Figures of Researches/Projects

  1. Research at UAB, U.S.
  2. Researchat AUBURN, U.S.
  3. Researchat CEMEF, France
  4. Research in China
To Resume for CFD/FEA Job
To Resume for Computer related Job
To More Details on Researches
To Homepage

1. Development of Adaptive Control Strategies and CFD Modeling of Resin Transfer Molding (RTM) Processes

Click on each of following figures to watch a larger view.

Fig 1. Fig 1.    Click for larger figure Fig 2. Fig 2.    Click for larger figure Fig 3. Fig 3.    Click for larger figure

Fig. 1 Filling front positions and the Last Point to Fill (LPF) position that does not coincide with the preset vent location without control
Fig. 2 Filling front positions and the LPF position that coincide with the preset vent location with control
Fig. 3 The history of injection gate pressures achieving Fig. 2 under control

To top

2. Pseudosteady-State Mixed Convection inside Rotation Spherical Containers

Click on each of following figures to watch a larger view.

Fig 1. Fig 1.    Click for larger figure Fig 2. Fig 2.    Click for larger figure Fig 3. Fig 3.    Click for larger figure Fig 4. Fig 4.    Click for larger figure Fig 5. Fig 5.    Click for larger figure

Fig. 1 Schematic diagram of the computational grid system
Fig. 2 Pseudosteady-state streamline patterns and temperature field contours corresponding to the Rayleigh number 105, 106, 107, and 108 within non-rotating spheres
Fig. 3 Pseudosteady-state streamline patterns and temperature field contours corresponding to the Rayleigh number of 106 (Gr/Re2 =0.1, 0.5, 1, 5 and 10)
Fig. 4 Left coloum Pseudosteady-state streamline patterns and temperature field contours corresponding to Re=4.9 × 102 (Ra=105,106 and 107)
       Right coloum Pseudosteady-state streamline patterns and temperature field contours corresponding to Re=106 (Gr/Re2= 0.1, 0.5, 1, 5, 10 and ¥)
Fig. 5 Dependence of the mean Nusselt number on the Rayleigh and Reynolds numbers

To top

3. Identification of Parameters in Constitutive Equation Coupled with Microstructural Evolution

Click on each of following figures to watch a larger view.

Fig 2_1. Fig 1.    Click for larger figure Fig 3_4. Fig 2.    Click for larger figure Fig 3_5. Fig 3.    Click for larger figure Fig 3_6. Fig 4.    Click for larger figure Fig 3_9. Fig 5.    Click for larger figure Fig 4_3. Fig 6.    Click for larger figure Fig 4_6. Fig 7.    Click for larger figure

Fig. 1 Flow curves corresponding to DRV (dash lines) and DRX (solid lines) (Curtesy of J.J. Ionas et al, Treastise on Materials Science and Technology, Vol. 6, Plastic Deformation of Materials, 394-490. Academic Press, New York, 1975)
Fig. 2 Torque versus deformation of experiment and calculation at 650° C and nominal strain rates of 1 s-1 and 5 s-1
Fig. 3 Torque versus deformation of experiment and calculation at 650° C and nominal strain rates of 1 s-1
Fig. 4 Torque versus deformation of experiment and calculation at 650° C and nominal strain rates of 5 s-1 (Notice that when identification is performed separately at strain rates of 1 s-1 (Fig. 3) and of 5 s-1 (Fig. 4), the agreement is better than that obtained from identifying both simultanuously (Fig. 2))
Fig. 5 Simulation result of temperature distribution with constitutive equation proposed and parameters identified at nominal strain rate of 5 s-1
Fig. 6 Microstructure of XC70 ([C]=0.65 - 0.73) after deformation at boundary area of the sample
Fig. 7 Size of substructure distribution simulated according to a formula proposed in the research

To top

4. CFD Code Development, Implementations and Industrial Applications

Simulations of 3-D velocity field in the mold of billet caster

Description of continuous casting

Click on each of following figures to watch a larger view.

Fig 1. Fig 1.    Click for larger figure Fig 2. Fig 2.    Click for larger figure Fig 3. Fig 3.    Click for larger figure Fig 6. Fig 4.    Click for larger figure Fig 8. Fig 5.    Click for larger figure Fig 10. Fig 6.    Click for larger figure Fig 13. Fig 7.    Click for larger figure

Fig. 1 Computational domain (a quarter of the mold)
Fig. 2, 3 Computational grids
Fig. 4 One of the 2-D views of the folw fields from the simulations
Fig. 5 Experimental setup for the flow field measurement with LDA
Fig. 6 Snapshot of the flow field corresponding to Fig. 4
Fig. 7 The flow field from LDA corresponding to Fig. 4

3-D modeling of flow patterns in the steel making converters with bottom-gas injections

Description of steel-making process

Click on each of following figures to watch a larger view.

Fig 1. Fig 1.    Click for larger figure Fig 2. Fig 2.    Click for larger figure Fig 3. Fig 3.    Click for larger figure

Fig. 1, 2 Computaional grids
Fig. 3 Velocity field from the simulation

Simulations on the temperature field inside the mold of a billet caster

Description of continuous casting

Click on each of following figures to watch a larger view.

Fig 1. Fig 1.    Click for larger figure Fig 2. Fig 2.    Click for larger figure Fig 3. Fig 3.    Click for larger figure

Fig. 1 A control volume used in the calculation
Fig. 2 The effect from the temperature of the liquid metal in the tundish on the temperature distribution inside the mold
Fig. 3 The effect of withdrawal rate on the temperature distribution inside the mold

Simulations of the effect of Strand ElectroMagnetic Stirrers (SEMS) on liquid core

Click on each of following figures to watch a larger view.

Fig 1. Fig 1.    Click for larger figure Fig 2. Fig 2.    Click for larger figure Fig 4. Fig 3.    Click for larger figure

Fig. 1 One of the simulated flow patterns under SEMS
Fig. 2 The effect of one operational factor from SEMS on the flow
Fig. 3 Relative change of flow energy versus the change of one operational factor

To top


To Resume for CFD/FEA Job
To Resume for Computer related Job
To More Details on Researches
To Homepage
.