4-2-1-603 四角穴パターンを有する液膜シールの静および動特性に関する数値解析(4-2-1:軸受,シール,領域4:流体関連振動・ローターダイナミクス,総合テーマ「海を越え,国を越え,世代を超えて!」)

• 高橋 竜矢

  長岡技術科学大学

• 森田 誠大

  長岡技術科学大学

• 金子 覚

  長岡技術科学大学工学部

• 田浦 裕生

  長岡技術科学大学工学部

書誌事項

タイトル別名

• 4-2-1-603 Numerical Analysis on Static and Dynamic Characteristics of Liquid Annular Seals with Square-Hole Pattern

抄録

A theoretical study is carried out to investigate the effects of square-hole pattern formed in seal stator surface on the static and dynamic characteristics of liquid annular seals for optimum design of the square-hole pattern. Various types of square-hole pattern are examined by changing the number of holes, N_d, cross-sectional area of hole, S_d, and combinations of N_d and S_d under a constant value of total cross-sectional area of holes, A_d. The numerical results show that the square-hole patterns with larger N_d, and those with combinations of larger N_d and smaller S_d under a constant A_d yield a lower axial leakage flow rate and smaller quantitative effect of inlet swirl velocity on the whirl-frequency ratio than conventional smooth surface seals. This is expected since these hole-patterns have a larger total sidewall surface area of holes, providing a higher energy loss to the flow passage across the clearance steps between land and hole regions. These phenomena would contribute to improving the efficiency and stability margin of pumps.

収録刊行物

• 機械力学・計測制御講演論文集

  機械力学・計測制御講演論文集 2013 "603-1"-"603-7", 2013-08-25

  一般社団法人日本機械学会

キーワード

• Annular Seals
• Damper Seals
• Square-Hole Pattern
• Hole-Pattern Parameters
• Leakage Flow Rate
• Rotordynamic Coefficients
• Whirl-Frequency Ratio
• Inlet Swirl Velocity

詳細情報

• CRID: 1572543027757108224
• NII論文ID: 110009979920
• NII書誌ID: AA11901770
• ISSN: 13480235
• 本文言語コード: ja
• データソース種別:
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