Suppression of the Karman Vortex Street due to Positive Buoyancy. Effect of Fluid Type on Wake Oscillation and Surface Value.
スポンサーリンク
概要
- 論文の詳細を見る
Effect of fluid type on wake oscillation and surface value in suppression of the Karman vortex street due to positive buoyancy from a heated circular cylinder submerged in an upward mainstream is elucidated by numerical calculation of the Navier-Stokes equations with buoyant term and the energy equation for mercury, air and water flow. Numerical results are validated. The Strouhal number decreases abruptly at the critical Richardson number Ri<SUB>c</SUB>, which can be regarded as the exact boundary between the regions of the transformed vortex street and the plume flow. The largest Ri<SUB>c</SUB> is for water, the smallest is for air. The mean Nusselt number of water flow decreases abruptly at Ri<SUB>c</SUB>. This is because that the local Nusselt number near the rear stagnant point decreases at Ri<SUB>c</SUB> due to a formation of a twin vortex.
- 一般社団法人 日本機械学会の論文
一般社団法人 日本機械学会 | 論文
- PREFACE
- Hybrid Vibration Suppression of Flexible Structures Using Piezoelectric Elements and Analog Circuits
- Application of Momentum Exchange Impact Dampers to Forging Machine
- アルミニウム繊維層を設置した流路の熱伝達と圧力損失特性
- 地震荷重下における配管のき裂進展評価手法の提案