Study on the Structures of Fluid Flows in an Irregular Annular Space like a Partial Arc Journal Bearings

部分圆弧轴颈轴承等不规则环形空间内流体流动结构研究

• 批准号: 13650160
• 负责人: NOMA Masayasu
• 金额: $ 2.3万
• 依托单位: Maizuru National College of Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2001
• 资助国家: 日本
• 起止时间: 2001 至 2002
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-13650160/
• 关键词: Partial Arc Journal Bearings; Taylor Vortices; Cavity Flows; Particle Image Velocimetry

The results are summarized as follows :(1) The critical Taylor number based on the pad clearance has almost the same tendency which has been obtained in submerged multi-pad journal bearings.(2) As the cavity arc extent θ_s increases, the Taylor vortices based on the pad clearance appear first. As θ_s increases further, the Taylor vortices based on the cavity clearance appear and coexist with those based on the pad clearance.(3) Even if the cavity arc extent θ_s increases extremely large to minimize the bearing pad, the Taylor vortices based on the pad clearance never vanish. As the Taylor number increases, they penetrate the cavity region deeper and deeper to sweep the Taylor vortices based on the cavity clearance.(4) When three minimized pads are set at intervals of 120 deg., the Taylor vortices based on the pad clearance sweep them away completely, as if the cavities do not exist.Even in such a case, the cavity flow is naturally generated to satisfy the mass content role. Interaction between the Taylor vortices and cavity flows remains to be observed precisely in the future work.

研究结果表明：（1）基于瓦间隙的临界泰勒数与浸没式多瓦滑动轴承的临界泰勒数具有基本相同的变化趋势。(2)随着凹腔弧长θ s的增大，首先出现基于瓦块间隙的Taylor涡。随着θ s的进一步增大，基于型腔间隙的泰勒涡出现，并与基于轴瓦间隙的泰勒涡共存。(3)即使凹腔弧长θ s增大到极大值以减小轴瓦厚度，基于轴瓦间隙的泰勒涡也不会消失。随着泰勒数的增加，它们越来越深地穿透空腔区域，以基于空腔间隙的方式扫过泰勒涡。(4)当以120 °的间隔设置三个最小化的焊盘时，基于衬垫间隙的泰勒涡将它们完全扫走，就好像空穴不存在一样。2即使在这种情况下，空穴流也会自然产生，以满足质量含量的作用。Taylor涡与空腔流动之间的相互作用有待于在未来的工作中精确观察。

项目成果

野間 正泰, 森 淳暢: "部分円弧ジャーラル軸受様すきま内流れに関する研究"可視化情報全国講演会(山口2001)講演論文集. 2・Suppl.2. 73-76 (2001)

Masayasu Noma，Atsunobu Mori：“部分圆弧轴承间隙中的流动研究”全国可视化信息会议（Yamaguchi 2001）论文集2·Suppl.2（2001）。

Noma, M. and Mori, A.: "Study on the Fluid Flows in an Annular Space like a Partial Arc Journal Bearings"Journal of the Visualization Society of Japan. Vol.21, Suppl. No.2. 73-76 (2001)

Noma, M. 和 Mori, A.：“像部分弧形轴颈轴承这样的环形空间中的流体流动研究”日本可视化学会杂志。

野間 正泰, 森 淳暢: "部分円弧ジャーナル軸受様すきま内流れに関する研究"可視化情報全国講演会(山口2001)講演論文集. 21・Suppl.2. 73-76 (2001)

Masayasu Noma，Atsunobu Mori：“部分圆弧轴颈轴承间隙中的流动研究”全国可视化信息会议（Yamaguchi 2001）讲座论文集21・Suppl.2（2001）。

野間 正泰, 藤田 幸也, 森 淳暢: "部分円弧ジャーナル軸受様すきま内流れの構造に関する研究"トライボロジー会議予稿集(仙台2002-10). 145-146 (2002)

Masayasu Noma、Yukiya Fujita、Atsunobu Mori：“部分圆弧轴颈轴承间隙中流动结构的研究”摩擦学会议论文集（Sendai 2002-10）145-146（2002）。

Noma, M., Fujita, Y. and Mori, A.: "Study on the Structures of Fluid Flows in an Annular Space like a Partial Arc Journal Bearings"Proceedings of JAST Tribology Conference Sendai. 145-146 (2002)

Noma, M.、Fujita, Y. 和 Mori, A.：“像部分弧形轴颈轴承这样的环形空间中的流体流动结构的研究”JAST 仙台摩擦学会议论文集。