ࣁࢻࣟࣜࢵࢡᆺ࣊ࢵࢻ࣎ࢵࢡࢫࡢศᩓ㒊
࠾ࡅࡿὶࢀ≉ᛶ
Flow Characteristics in the Dispersion Section of a Hydraulic Headbox
◊✲௦⾲⪅ ᕤᏛ㒊ᶵᲔᕤᏛ⛉ ᩍᤵ 角⏣ Masaru Sumida ඹྠ◊✲⪅ 㺰㺍㺠㺉㺫㺽㺎㺨㺽㺚㺼㺊㺨㺽㺻 㕥ᮌ ⠇ኵ Setsuo Suzuki ඹྠ◊✲⪅ MHI㺝㺶㺋㺎㺚㺌㺻㺡㺖㺧㺹㺚㺼㺎㺛㺼 ⸨ᮏ ኴ㑻 Taro Fujimoto An experimental study was performed for the flow in a modeled hydraulic headbox of paper making machines. Wakes from the partition plates in the dispersion part were investigated by using the air flow visualization technique of a smoke wire method. The controls of the wake were explored for several kinds of two channels and four inserted plates different in shape of the trailing edge. As a result, the rectification of the average velocity and the reduction of the wake region by contraction of the channel are effective for the plates with a trailing edge of a tapered and a wavy shape. In addition, visualization and fiber-concentration measurements, in which the trailing edge was a rectangular shape, were executed for real pulp-suspension flow.
ࡲ࠼ࡀࡁ
ᢒ⣬ᶵࡣᅗ1♧ࡍࡼ࠺ᮌᮦ⧄⥔ࡢᠱ⃮ᾮࢆࡼ
ࡾศᩓࡉࡏࡓ≧ែ࡛ࡘ⣬ᖜ᪉ྥᆒ୍ὶ㏿ὶ
ྥࢆᥞ࠼࡚ᄇฟࡉࡏࡿ࣊ࢵࢻ࣎ࢵࢡࢫ㸪⬺Ỉࡋ⣬ᒙ
ࢆᙧᡂࡍࡿ࣮࣡ࣖࣃ࣮ࢺ㸪ᶵᲔⓗ࡞ᅽ⦰ຊ࡛ᦢỈ ࡍࡿࣉࣞࢫࣃ࣮ࢺ㸪ຍ⇕ࡼࡾ⇱ࡉࡏࡿࢻࣛࣃ
࣮ࢺࡼࡗ࡚ᵓᡂࡉࢀ࡚࠸ࡿ㸬ࡑࡢ࠺ࡕ㸪ᢒ⣬ᶵ࣊
ࢵࢻ࣎ࢵࢡࢫࡣཎᩱᾮࡢ⧄⥔ࡢࣇࣟࢵࢡ㸦⤡ࡳྜ
࠸㸧ࢆᢚไࡋ࡞ࡀࡽ⃰ᗘࡴࡽࡢᑡ࡞࠸≧ែ࡛ᄇฟࡉ ࡏࡿࡇࡀồࡵࡽࢀ㸪ᢒ⣬ᕤ⛬࠾࠸࡚᭱ࡶ㔜せ࡞
