Three-dimensional modeling of pollutants transportation in the flow field around a spur dyke

2012 ◽  
Vol 27 (4) ◽  
pp. 510-520 ◽  
Author(s):  
Li-ping CHEN ◽  
Jun-cheng JIANG ◽  
Guang-fa DENG ◽  
Hui-fang WU
Keyword(s):  
Flow Field ◽  
Three Dimensional ◽  
Three Dimensional Modeling ◽  
Dimensional Modeling

Three-Dimensional FEM Analysis of Effect of Acceleration on Airflow Level Posture Sensor

2011 ◽  
Vol 271-273 ◽  
pp. 220-224
Author(s):  
Ming Ming Ji ◽  
Lin Hua Piao ◽  
Bai Hua Li
Keyword(s):  
Flow Field ◽  
Model Building ◽  
Three Dimensional ◽  
Fem Analysis ◽  
Three Dimensional Model ◽  
Three Dimensional Modeling ◽  
Equation Solving ◽  
Dimensional Modeling ◽  
Element Simulation ◽  
Hermetic Chamber

Using ANSYS-FLOTRAN CFD program, the finite element simulation is conducted by means of a series of procedures, such as three-dimensional model building of airflow level posture sensor, network modifying, loads applying equation solving, the flow field in three-dimensional hermetic chamber of sensitive element of airflow level posture sensor in different acceleration and inclination is Calculated, The numerical results show that for the sensor of airflow level posture sensor, the effect of acceleration and inclination is similar. Both of them can change the flow field of sensor, and will output a corresponding voltage. The simulation result of three-dimensional modeling is more comprehensive and accurate, which provides more reliable basis for practical research of the airflow level posture sensor.

INNER FLOW FIELD OF POOL MIXED BY THREE SUBMERSIBLE MIXERS

2012 ◽  
Vol 11 (02) ◽  
pp. 91-97 ◽  
Author(s):  
FEI TIAN ◽  
WEIDONG SHI ◽  
HUA JIANG
Keyword(s):  
Flow Field ◽  
Average Velocity ◽  
Large Scale ◽  
Sewage Treatment ◽  
Three Dimensional ◽  
Engineering Application ◽  
Circulating Water ◽  
Three Dimensional Modeling ◽  
Dimensional Modeling ◽  
Practical Engineering

To study the agitating effect of submersible mixers in a square sewage treatment pool, the three-dimensional modeling Pro/E software was adopted to establish the physical model. The large-scale computational fluid dynamics software FLUENT6.3 was used, and the large-scale software ICEM was selected to build an unstructured tetrahedron grid of the sewage treatment pool. Next, the sewage treatment pool was numerically simulated by RNG k-ε turbulent model and move coordinate system technology. The macrofluid field and the flow field distribution of each section were analyzed to observe the efficiency of each submersible mixer. The average velocity of the fluid and the stirring volume were studied simultaneously. Results show that, under the action of three mixers, fluid of the sewage pool forms a continuous circulating water flow. The fluid is mixed adequately. The average velocity of fluid in the pool is at around 0.3 m/s, and the fluid mixing area in the pool is more than 90%, which is in agreement with the working requirements. Consequently, it can provide a reference basis for the practical engineering application of submersible mixers by using this method.

Three-Dimensional Modeling of Reacting Flows in Horseshoe Vortex Combustors

1984 ◽  
Author(s):  
A. Turan ◽  
N. G. Ruggieri ◽  
G. E. Smith ◽  
B. C. Forbes
Keyword(s):  
Flow Field ◽  
Three Dimensional ◽  
Horseshoe Vortex ◽  
Reacting Flows ◽  
Reacting Flow ◽  
Test Results ◽  
The Real ◽  
Three Dimensional Modeling ◽  
Dimensional Modeling ◽  
Analytical Results

AVCO Lycoming’s circumferentially stirred combustor employs a well-established vortex, in the shape of a horseshoe with fuel injected at the apex, to promote mixing in each sector of the annulus. This paper presents the results from three-dimensional viscous flow analyses of the reacting flow field in this type of combustor. Three designs are examined — an idealized design, used for investigating how to implement the concept, and two real designs. The analytical results agree well with test results for the real designs. Of greater engineering interest, however, the analytical results reveal how the real designs work differently from the idealized design, and they explain why the two real designs contrast sharply with one another in performance.

scholarly journals Three-Dimensional Modeling of Heat Flow Field for Hot Dry Rock Crannies

2011 ◽  
Vol 15 ◽  
pp. 4504-4510 ◽  
Author(s):  
Lun Li ◽  
Dong-hong Si ◽  
Ji-shun Li ◽  
Yong-jian Yu
Keyword(s):  
Heat Flow ◽  
Flow Field ◽  
Three Dimensional ◽  
Hot Dry Rock ◽  
Three Dimensional Modeling ◽  
Dimensional Modeling
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