࡢᐊෆእ㢼㏿ẚศᕸࢆ♧ࡍࠋ ࠉ㢼ୖഃ࡜㢼ୗഃ࡟㛤ཱྀࢆ᭷ࡍࡿሙྜ &DVH

ࠉ)LJF ࡢᖹᆒᐊෆእ㢼㏿ẚศᕸ࡛ࡣࠊ㢼ୖഃࡢ㛤ཱྀϸ࠿ࡽ㢼ୗ

ഃࡢ㛤ཱྀϹࡲ࡛┤⥺ⓗ࡞ὶࢀሙࡀ⏕ࡌ࡚࠸ࡿࠋᐊෆ࡟ࡣ୺ὶࢆ㍈࡜

ࡋ࡚ᴫࡡᑐ⛠ⓗ࡞ ࢆᙧᡂࡍࡿὶࢀሙࡀ⏕ࡌࡿࠋὶධ㢼㏿ẚࡣ

⛬ᗘ࡜࡞ࡿࠋ

ࠉ▐᫬ᐊෆእ㢼㏿ẚศᕸ࡛ࡣࠊ)LJD ࡟࠾࠸࡚ࡣ㛤ཱྀϸ࠿ࡽ㢼㏿

ẚ ⛬ᗘ࡛㹷ṇ᪉ྥ࡬ὶධࡋ࡚࠸ࡿࡀࠊ)LJE ࡛ࡣ㛤ཱྀϸ࠿ࡽ

)LJ'LVWULEXWLRQRIDLU㸛RZZLQGVSHHGUDWLRYHFWRUVE\/(6&DVH+RUL]RQWDOVHFWLRQ 㸦E'LVWULEXWLRQRILQVWDQWDQHRXV

YHORFLW\YHFWRUVW >V@

㸦F'LVWULEXWLRQRIWLPHDYHUDJHG YHORFLW\YHFWRUV

㸦D'LVWULEXWLRQRILQVWDQWDQHRXVYHORFLW\

YHFWRUVW >V@

㼃㼕㼚㼐㻌㼐㼕㼞㼑㼏㼠㼕㼛㼚䡔

䡕 :LQGVSHHGUDWLR

LQVLGH

RXWVLGH 㼃㼕㼚㼐㻌㼐㼕㼞㼑㼏㼠㼕㼛㼚

䡔

䡕 :LQGVSHHGUDWLR

LQVLGH

RXWVLGH

䡕 :LQGVSHHGUDWLR

LQVLGH

RXWVLGH

)LJ&RPSDULVRQRIGLVWULEXWLRQRIWLPHDYHUDJHGZLQGVSHHGUDWLRYHFWRUV&DVH9HUWLFDOVHFWLRQ D'LVWULEXWLRQRIYHORFLW\YHFWRUVE\ZLQGWXQQHO

H[SHULPHQWXVLQJSDUWLFOHLPDJHYHORFLPHWU\3,9

:LQGVSHHGUDWLR

LQVLGH

RXWVLGH [

z

Wind direction

E'LVWULEXWLRQRIYHORFLW\YHFWRUVXVLQJ/(6

:LQGVSHHGUDWLR

LQVLGH

RXWVLGH [

z

Wind direction

)LJ'LVWULEXWLRQRIDLU㸛RZZLQGVSHHGUDWLRYHFWRUVE\/(6&DVH+RUL]RQWDOVHFWLRQ 㸦D'LVWULEXWLRQRILQVWDQWDQHRXVYHORFLW\

YHFWRUVW >V@

㸦E'LVWULEXWLRQRILQVWDQWDQHRXV YHORFLW\YHFWRUVW >V@

㸦F'LVWULEXWLRQRIWLPHDYHUDJHG YHORFLW\YHFWRUV

䡕 :LQGVSHHGUDWLR

LQVLGH

RXWVLGH

䡕 :LQGVSHHGUDWLR

LQVLGH

RXWVLGH

䡕 :LQGVSHHGUDWLR

LQVLGH

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(5)

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᫬ⓗ࡟㹷᪉ྥ࡟᣺ືࡋ࡞ࡀࡽὶධࡋ࡚࠸ࡿࠋཪࠊὶධࡋࡓẼὶࡣᐊ ෆ㢼ୗഃ㝮ゅ㒊࡛ ࢆ⏕ࡌࡉࡏࡿࠋࣔࢹࣝ࿘㎶࡛ࡣእቨഃ㠃௜㏆࡛

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ࢀሙ࡜࡞ࡿࠋ

ࠉ▐᫬ᐊෆእ㢼㏿ẚศᕸࡣࠊ)LJD ࡛ࡣᅗୗ㒊࡟఩⨨ࡍࡿ㛤ཱྀ

ϸ࠿ࡽ㢼㏿ẚ ⛬ᗘ࡛Ẽὶࡀᐊෆ࡬ὶධࡋ࡚࠸ࡿࠋࡑࢀ࡟ᑐࡋࠊ )LJE ࡛ࡣᅗୖ㒊࡟఩⨨ࡍࡿ㛤ཱྀϹ࠿ࡽ㢼㏿ẚ ⛬ᗘ࡛ὶධࡋ

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࡛ࡣ &DVH ࡜ྠᵝ࡟እቨഃ㠃௜㏆࡛๤㞳ὶࡀ⏕ࡌࠊ ㏫ὶࡀ⏕ࡌ࡚࠸ࡿࠋ ࠉ㢼ୖഃቨ㠃࡟ᑐ⛠࡟㸰㛤ཱྀࢆ᭷ࡍࡿሙྜ &DVH