㒊ศ࡛࠶ࡿ㸬ࡑࡢࡓࡵ㸪ࡇࢀࡲ࡛࣏ࣥࣉࡽྤࡁฟ ࡉࢀࡓཎᩱࢆ࣊ࢵࢻ࣎ࢵࢡࢫෆ࡛ᩚὶ࡞ࡽࡧᆒ➼
ࡍࡿࡓࡵࡢ᳨ウࡀຍ࠼ࡽࢀ㸪ࡑࡢᵓ㐀ࡣኚ㑄ࡋ࡚
ࡁ࡚࠸ࡿ㸦㸯㸧㸪㸦㸰㸧㸬ࡑࡢ୍ࡘ࡛࠶ࡿࣁࢻࣟࣜࢵࢡᆺ ࡣ㸪ศᒱᏍ⩌ࢆ⤒࡚㓄ศࡉࢀࡓཎᩱᾮࢆෆᤄᯈ࡛
ษࡽࢀࡓศὶ㊰ὶධࡉࡏ࡚ᩚὶࡋ㸪⧄⥔ศᩓࡢ ᝏࢆ㜵ࡄࡶ㓄ྥࡢᆒ୍ࢆィࡗ࡚ᄇฟࡉࡏ
ࡿࡶࡢ࡛࠶ࡿ㸬ࡋࡓࡀࡗ࡚㸪ὶ㊰ࡢศᩓ㒊࠾࠸࡚㸪 ෆᤄᯈୖᙧᡂࡉࢀࡿቃ⏺ᒙෆࡢ⦪ ࡸෆᤄᯈᚋ᪉
࡛ࡁࡿ࣐࢝ࣝࣥ ࡣࡶࡼࡾ㸪ᚋὶ୰⏕ᡂࡉࢀ
ࡿ⦪ ࡞ࡢ᪂ࡓ࡞ὶࢀࡢ᧠せ⣲ࡢ⏕ᡂࢆᢚṆࡋ㸪
ࡲࡓ࣮࣡ࣖୖᄇฟࡉࢀࡓཎᩱᾮࡢ⾲㠃⏕ࡌࡿ
⾲㠃Ἴࡢᖜቑࡸ㣕ᩓࡀᑡ࡞ࡃ࡞ࡿࡼ࠺࡞ὶࢀ≧
ែࢆసࡽ࡞ࡅࢀࡤ࡞ࡽ࡞࠸㸬ࡉࡽ㸪⧄⥔ࡢࣇࣟࢵ
ࢡࡸࢫࢺ࣮ࣜࢡࡢⓎ⏕ࢆ㜼Ṇࡋ࡚⣬ᆅྜࢆⰋዲ⥔
ᣢࡍࡿࡇࡶᚲせ࡛࠶ࡿ㸬ࡑࢀࡣὶ㊰ቨࢆᵓᡂࡍ
ࡿෆᤄᯈୖࡢቃ⏺ᒙࡑࡢᚋὶࡢ≉ᛶࢆᢕᥱࡋ㸪ࡑ
ࢀࡽࡢไᚚἲࢆゎ᫂ࡋ࡚࠾ࡃࡇࡀ᭱㐺࡞࣊ࢵࢻ࣎
ࢵࢡࢫࢆタィࡍࡿୖ࡛㔜せ࡞ࡿ㸬
ᮏ◊✲ࡣ㸪ࡿ⫼ᬒࡢࡶ㸪ᢒ⣬ᶵ࣊ࢵࢻ࣎
ࢵࢡࢫࢆᵓᡂࡍࡿせ⣲ࡢ࠺ࡕࡢศᩓ㒊࠾ࡼࡧࡑࡢᚋ
⥆ࡃᄇฟ㒊ࢆᑐ㇟ࡋ㸪ศᩓ㒊ᤄධࡉࢀࡿෆᤄ ᯈୖ⏕ᡂࡉࢀࡿὶቃ⏺ᒙᄇฟ㒊ᙧᡂࡉࢀࡿ
ᚋὶࡢὶືࣃࢱ࣮ࣥࡘ࠸࡚㸪ࡲࡎࡣ✵Ẽὶࢆ⏝࠸
+HDG ER[ :LUH SDUW 3UHVV SDUW
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࿑ 㧚ᛞ⚕ᯏߩ᭴ᚑ 近畿大学次世代基盤技術研究所報告 Vol.2 （2011）61−65
ߚนⷞൻታ㛎ࠍⴕߞߡⓥߒ㧘߆ߟߘࠇࠄߩᓮࠍ ᵹ〝ᒻ⁁ߣౝᝌ᧼ߩᓟ┵ㇱᒻ⁁ࠍᄌൻߐߖߡᬌ⸛ߒ ߚ㧔㧟㧕㧚ߟߢ㧘ߎࠇࠄߩ⍮ࠍෳ⠨ߦߒߡ㧘ታ㓙 ߩࡄ࡞ࡊᶧߦߟߡಽᢔ᧼ᓟᵹߦ߅ߌࠆࡄ࡞ࡊ❫⛽
േࠍ⺞ߴࠆߚߦ㧘৻ㇱᱜᣇᒻᢿ㕙࠳ࠢ࠻ࠍ↪
ߚၮ␆ታ㛎㧔㧠㧕㧘㧔㧡㧕ࠍ⹜ⴕߒߚ㧚
㧚ታ㛎ⵝ⟎߅ࠃ߮ᣇᴺ
ⓨ᳇ࠍ↪ߚන⋧ᵹนⷞൻታ㛎㧔㧟㧕
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ᒻ⁁ࠍ↪ߚ㧚ᓟ✼ࠍ⋥ⷺߦಾࠅ⪭ߣߒߚන⚐ᐔ᧼
ߪߪߊ㔌ߖࠎᢿጀࠍᒻᚑߒ㧘 㕙㧾ᢛᒻ᧼ߪ❑᷵ࠍ
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᷵ߩࠍ⺃ߒߡᓟᵹߩᢔࠍଦㅴߔࠆലᨐ߇ᦼ ᓙߢ߈ࠆ㧚
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ࠬశḮࠬ࠻ࡠࡏࠍ 3㨪6 ↪ߒ㧘ࡢࠗ࠼ࠕ࠳ࡊ࠲
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߃ߡ㧘ታ㓙ߩࡄ࡞ࡊᶧߦߟߡන⚐ᐔ᧼ᓟᵹߩ❫⛽
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