Estimation of Boundary Layer Thickness at Side Wall of a Fully Turbulent Agitated Vessel without Baffles
スポンサーリンク
概要
- 論文の詳細を見る
The average boundary layer thickness at the side wall of an agitated vessel without baffles, yD, was estimated from the correlation of the friction factor with the help of the measured universal expression of tangential velocity distribution at a vessel wall. The average boundary layer thickness was independent of the Reynolds number in the turbulent boundary layer range of ReG > 5000, but it increased with decreasing Reynolds number being inversely proportional to the 1/2 power of a generalized Reynolds number in the laminar boundary layer range of ReG < 5000. At the turbulent boundary layer of ReG > 5000, the ratio of the average boundary layer thickness to the vessel radius yD/(D/2) was in the range of 0.013 to 0.018 for the ratio of impeller to vessel diameters d/D = 0.61 to 0.4. The correlation line of the dimensionless tangential velocity at the boundary layer edge uD++ (≡uD+(βD/md)) vs. the dimensionless boundary layer thickness yD++ (≡yD+(βD/md)) coincided with the universal velocity distribution law for a flat plate for the impellers having a larger impeller similarity parameter X over 0.15, but the former shifted upward from the latter for the impellers having a smaller impeller similarity parameter X below 0.15, although the gradient (duD++/d ln yD++) was the same as that for the universal velocity distribution law.
- 社団法人 化学工学会の論文
- 2007-10-01
著者
-
Tada Yutaka
Department of Life and Materials Engineering, Nagoya Institute of Technology
-
Kato Yoshihito
Department of Life and Materials Engineering, Nagoya Institute of Technology
-
HIRAOKA Setsuro
Department of Applied Chemistry, Nagoya Institute of Technology
-
IWATA Shuichi
Departments of Materials Science and Engineering, Nagoya Institute of Technology
-
Iwata Shuichi
Dep. Of Material Engineering Nagoya Inst. Of Technol.
-
Iwata Shuichi
Department Of Applied Chemistry Nagoya Institute Of Technology
-
YAMAGUCHI Takao
Department of Applied Chemistry, Nagoya Institute of Technology
-
Kato Yoshihito
Department Of Communications And Systems The University Of Electro-communications(present Address):i
-
Sato K
Department Of Bioinformatics Engineering Graduate School Of Information Science And Technology Osaka
-
SHIOBARA Katsumi
Satake Chemical Equipment Mfg., Ltd.
-
YAMAMURA Masaaki
Department of Information Processing Education, Chubu University
-
Shiobara Katsumi
Satake Chemical Equipment Mfg. Ltd.
-
Yamamura Masaaki
Department Of Information Processing Education Chubu University
-
Takeda Yasuhiro
Department Of Life And Materials Engineering Nagoya Institute Of Technology
-
Tada Yutaka
Department Of Life And Materials Engineering Nagoya Institute Of Technology
-
Kato Yoshihiro
Department Of Life And Materials Engineering Nagoya Institute Of Technology
-
Hiraoka S
Department Of Life And Material Engineering Nagoya Institute Of Technology
-
Tada Yutaka
Department Of Life And Material Engineering Nagoya Institute Of Technology
-
Yamaguchi Takao
Department Of Applied Chemistry Nagoya Institute Of Technology
-
Iwata Shuichi
Department of Appfied Chemistry, Nagoya Institute of Technology
-
Yamamura Masaaki
Department of Chemistry, Faculty of Engineering Science, Osaka University
-
Tada Yutaka
Department of Applied Chemistry, Nagoya Institute of Technology
関連論文
- Effect of Mixing on Sonochemical Reaction in a Sonoreactor
- Prediction of Mixing Pattern by Using Power Number Diagram in Baffled and Unbaffled Mixing Vessels
- PHASE EQUILIBRIA AND SIMULATION METHOD FOR HETEROGENEOUS AZEOTROPIC DISTILLATION
- Calculation of Three-Phase Flash and Partial Condensation for Ternary Systems
- A Method of Calculating Multistage Liquid-Liquid Extraction for Ternary Systems
- Solid-Liquid Mass Transfer in Gas-Liquid-Solid Agitated Vessel
- Low-Frequency Fluctuations in Agitated Vessels
- The Effect of Off-bottom Clearance on Macro Instabilities in a Stirred Vessel
- Singular Finite Elements for the Die-Swell Simulation of Viscoelastic Fluids
- Practical Correlation of Excess Molar Volumes of Binary, Ternary and Quaternary Mixtures of Water, Methanol, Ethanol and 1-Propanol by an NRTL-Type Equation