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ୗࡢὶࢀሙ࡜࡞ࡿࠋ

ࠉ▐᫬ᐊෆእ㢼㏿ẚศᕸࡣࠊ)LJD ࡛ࡣ㢼ྥ࡟ྥ࠿ࡗ࡚ྑഃ࡟఩

⨨ࡍࡿ㛤ཱྀϹ࠿ࡽ㢼㏿ẚ ⛬ᗘ࡛Ẽὶࡀὶධࡋ࡚࠸ࡿࠋࡑࢀ࡟ᑐࡋࠊ )LJE ࡛ࡣ㢼ྥ࡟ྥ࠿ࡗ࡚ᕥഃ࡟఩⨨ࡍࡿ㛤ཱྀϸ࠿ࡽ㢼㏿ẚ

⛬ᗘ࡛ὶධࡋ࡚࠾ࡾࠊ㛤ཱྀϸ࡜㛤ཱྀϹ࡟஺஫࡟Ẽὶࡀὶධࡍࡿࠋཪࠊ ὶධࡋࡓẼὶࡣᐊෆ㢼ୗഃ㝮ゅ㒊࡛ ࢆ⏕ࡌࡉࡏ࡚࠸ࡿࠋࣔࢹࣝ࿘

㎶࡛ࡣࠊ&DVH ࡜ྠᵝ࡟እቨഃ㠃௜㏆࡛๤㞳ὶࡀ⏕ࡌࠊ㏫ὶࡀ⏕ࡌ

࡚࠸ࡿࠋ

ࠉ㢼ୗഃቨ㠃࡟ᑐ⛠࡟㸰㛤ཱྀࢆ᭷ࡍࡿሙྜ &DVH

ࠉ)LJF ࡢᖹᆒᐊෆእ㢼㏿ẚศᕸ࡛ࡣࣔࢹࣝᐊෆ࡟ẼὶࡣṤ࡝ὶ

ධࡋ࡞࠸ࠋᐊෆ㢼㏿ẚศᕸ࡛ࡣ &DVH ࡜ྠᵝ࡟ᴫࡡ㢼㏿ẚ ௨

ୗࡢὶࢀሙ࡜࡞ࡿࠋ

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㒊࡟఩⨨ࡍࡿ㛤ཱྀϹ࠿ࡽ㢼㏿ẚ ⛬ᗘ࡛ὶධࡋ࡚࠾ࡾࠊ㛤ཱྀϸ࡜

㛤ཱྀϹ࡟஺஫࡟Ẽὶࡀὶධࡍࡿࠋࣔࢹࣝ࿘㎶࡛ࡣእቨഃ㠃௜㏆࡛๤

㞳ὶࡀ⏕ࡌࠊ㏫ὶࡀ⏕ࡌ࡚࠸ࡿࠋ

ࠉ㢼ྥ࡟ᑐࡋᖹ⾜࡞㸯ࡘࡢቨ㠃࡟㛤ཱྀࢆ㸰⟠ᡤ᭷ࡍࡿሙྜ &DVH ࠉ)LJE ࡢᖹᆒᐊෆእ㢼㏿ẚศᕸ࡛ࡣࠊ㢼ྥ࡟ᑐࡋ࡚ᖹ⾜࡞㸯ቨ 㠃ࡢ㢼ୖࠊ㢼ୗ࡟タࡅࡓ㸰⟠ᡤࡢ㛤ཱྀࡢෆࠊ㢼ୗഃࡢ㛤ཱྀϹ࠿ࡽ㢼

㏿ẚ ⛬ᗘ࡛Ẽὶࡀὶධࡋࠊࣔࢹࣝෆ㒊ࢆᚠ⎔ࡍࡿὶࢀሙࢆᙧᡂ ࡍࡿࠋ)LJD ࡛ࡣ▐᫬ὶධ㢼㏿ẚࡣ ⛬ᗘ࡛࠶ࡾࠊẼὶࡣ㛤ཱྀ

㒊ࡀᏑᅾࡍࡿෆቨ㠃࡟ἢࡗ࡚ὶධࡍࡿࠋࣔࢹࣝෆ㒊࡛ࡣᐊෆ඲య࡛

」㞧࡞Ẽὶሙࢆᙧᡂࡍࡿࠋࣔࢹࣝ࿘㎶࡛ࡣࠊእቨഃ㠃௜㏆࡛๤㞳ὶ ࡀ⏕ࡌࠊ㏫ὶࡀ⏕ࡌ࡚࠸ࡿࠋ

ࠉ᫬㛫ᖹᆒ໬ࡋࡓ㢼㏿ศᕸ࡟ࡼࡿᐊෆὶධ㔞࡜▐᫬㢼㏿ศᕸ࡟ࡼ

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ࡼࡿ᫬㛫ᖹᆒᇶ‽໬ᐊෆὶධ㔞

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ࢡࢺࣝศᕸࢆᑐ㇟࡟ྛ㛤ཱྀ࡟࠾࠸࡚㛤ཱྀ㠃ἲ⥺᪉ྥࡢᐊෆὶධ᪉ྥ

