Numerical Analysis of a Single Rising Bubble Using Boundary-Fitted Coordinate System.

• TAKAGI Shu

• MATSUMOTO Yoichiro

• HUANG Huaxiong

書誌事項

タイトル別名

• Numerical Analysis of a Single Rising B

抄録

A numerical method is developed to simulate unsteady axisymmetric flow with a free surface. The method is based on a finite-volume solution of the equations on an orthogonal curvilinear coordinate system. A new iteration technique is used for the boundary condition of the free surface in order to stabilize the solution. The numerical method is applied to the simulation of unsteady motion of a single deformed bubble rising through a quiescent liquid. The numerical results show good quantitative agreement with those of experiments and calculations reported previously by other researchers. In the present study, the transient phenomena of an initially spherical bubble as it reaches the steady state are investigated. It is known experimentally that the rising bubble begins to show an unsteady three-dimensional(spiral or zigzag)motion beyond certain critical Reynolds and Weber numbers. Our numerical results suggest that the growth of axisymmetric shape oscillation causes three-dimensional motions of a rising bubble.

収録刊行物

• JSME International Journal Series B Fluids and Thermal Engineering

  JSME International Journal Series B Fluids and Thermal Engineering 40 (1), 42-50, 1997

  一般社団法人 日本機械学会

キーワード

• Bubbe
• Numerical Analysis
• Free Surface Flow
• Orthogonal Curvilinear Coordinate
• Deformation
• Unsteady Motion
• Zigzag Motion

詳細情報

• CRID: 1390282679647736192
• NII論文ID: 130003816401
• NII論文ID: 110002981423
• NII書誌ID: AA10888815
• DOI: 10.1299/jsmeb.40.42
• ISSN: 13475371
• ISSN: 13408054
• NDL書誌ID: 4163749
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4163749
• Web Site: http://www.jstage.jst.go.jp/article/jsmeb1993/40/1/40_1_42/_pdf
• 本文言語コード: en
• データソース種別:
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  • NDL
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