scholarly journals CFD Analysis for Turbulent Flow within and over a Permeable Bed

2012 ◽  
Vol 2 (5) ◽  
pp. 78-88 ◽  
Author(s):  
Nagia E. Elghanduri
Keyword(s):  
Turbulent Flow ◽  
Cfd Analysis

CFD analysis of the turbulent flow in ladles and the alloying process during tapping of steel furnaces

2000 ◽  
Vol 29 (2) ◽  
pp. 71-80 ◽  
Author(s):  
Harald Laux ◽  
Stein Tore Johansen ◽  
Halvard Berg ◽  
Ole Svein Klevan
Keyword(s):  
Turbulent Flow ◽  
Cfd Analysis

CFD analysis of two-phase turbulent flow in internal airlift reactors

2011 ◽  
Vol 90 (6) ◽  
pp. 1612-1631 ◽  
Author(s):  
Masroor Mohajerani ◽  
Mehrab Mehrvar ◽  
Farhad Ein-Mozaffari
Keyword(s):  
Turbulent Flow ◽  
Cfd Analysis ◽  
Two Phase ◽  
Airlift Reactors

PIV measurement and CFD analysis of the turbulent flow in a 3 × 3 rod bundle

2020 ◽  
Vol 140 ◽  
pp. 107135 ◽  
Author(s):  
Han Wang ◽  
Daogang Lu ◽  
Yuzhong Liu
Keyword(s):  
Turbulent Flow ◽  
Cfd Analysis ◽  
Rod Bundle ◽  
Piv Measurement

CFD analysis of the turbulent flow in baffled shake flasks

2013 ◽  
Vol 70 ◽  
pp. 140-150 ◽  
Author(s):  
Chao Li ◽  
Jian-Ye Xia ◽  
Ju Chu ◽  
Yong-Hong Wang ◽  
Ying-Ping Zhuang ◽  
...  
Keyword(s):  
Turbulent Flow ◽  
Cfd Analysis ◽  
Shake Flasks

CFD Analysis of Turbulent Flow in a Nuclear Fuel Bundle With Mixing Vane

2002 ◽  
Author(s):  
Wang Kee In ◽  
Dong Seok Oh ◽  
Tae Hyun Chun
Keyword(s):  
Turbulent Flow ◽  
Nuclear Fuel ◽  
Cfd Simulation ◽  
Three Dimensional ◽  
Flow Characteristics ◽  
Cfd Analysis ◽  
Mean Flow ◽  
Cfd Models ◽  
Fuel Bundle ◽  
Rod Array

A computational fluid dynamics (CFD) analysis was performed to investigate the coolant mixing in a nuclear fuel bundle that is promoted by the mixing vane on the grid spacer. Single and multiple subchannels of one grid span of the fuel bundle were modeled to simulate a 5×5 rod array experiment with the mixing vane. The three-dimensional CFD models were generated by a structured multi-block method. The standard k-ε turbulence model was used in the current CFD simulation since it is practically useful and converges well for the complex turbulent flow in a nuclear fuel bundle. The CFD predictions of axial and lateral mean flow velocities showed a somewhat large difference from the experimental results near the spacer but represented the overall characteristics of coolant mixing well in a nuclear fuel bundle with the mixing vane. Comparison of single and multiple subchannel predictions shows good agreement of the flow characteristics in the central subchannel of the rod array. The simulation of multiple subchannels shows a slightly off-centered swirl in the peripheral subchannels due to the external wall of the rod array. It also shows no significant swirl and crossflow in the wall subchannels and the corner subchannels.

CFD Analysis of Flowing Characteristics of Turbulent Flow in Rectangular Channels in Ocean Environment

2010 ◽  
Author(s):  
Binghuo Yan ◽  
Hanyang Gu ◽  
Yanhua Yang ◽  
Yanping Huang
Keyword(s):  
Steady State ◽  
Turbulent Flow ◽  
Tube Wall ◽  
Rolling Motion ◽  
Cfd Analysis ◽  
Mixing Coefficient ◽  
Rectangular Channels ◽  
Ocean Environment ◽  
Turbulent Models ◽  
Channel Center

The flowing characteristics of turbulent flow in rectangular channels in rolling and heaving motions are investigated theoretically with FLUENT code. The flowing model of turbulent flow in rectangular channels in rolling and heaving motion is established. The effects of several turbulent models and parameters on the flow are analyzed. In rolling motion, the velocity profile in channel center is more averaged. The mixing coefficient can be strengthened significantly in rolling motion. The effect of heaving motion on turbulent flow is more limited than that of rolling motion. The turbulent kinetic energy and fluctuating velocity in rolling motion are greater than that in heaving motion and steady state. The effect of rolling motion on the turbulent flow can be depressed by the tube wall.

CFD ANALYSIS OF TURBULENT FLOW PAST SQUARE CYLINDER USING DYNAMIC LES

1999 ◽  
Vol 13 (7-8) ◽  
pp. 1097-1112 ◽  
Author(s):  
S. MURAKAMI ◽  
S. IIZUKA ◽  
R. OOKA
Keyword(s):  
Turbulent Flow ◽  
Cfd Analysis ◽  
Square Cylinder ◽  
Flow Past

scholarly journals CFD analysis of operational flow nature of a wind turbine model using environmental wind data from Nigerian Defence Academy (NDA)

2021 ◽  
Vol 40 (4) ◽  
pp. 623-630
Author(s):  
M. Samuel ◽  
S.U. Muhammad ◽  
W.C. Solomon ◽  
G.C. Japheth
Keyword(s):  
Wind Speed ◽  
Turbulent Flow ◽  
Wind Turbine ◽  
Flow Analysis ◽  
Cfd Analysis ◽  
Model Design ◽  
Wind Speeds ◽  
Operational Flow ◽  
Turbine Model

A wind turbine is a machine which converts the power in the wind into electricity. It operates under varying wind speeds depending on the environmental wind conditions. In this paper, we have presented the operational flow analysis of a proposed wind turbine model in Nigerian Defence Academy (NDA) Kaduna. The case study is for 5.6m/s, 7.5m/s and 9.5m/s wind speed. The model design and assembly of the components were done with the help of SolidWorks 2018 and the operational flow analysis done with ANSYS 15.0. The result showed that the flow nature of the turbine model grew from laminar flow to turbulent flow increasingly with the environmental wind speed. The flow nature remained laminar from 0.0356 to 1780 Reynolds at 5.6m/s. At 7.5m/s wind speed, from laminar 0.403 Reynolds to turbulent 4290 Reynolds and at 9.5m/s, from laminar 0.381 Reynolds to turbulent 4900 Reynolds. High turbulent flow and mass imbalance nature depicts that phenomenon like wake and vibration of the system occurred.

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