ᡂศࡢ㢼㏿ࢆᢳฟࡋࠊᐊෆὶධ㔞ࢆ⟬ฟࡋࡓ್࡛࠶ࡿࠋ୍᪉ࠊ▐᫬

㢼㏿ศᕸ࡟ࡼࡿ᫬㛫ᖹᆒᐊෆὶධ㔞ࡣࠊྛ᫬้ࡢ▐᫬㢼㏿࣋ࢡࢺࣝ

ศᕸࢆᑐ㇟࡟ྛ㛤ཱྀ࡟࠾࠸࡚㛤ཱྀ㠃ἲ⥺᪉ྥࡢᐊෆὶධ᪉ྥᡂศࡢ 㢼㏿ࢆᢳฟࡋ࡚▐᫬ᐊෆὶධ㔞ࢆ⟬ฟࡋࡓᚋࠊ᫬㛫ᖹᆒ໬ࢆ᪋ࡋࡓ

್࡛࠶ࡿࠋᑦࠊ7DEOH ࡣࣔࢹࣝ㌺㧗࡟࠾ࡅࡿ࢔ࣉ࣮ࣟࢳࣇ࣮ࣟࡢὶ

㏿ PV㸸ᇶ‽㧗ࡉ ੈ ࡜ࣔࢹࣝ㛤ཱྀ㠃✚ ੈ ੈ

࡟ࡼࡾࠊᇶ‽ὶ㔞ࢆ 㸻 >P

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ྛὶධ㔞ࢆ㝖ࡍࡇ࡜࡛ᇶ‽໬ࡋ࡚♧ࡍࠋ

ࠉ᫬㛫ᖹᆒⓗ࡟ࡶ㏻㢼࡟ࡼࡾὶධẼὶࡀ⏕ࡌࠊ᫂☜࡞ᐊෆẼὶศᕸ ࡀᙧᡂࡉࢀࡿ &DVH ࡛ࡣ᫬㛫ᖹᆒ໬ࡋࡓ㢼㏿ศᕸ࡟ࡼࡿᐊෆὶධ㔞

࡜▐᫬㢼㏿ศᕸ࡟ࡼࡿ᫬㛫ᖹᆒᐊෆὶධ㔞ࡀ࡯ࡰ୍⮴ࡍࡿࠋ୍᪉ࠊ

᫬㛫ᖹᆒⓗ࡟ࡣὶධẼὶࡀṤ࡝ほᐹࡉࢀ࡞࠸ &DVHࠊࠊ ࡛ࡣࠊ▐

᫬㢼㏿ศᕸ࡟ࡼࡿ᫬㛫ᖹᆒᐊෆὶධ㔞ࡣᖹᆒ㢼㏿ศᕸ࡟ࡼࡿᐊෆὶ ධ㔞࡟ᑐࡋ࡚ࠊ&DVH ࡛ࡣ⣙㸵ಸࠊ&DVH ࡛ࡣ⣙ ಸࠊ&DVH ࡛ࡣ⣙

㸳ಸ࡜࡞ࡿࠋཪࠊ㏻㢼ࡀᚓ࡟ࡃ࠸㛤ཱྀ᮲௳࡛࠶ࡿࡀࠊ᫬㛫ᖹᆒⓗ࡟

ࡶὶධẼὶࡀほᐹࡉࢀࡿ &DVH ࡛ࡣ⣙ ಸ࡜࡞ࡿࠋእ㒊㢼ࡢ㢼㏿

ኚື࡟ࡼࡗ࡚㏻㢼ࡀ⏕ࡌࡿ㛤ཱྀ᮲௳ࡢୗ࡛ࡣࠊ᫬㛫ᖹᆒⓗ࡞ゎᯒ࡟

ࡼࡿ᥮Ẽ࣭㏻㢼㔞ࡢ⟬ฟࢆ⾜ࡗࡓሙྜࠊᐇ㝿ࡢ㏻㢼⌧㇟࡟ࡼࡗ࡚ᚓ

ࡽࢀࡿ㏻㢼㔞࡜ẚ㍑ࡋ࡚኱ࡁࡃ㐣ᑠホ౯ࡉࢀࡿ࡜⪃࠼ࡽࢀࡿࠋ ࠉ㛤ཱྀ㛫ࡢᖹᆒ↓ḟඖ㟼ᅽᕪཬࡧ㛤ཱྀ㠃ᖹᆒ㢼㏿ẚࡢὶධ᪉ྥᡂ ศࡢ᫬⣔ิኚ໬

ࠉ)LJD 㹼 H ࡟ࠊࡑࢀࡒࢀ &DVH 㹼 ࡢ㛤ཱྀ㛫ࡢᖹᆒ↓ḟඖ㟼 ᅽᕪ

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࡛✵㛫ᖹᆒࡋࡓ್

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࡛࠶ࡿࠋ㢼㏿ẚࡣὶධ᪉ྥࢆṇ࡜ࡋ࡚⾲♧ࡍࡿࠋ

&DVHࠊࠊ ࡣࠊ㢼ྥ࡟ᑐࡋ࡚ᑐ⛠࡞఩⨨࡟㛤ཱྀࢆタ⨨ࡋ࡚࠾ࡾࠊ᫬

㛫ᖹᆒⓗ࡟ࡣ㏻㢼ࡀᚓࡽࢀ࡞࠸㛤ཱྀ᮲௳࡛࠶ࡿࠋ

