Channel flow simulation using CONVERGE CFD

OBJECTIVE

  • To set up a channel flow for three different mesh grid sizes using convergent science and paraview.
  • To show various velocity and pressure contours for the different mesh.
  • To show the various plot of velocity,   pressure, mass flow rate and total cell count for different mesh grids.

 PROFILE GEOMETRY:

Lengths along x,y, z-axis are;

x=0.1m y=0.01m z=0.01m

INITIAL BOUNDARY CONDITIONS:

  • The flow is general flow.
  • Air contains a mixture of O2 and N2 which will flow through the required geometry.
  • The pressure at the inlet and outlet of the geometry is 100001 Pascal and 100000 Pascal.
  • The Prandtl number is 0.9 and the Schmidt number is 0.78.
  • The total number of cycles performed is 15000.

MESH SIZES:

  • dx = 2e-4m              dy = 2e-4m       dz = 2e-4m
  • dx = 1.5e-3m           dy = 1.5e-3m    dz = 1.5e-3m
  • dx =  1.0e-3m          dy = 1.0e-3m    dz = 1.0e-3m

These mesh sizes provide study of the profile. Finer the mesh size ,more better results can be obtain about the profile.

RESULTS:

Base Mesh sizes are provided below

                                               base mesh size (2e-4m)

                                                     base mesh size (1e-3m)

 

                                          base mesh size (1.5e-3m)

 

The pressure contours for different meshes are provided below

 

                                                    base mesh size (2e- 4m)

                                                    base mesh size (1.5e-3m)

 

                                                   base mesh size (1e-3m)

Velocity contours for different mesh sizes are provided below

                                                      base mesh size (2e-4m)

                                                base mesh size (1.5e-3m)

 

                                                      base mesh size (1e-3m)

Total cell count plot

case1

case 2

case 3

Pressure plot

case 1

case 2

case 3

 

Velocity plot

case 1

case 2

case 3

Mass flow rate plot

case 1

case 2

case 3

CONCLUSION:

  • Finer meshing provides better results about the profile as finer meshing makes it smooth.
  • According to the plots as the mesh size decreases the cell count increases.
  • At the initial cycles, the velocity doesn't remain the same but after a few more cycles it becomes constant
  • At the initial cycles, the pressure fluctuates but after a few more cycles it becomes constant
  • The mass flow rate during inlet and outlet remains the same, according to the law of conservation of mass.

Projects by shubham jha

OBJECTIVE:  Reynold\'s decomposition to the NS equations and come up with the expression for Reynold\'s stress. Explain your understanding of the terms Reynold\'s stress What is turbulent viscosity? How is it different from molecular viscosity? The Rey Read more

Prandtl Meyer Shock problem
shubham jha · 2019-08-13 11:46:31

OBJECTIVE 1. Shock flow boundary conditions 2. What is a shock wave? 3. Effect of SGS parameter on shock location   Shock Flow Boundary Conditions:  For solving the steady-state flow appropriate boundary conditions are needed. It is one o Read more

OBJECTIVE: Simulate Flow of fluid over a throttle body in converge studio and post-process the results. Post process the results and show pressure and velocity contours. Show the plots for pressure, velocity, mass flow rate and total cell count. Create an animatio Read more

OBJECTIVE: Simulate Flow of fluid over a throttle body in converge studio and post-process the results. Post process the results and show pressure and velocity contours. Show the plots for pressure, velocity, mass flow rate and total cell count. Create an animatio Read more

OBJECTIVE: Simulate Flow of fluid over a throttle body in converge studio and post-process the results. Post process the results and show pressure and velocity contours. Show the plots for pressure, velocity, mass flow rate and total cell count. Create an animatio Read more

OBJECTIVE:

  • Simulate Flow of fluid over a throttle body in converge studio and post-process the results.
  • Post process the results and show pressure and velocity contours.
  • Show the plots for pressure, velocity, mass f Read more

OBJECTIVE: To setup flow over a backward facing step for 3 different mesh size using preprocessor as Converge studio and paraview to simulate the data Show pressure and velocity contours for the different mesh size. Show the plots of velocity, pressure, mass flow r Read more


Loading...

The End