Pipe Flow simulation using Solidworks

AIM – To run a pipe flow simulation with an inlet Reynolds number of 100, 1000 and 10000.

For each of these cases do the following

  1. Place the line probes at 95%, 90%, 85%of the pipe length.
  2. Compare the normalized velocity profile at each of these locations.
  3. Normalize the velocity profile by the inlet velocity.

Reynolds Number – It is defined as the product of density times velocity ties length divided by the coefficient of viscosity. This is proportional to the ratio of inertial forces and viscous force.

Dimensions of Pipe- Diameter = 0.02m

                              Length of pipe = 1m

                        

Fluid details - Density = 1000 kg/m3

 PROCEDURE –

  • Firstly the pipe model is designed using solid works as per the dimensions.
  • Then , we make three different probes at 95%, 90%, 85% of the pipe length.
  • Using flow simulation we them make use of lids at both the inlet and outlet of the pipe to make it water tight.
  • Then we give different boundary conditions for the wall.
  • Then we create a XY plot for different probes for velocity graphs.
  • A cut flow plot is created to visualise how the flow occurs across the pipe.
  • Then a new parametric study is created.
  • During the parametric study we did a refinement of mesh in order to attain smooth curves.
  • A velocity comparison graph is also generated for 95%, 90%, 85% probe lines.

CASE 1-

For Reynolds number = 100,

Velocity profile at inlet

Comparison of velocity profiles

Cut plots obtained durig parametric study

Design point 1

Design point 2

Design point 3

For Reynolds number = 1000,

Comparison of velocity profiles

Design point 1

Design point 2

Design point 3

For Reynolds number = 10000,

Comparison of velocity profiles

Design point 1

Design point 2

RESULT – During  the simulation it was observed that with course mesh structure we got a choppy image of the flow simulation but as we increased the mesh elements the choppiness of the image gradually reduced to smooth images.


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