ࠉ&DVHࠊࠊ ࡛ࡣ⤯࠼ࡎ▐㛫ⓗ࡟ኚ໬ࡍࡿእ㒊㢼㏿ࡢᙳ㡪࡟ࡼ

ࡾࠊ㛤ཱྀ㛫࡟▐᫬ⓗ࡞↓ḟඖ㟼ᅽᕪࡀ⏕ࡌࡿࠋཪࠊ↓ḟඖ㟼ᅽᕪࡣ 㠀ᐃᖖⓗ࡟ṇ㈇ࡀኚ໬ࡋ࡚࠾ࡾࠊ&DVH ࡛ࡣᴫࡡ㸩㹼㸫 ࠊ

&DVH ࡛ࡣᴫࡡ㸩㹼㸫 ࡜࡞ࡿࠋ&DVH ࡛ࡣ &DVHࠊ ࡜ẚ㍑

ࡋ࡚↓ḟඖ㟼ᅽᕪࡀ᫬㛫ⓗ࡟኱ࡁࡃኚ໬ࡋࠊ᭱኱࡛⣙㸩㹼㸫

࡜࡞ࡿࠋ&DVH ࡛ࡣࠊ ᴫࡡ㈇ࡢ↓ḟඖ㟼ᅽᕪ࡛⣙㸫㹼㸫 ࡜࡞ࡗ

࡚࠸ࡿࠋࡇࢀࡣ㢼ୗഃ㛤ཱྀ㸦㛤ཱྀϹ㸧ࡢ᪉ࡀ㢼ୖഃ㛤ཱྀ㸦㛤ཱྀ L㸧࡜

ẚ㍑ࡋ࡚࡯ࡰᐃᖖⓗ࡟ṇࡢ↓ḟඖ㟼ᅽ࡜࡞ࡿࡓࡵ࡛࠶ࡿࠋ

ࠉ㢼㏿ẚࡢὶධ᪉ྥᡂศ࡟࠾࠸࡚ࡣࠊ&DVH ࡛ࡣẼὶࡣ㢼㏿ẚ ⛬ ᗘ࡛㢼ୖഃ㛤ཱྀ࠿ࡽᐃᖖⓗ࡟ὶධࡋࠊὶධ࣭ὶฟ㛤ཱྀࡀኚ໬ࡋ࡚࠸

࡞࠸ࡇ࡜ࡀࢃ࠿ࡿࠋ&DVHࠊࠊ ࡟࠾࠸࡚ࡣࠊᴫࡡ㸩㹼㸫 ࡛ ኚ໬ࡋࠊ㠀ᐃᖖⓗ࡟ὶධ᪉ྥ㢼㏿ᡂศࡢṇ㈇ࡀධࢀ᭰ࢃࡾࠊὶධ࣭

ὶฟ㛤ཱྀࡢ㛵ಀࡀኚ໬ࡋ࡚࠸ࡿࠋ&DVH ࡛ࡣ↓ḟඖ㟼ᅽᕪ࡛ࡣ௚ࡢ

&DVH ࡜ẚ㍑ࡋ࡚኱ࡁ࠸ࡶࡢࡢࠊὶධ᪉ྥ㢼㏿ᡂศ࡛ࡣ௚ࡢ &DVH ࡜࡯

ࡰྠᵝࡢ್࡜࡞ࡗ࡚࠸ࡿࠋ&DVH ࡛ࡣࠊ&DVH ࡜ẚ㍑ࡋ࡚ὶධ㢼㏿ẚ

࡟᫬㛫ⓗኚ໬ࡀ࠶ࡿࡀࠊᴫࡡ㛤ཱྀϹ࠿ࡽ᭱኱࡛㢼㏿ẚ ⛬ᗘ࡛ὶ ධࡋࠊ㛤ཱྀ L ࠿ࡽὶฟࡍࡿࠋ

ࠉ/(6 ࢆ⏝࠸ࡿࡇ࡜࡛ࠊᐃᖖⓗ࡟ࡣ㏻㢼ࢆᚓࡽࢀ࡞࠸㛤ཱྀ᮲௳࡛࠶ࡗ

࡚ࡶࠊ▐᫬ⓗ࡞ᅽຊᕪ࡟㉳ᅉࡍࡿ㏻㢼⌧㇟ࢆ෌⌧࡛ࡁࡿࠋ

ࠉࡲ࡜ࡵ

ࠉᮏሗ࡛ࡣ /(6 ゎᯒࢆ⏝࠸࡚㢼Ὕᐇ㦂ࢆᶍᨃࡋࡓ༢⣧ఫᏯࣔࢹࣝࡢᐊ ෆእ㏻㢼ᛶ≧ࡢゎᯒࢆ⾜ࡗࡓࠋ᭦࡟᫬㛫ᖹᆒⓗ࡟ࡣ㛤ཱྀ㛫࡟ᅽຊᕪࡀ

⏕ࡌࡎࠊ㏻㢼ࡀᚓ࡟ࡃ࠸࡜ࡉࢀࡿ㛤ཱྀ᮲௳ࢆྵࢇࡔ㸳ࣃࢱ࣮ࣥఫᏯࣔ

ࢹࣝࢆᑐ㇟࡜ࡋࡓゎᯒࢆ⾜࠸ࠊእ㒊㢼ࡢ㢼㏿ኚື࡟ࡼࡗ࡚▐᫬ⓗ࡟⏕

ࡌࡿ㛤ཱྀ㛫ࡢᅽຊᕪ࡟ࡼࡿ㏻㢼ᛶ≧ࡢᢕᥱ᳨࣭ウࢆ⾜ࡗࡓࠋ㏻㢼Ẽὶ ᛶ≧ࡣ㢼Ὕᐇ㦂⤖ᯝ࡜ᐃᛶⓗ࡟ᴫࡡ୍⮴ࡋ࡚࠾ࡾࠊẼὶࡢᇶᮏⓗ࡞ᵓ 㐀ࡣ෌⌧࡛ࡁ࡚࠸ࡿࡓࡵࠊ/(6 ゎᯒ࡟ࡼࡾ㏻㢼ᛶ⬟ホ౯ᑐ㇟࡜ࡍࡿ㢼Ὕ ᐇ㦂ࡢ෌⌧ࡀฟ᮶ࡓ࡜⪃࠼ࡽࢀࡿࠋ௨ୗࡀᮏሗ࡛ᚓࡽࢀࡓ▱ぢ࡛࠶ࡿࠋ ձ &DVH ࡛ࡣᐃᖖⓗ࡟㢼ୖഃࡢ㛤ཱྀϸ࠿ࡽ㢼㏿ẚ ⛬ᗘ࡛ὶධࡋࠊ 㢼ୗഃࡢ㛤ཱྀϹ࠿ࡽὶฟࡍࡿࠋ᫬㛫ᖹᆒⓗ࡟ࡣ㢼ୖഃ㛤ཱྀ࠿ࡽ㢼

