並列タイトル等熱毛細管半ゾーンにおける定常軸対称および時間依存3次元臨界流による力学的自由表面歪み
タイトル(掲載誌)宇宙開発事業団技術報告: Marangoni Convection Modeling Research: Annual Report April 1, 2000 - March 31, 2001 = NASDA Technical Memorandum: Marangoni Convection Modeling Research: Annual Report April 1, 2000 - March 31, 2001
一般注記The flow-induced dynamic free-surface deformation in thermocapillary liquid bridges is investigated in the limit of small capillary numbers. The dynamic deformations of the basic flow and those of the critical mode are calculated numerically for small (Pr = 0.02) and intermediate Prandtl numbers (Pr = 4.38). Five physical effects contributing to the leading-order deformation are discussed. These are the hydrodynamic pressure, the viscous stress, the change of the volume due to thermal expansion, the temperature-dependence of the surface tension, and the temperature-dependence of the hydrostatic pressure. The magnitude and the phase of the dynamic surface-deformation wave relative to the magnitude of the temperature field are predicted for hydrothermal waves. It is shown that the leading-order dynamic surface deformations are caused by the flow fields at lower orders of the capillary number. Therefore, the leading order dynamic deformations do not feed back to the leading-order thermocapillary flow. This conclusion holds for the basic axisymmetric flow as well as for the non-axisymmetric three-dimensional supercritical flow close to the threshold.
資料番号: AA0032601008
レポート番号: NASDA-TMR-010015E
一次資料へのリンクURLhttps://jaxa.repo.nii.ac.jp/?action=repository_action_common_download&item_id=42541&item_no=1&attribute_id=31&file_no=1
連携機関・データベース国立情報学研究所 : 学術機関リポジトリデータベース(IRDB)(機関リポジトリ)
提供元機関・データベース宇宙航空研究開発機構 : 宇宙航空研究開発機構リポジトリ