Quantitative visualization of Taylor-Couette flow with helical protrusion using optical and ultrasou

• 作 者: KIM S.J. TU X.C. KIM H.B.
• 机 构: SchoolofMechanicalandAerospaceEngineering,ResearchCenterforAircraftPartsTechnology
• 出 处: 排灌机械工程学报
• 发表日期: 2016年10期
• 基金项目: supported by Basic Science Research Program （2013-008918）through the National Research Foundation （NRF）, the Gyeongsang National University Fund for Professors on Sabbatical Leave,2015 Acknowledgement

The simplified flow of drilling process in the soil hardening or oil rig site was experimentally investigated. Two flow models were used. One is the concentric cylinders with helical protrusion at the inner cylinder. The other is the concentric plain wall