ୗഃ㛤ཱྀࡲ࡛┤⥺ⓗ࡞ὶࢀሙࡀ⏕ࡌ࡚࠸ࡿࡀࠊ▐᫬ⓗ࡟ࡣ㹷᪉ྥ

࡟᣺ືࡋ࡞ࡀࡽὶධࡍࡿࠋ

ղ &DVH ࡛ࡣ᫬㛫ᖹᆒⓗ࡟ࡣࣔࢹࣝᐊෆ࡟ẼὶࡣṤ࡝ὶධࡋ࡞࠸ࠋ

▐᫬ⓗ࡟㛤ཱྀϸ࡜㛤ཱྀϹ࡟ࡣ᭱኱࡛⣙ ࡢ↓ḟඖ㟼ᅽᕪࡀ⏕ࡌ

ࡿࠋ▐᫬ὶධẼὶࡣ᭱኱࡛㢼㏿ẚ ⛬ᗘ࡜࡞ࡾࠊὶධ࣭ὶฟ㛤

ཱྀࡀ㠀ᐃᖖⓗ࡟ኚ໬ࡍࡿࠋ

ճ &DVH ࡛ࡣ᫬㛫ᖹᆒⓗ࡟ࡣࣔࢹࣝᐊෆ࡟ẼὶࡣṤ࡝ὶධࡋ࡞࠸ࠋ 㛤ཱྀϸ࡜㛤ཱྀϹ࡟ࡣ &DVHࠊ ࡜ẚ㍑ࡋ࡚኱ࡁࡃࠊ▐᫬ⓗ࡟᭱኱⣙

ࡢ↓ḟඖ㟼ᅽᕪࡀ⏕ࡌࡿࠋࡋ࠿ࡋࠊ▐᫬ὶධẼὶࡢ㢼㏿ẚࡣ

&DVHࠊ ࡜࡯ࡰྠᵝ࡟᭱኱࡛㢼㏿ẚ ⛬ᗘ࡜࡞ࡿࠋὶධ࣭ὶฟ 㛤ཱྀࡣ㠀ᐃᖖⓗ࡟ኚ໬ࡍࡿࠋཪࠊὶධࡋࡓẼὶࡣᐊෆ㢼ୗഃ㝮ゅ㒊࡛ ࢆ⏕ࡌࡉࡏ࡚࠸ࡿࠋ

մ &DVH ࡛ࡣ᫬㛫ᖹᆒⓗ࡟ࡣࣔࢹࣝᐊෆ࡟ẼὶࡣṤ࡝ὶධࡋ࡞࠸ࠋ

▐᫬ⓗ࡟㛤ཱྀϸ࡜㛤ཱྀϹ࡟ࡣ᭱኱࡛⣙ ࡢ↓ḟඖ㟼ᅽᕪࡀ⏕ࡌ

ࡿࠋ▐᫬ὶධẼὶࡣ᭱኱࡛㢼㏿ẚ ⛬ᗘ࡜࡞ࡾࠊὶධ࣭ὶฟ㛤

ཱྀࡣ㠀ᐃᖖⓗ࡟ኚ໬ࡍࡿࠋ

յ &DVH ࡛ࡣᐃᖖⓗ࡟㛤ཱྀ㛫ࡢ↓ḟඖ㟼ᅽᕪࡀ ⛬ᗘ࡜࡞ࡾࠊὶ ධ࣭ὶฟ㛤ཱྀࡣṤ࡝ኚ໬ࡋ࡞࠸ࠋẼὶࡣ㢼ୗഃࡢ㛤ཱྀϹ࠿ࡽὶධࡋࠊ

▐᫬ὶධẼὶࡣ᭱኱࡛㢼㏿ẚ ⛬ᗘ࡜࡞ࡿࠋὶධࡋࡓẼὶࡣࣔࢹ

ࣝෆ㒊࡛ᚠ⎔ࡍࡿὶࢀሙࢆᙧᡂࡋࠊ㢼ୖഃࡢ㛤ཱྀ L ࠿ࡽὶฟࡍࡿࠋ ն▐᫬㢼㏿ศᕸ࡟ࡼࡿ᫬㛫ᖹᆒᐊෆὶධ㔞ࡣ᫬㛫ᖹᆒ໬ࡋࡓ㢼㏿ศ ᕸ࡟ࡼࡿᐊෆὶධ㔞࡟ᑐࡋ࡚ࠊ&DVH ࡛ࡣ࡯ࡰ୍⮴ࡍࡿࡀࠊ&DVH

࡛ࡣ⣙㸵ಸࠊ &DVH ࡛ࡣ⣙ ಸࠊ &DVH ࡛ࡣ⣙㸳ಸࠊ &DVH ࡛ࡣ⣙

ಸࡢᕪࡀ⏕ࡌࡿࠋ

(8)

௒ᚋࡢᒎᮃ

ࠉᐊෆ᥮Ẽᛶ⬟ࢆホ౯ࡍࡿᣦᶆ࡟✵Ẽ㱋ࡸ✵Ẽవ࿨➼

^ࠊ㸧

ࡀ࠶

ࡿࠋࡇࢀࡽࡢ᥮Ẽᛶ⬟ホ౯ᣦᶆࡣࠊὶධ✵ẼࡀᐊෆࡢྛⅬ࡟⮳ࡿࡲ

࡛ࡢ↓ᩘࡢὶ⟶ࡢ࢔ࣥࢧࣥࣈࣝᖹᆒ࡟ࡼࡾࣔࢹࣝ໬ࡉࢀ࡚࠸ࡿࠋࡋ

࠿ࡋᮏሗࡢ &DVHࠊࠊ ࡞࡝ࡢ᫬㛫ⓗ࡟ὶධ࣭ὶฟ㛤ཱྀࡢ఩⨨㛵ಀ ࡀኚ໬ࡋࠊὶࢀࡢᵓ㐀ࡀ᫬㛫ⓗ࡟኱ࡁࡃኚ໬ࡍࡿὶࢀሙ࡛ࡣࠊ✵Ẽ 㱋➼ࡢ⃰ᗘᛂ⟅ࡢ᫬㛫✚ศ࡟ᇶ࡙ࡃ᥮Ẽᛶ⬟ホ౯ᣦᶆ࡟ࡼࡿホ౯ ࡀᅔ㞴࡜⪃࠼ࡽࢀࡿࠋ୍᪉ࠊởᰁ㉁㝖ཤຠ⋡࡞࡝ࡢ⃰ᗘศᕸ࡟ᇶ

࡙ࡃ᥮Ẽᛶ⬟ホ౯᪉ἲࢆ⏝࠸ࡓሙྜࠊ&DVHࠊࠊ ࡟࠾࠸࡚ࡣ㛤ཱྀ

࠿ࡽ㞳ࢀࡓᒁᡤ㡿ᇦ࡛ࢺ࣮ࣞࢧ ởᰁ㉁➼ ࢆⓎ⏕ࡉࡏࠊࡑࡢ㝖ཤ

ຠ⋡ࢆồࡵࡿࡇ࡜࡟ࡼࡾࠊὶධẼὶࡀࢩ࣮ࣙࢺࢧ࣮࢟ࢵࢺࡋ࡚༑ศ

࡟ᐊෆ࡟฿㐩ࡋ࡞࠸ሙྜࢆ⪃៖ࡋࡓ᥮Ẽᛶ⬟ホ౯ࢆ⾜࠺ࡇ࡜ࡀྍ⬟

࡛࠶ࡿ࡜⪃࠼ࡽࢀࡿࠋࡋ࠿ࡋࠊ&DVH ࡢሙྜࠊởᰁ㉁㝖ཤຠ⋡࡟ࡼ

ࡿ᥮Ẽᛶ⬟ホ౯᪉ἲ࡛ࡣࠊᐊෆ࡟ởᰁ㉁ࢆ୍ᵝⓎ⏕ࡉࡏࡓሙྜࡶࠊ ᒁᡤ㡿ᇦࢆタᐃࡋ࡚ởᰁ㉁ࢆⓎ⏕ࡉࡏࡓሙྜࡶࠊྛ㛤ཱྀ࠿ࡽὶධࡋ ࡓẼὶࡀᒁᡤ㡿ᇦ࡟฿㐩ࡏࡎ࡟ࢩ࣮ࣙࢺࢧ࣮࢟ࢵࢺࢆᙧᡂࡋ࡚ὶ ฟࡍࡿẼὶࡢ๭ྜࢆ⟬ฟࡍࡿࡇ࡜ࡀᅔ㞴࡜⪃࠼ࡽࢀࡿࠋ)LJ ࡟

&DVH ࡟࠾ࡅࡿởᰁ㉁㝖ཤຠ⋡ࢆ⏝࠸ࡓ㏻㢼ᛶ⬟ホ౯ࡢၥ㢟Ⅼࢆ♧

ࡍࠋࡇࢀࡣ &DVH ࡢሙྜࠊὶධẼὶࡢ฿㐩῝ᗘࡢุᐃ᪉ྥࡀẼὶࡢ ὶධࡋࡓ㛤ཱྀ࡟ࡼࡗ࡚␗࡞ࡿࡓࡵࠊὶධ㛤ูཱྀ࡟ࢩ࣮ࣙࢺࢧ࣮࢟ࢵ

ࢺࢆุ᩿࡛ࡁࡿ఩⨨࡟ởᰁ㉁Ⓨ⏕㡿ᇦࢆタᐃࡍࡿࡇ࡜ࡀᅔ㞴࡞ࡓࡵ

࡛࠶ࡿࠋࡇࡢࡓࡵࠊࡇࡢࡼ࠺࡞㛤ཱྀ᮲௳࡟ࡶ㐺⏝ྍ⬟࡞㏻㢼ࡢ᫬㛫

ⓗኚືࢆ⪃៖ࡋࡓ᪂ࡓ࡞⮬↛᥮Ẽ࣭㏻㢼ᛶ⬟ホ౯ᡭἲࢆ㛤Ⓨࡍࡿᚲ せࡀ࠶ࡿࠋ

ࠉ)LJ ࡟᪂ࡓ࡟ᥦ᱌ࡍࡿ㢼㏿ኚືࢆ⪃៖ࡋࡓ⮬↛᥮Ẽ࣭㏻㢼ᛶ⬟

ホ౯ᡭἲࡢᴫᛕࢆ♧ࡍࠋ᪂ࡓ࡞ホ౯ᡭἲ࡜ࡋ࡚ࡣࠊ౛࠼ࡤࠊ᪂㩭✵Ẽ ࡢ฿㐩῝ᗘࢆᛕ㢌࡟ᐊෆ࡟௬᝿ࡢ㡿ᇦ࡜ࡋ࡚᥮Ẽᛶ⬟ホ౯㡿ᇦࢆᐃ⩏

ࡋࠊ㛤ཱྀ㒊࠿ࡽࡢὶධẼὶ࡟㏣ᚑࡍࡿ㔜ࡉ࣭኱ࡁࡉࡢ࡞࠸⢏Ꮚࢆከ᫬

้࡟Ώࡗ࡚㛤ཱྀ㠃ୖࡢከᩘࡢ఩⨨࡛ᩓᕸࡋࠊ⢏Ꮚࡢ఩⨨ࢆ㏣㊧ࡍࡿࡇ

࡜࡛ᩓᕸࡋࡓ⢏Ꮚࡢᐊෆὶධ⢏Ꮚᩘ࡟ᑐࡍࡿホ౯㡿ᇦ࡟฿㐩ࡋࡓ⢏Ꮚ

ᩘࡢ๭ྜ࡟ࡼࡾ᪂㩭✵Ẽࡢෆࠊᐊෆࡢ᥮Ẽ࡟ᐤ୚ࡍࡿ✵Ẽ㔞ࢆ⟬ฟࡍ

ࡿᡭἲࡀ⪃࠼ࡽࢀࡿࠋᮏሗࡢ ࡛⟬ฟࡋࡓ㸰✀㢮ࡢ᥮Ẽ㔞ࡣ࡝ࡕࡽ

ࡶ㛤ཱྀ㠃ࡢὶධὶ㏿࡟ࡼࡾ⟬ฟࡋࡓᐊෆὶධ㔞࡛࠶ࡾࠊᐊෆ࡛࡝ࡢࡼ

࠺࡞᥮Ẽ⤒㊰ࡀᙧᡂࡉࢀࡿ࠿ࡣ⪃៖ࡋ࡚࠸࡞࠸ࠋ᪂ࡓ࡞ホ౯ᡭἲ࡛

ࡣࠊὶධࡋࡓ✵Ẽࡀ༑ศ࡟᥮Ẽ࡟ᐤ୚ࡏࡎ࡟㛤ཱྀ࠿ࡽὶฟࡍࡿࢩ࣮ࣙ

ࢺࢧ࣮࢟ࢵࢺࢆ⪃៖ࡋࠊ⢏Ꮚ㏣㊧࡟ࡼࡗ࡚ᐊෆ࡟ὶධࡋࡓ✵Ẽ㔞ࡢෆࠊ ᐊෆࡢ᥮Ẽ࡟ᐤ୚ࡋࡓẚ⋡ࢆ⟬ฟࡋ࡚⮬↛᥮Ẽ࣭㏻㢼㔞ࡢホ౯ࢆ⾜࠺ࠋ ࡇࡢホ౯ᡭἲ࡟ࡘ࠸࡚ࡣࠊḟሗ ࡑࡢ㸰 ࡛ሗ࿌ࡍࡿࠋ

ࠉᑦࠊᮏㄽᩥ࡟㛵ࡍࡿ /(6 ゎᯒ࡟ࡼࡗ࡚ᚓࡽࢀࡓ᫬⣔ิᐊෆእ▐᫬

㢼㏿ศᕸࡣࠊᮏ✏ᮎᑿ࡟グ㍕ࡍࡿ 85/ ࠿ࡽື⏬࡜ࡋ࡚ཧ↷࡛ࡁࡿࠋ

ཧ⪃ᩥ⊩

ࠉᑠᯘ▱ᗈ㸪┦Ⰻ࿴ఙ㸪ᒣ୰ಇኵ㸪⏥㇂ᑑྐ㸪Ṋ⏣ᑦ࿃㸪すᮏ┿㐨㏻㢼᫬

ࡢᘓ≀࿘㎶Ẽὶ࡟㛵ࡍࡿ㢼Ὕᐇ㦂ཬࡧ &)' ゎᯒ⢭ᗘࡢ᳨ド㸪᪥ᮏᘓ⠏Ꮫ఍⎔

ቃ⣔ㄽᩥ㞟㸪1R㸪SS㸪

ࠉᚋ⸨కᘏ㸪኱ሙṇ᫛㸪಴ῲ㝯㸪㐲⸨ᬛ⾜㸪㉥ᕊ჆ᙪ㸪㔝୰ಇᏹ㸪ሯᮏ೺

஧ ὶฟ㛤ཱྀ㒊࡬ࡢᒁᡤ┦ఝࣔࢹࣝࡢ㐺⏝࡟㛵ࡍࡿ᳨ウࠉ㏻㢼᫬ࡢ᥮Ẽ㔞ண ἲ࡟㛵ࡍࡿ◊✲ ➨㸱ሗ㸪᪥ᮏᘓ⠏Ꮫ఍⎔ቃ⣔ㄽᩥ㞟㸪1R㸪SS 㸪

ࠉす⃝⦾Ẏ㸪⧙ෆṇ㐨㸪⩚ᒣᗈᩥ㸪᳃ኴ㑻 ὶࢀࡢ᫬㛫ࢫࢣ࣮ࣝࢆ⪃៖ࡋࡓ

᥮Ẽ࣭㏻㢼✵㛫ࡢࡴࡽࡢホ౯ᣦᶆ࡜࣐ࢡࣟࣔࢹࣝ࡬ࡢᒎ㛤㸪᪥ᮏᘓ⠏Ꮫ఍⎔

ቃ⣔ㄽᩥ㞟㸪1R㸪SS㸪

㸧 ࠉబ⸨㚷㢼ྥ࡟ᑐࡋྠ୍ഃࡢ஧㛤ཱྀ㒊࡟ࡼࡿ᥮Ẽ㍯㐨࡟ࡘ࠸࡚ ᘓ⠏Ꮫ఍

ㄽᩥ㞟 1RSS

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(1)(2)

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(5)

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[m/s]

, , [m/s]

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, , [m/s]

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m: Mesh number at opening

: Time-averaged flow rate at opening [m

³

/h]

: Instantaneous flow rate at each mesh [m

³

/h]

: Instantaneous wind velocity at each mesh [m/s]

A

_m

: Mesh area at opening [m

²

] A: Opening area [m

²

] T: Averaging time [s]

t: Calculation time [s]

(14) (15) (16)

(10)

SIMPLE HOUSE MODEL CONSIDERING FLOW FLUCTUATION Study on naturally cross-ventilated house using large-eddy simulation(LES) part 1

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ANALYSIS OF CROSS VENTILATION AIRFLOW IN AND AROUND SIMPLE HOUSE MODEL CONSIDERING FLOW FLUCTUATION Study on naturally cross-ventilated house using large-eddy simulation(LES) part 1

Yasuo TAKANO

^＊

, Shin-ichi AKABAYASHI

^＊＊

, Yoshihide TOMINAGA

^＊＊＊

, Jun SAKAGUCHI

^＊＊＊＊

, Miho HONDA

^{＊＊＊＊＊}

and Yuki ARINAMI

^＊

＊

Grad. Stud., Graduate School of Science and Technology, Niigata University, M. Eng.

＊＊

Prof., Graduate School of Science and Technology, Niigata University, Dr. Eng.

＊＊＊

Prof., Dept. of Architecture and Building Engineering, Niigata Institute of Technology, Dr. Eng.

＊＊＊＊

Prof., Faculty of International Studies and Regional Development, Department of International Studies and Regional Development, University of Niigata Prefecture, Dr. Eng.

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Japan Railway Construction, Transport and Technology Agency, M. Eng.

(Former Grad. Stud., Graduate School of Science and Technology, Niigata University)

（2015 年 1 月 9 日原稿受理，2015 年 6 月 22 日採用決定）

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