Getting started with Flow Simulation in Solid Works
Aim:
To made the flow simulation in solid works. To analyse the various parameters as a result of flow simulation.
Objective:
- The flow simulation is made in a pipe which is modelled in solid works.
- The pipe flow simulation is made with the inlet Reynolds number of 100,1000 and 10,000.
- For each cases various result parameters should be analysed and are shown below.
- Place line probes at 95%, 90% and 85% of the pipe length.
- Compare the normalized velocity profile at each of these locations.
- Normalize the velocity profile by the inlet velocity.
- The output plots and the cut plot views should be projected.
Formula used:
`Re = (rho.v.d)/mu`
Where, `rho`= density of the fluid.
v = velocity.
d = diameter of the pipe.
`mu` = dynamic viscosity.
Computational Fluid Dynamics (CFD):
CFD is one of the study of mechanics. This study deals with the numerical analysis and datastructure to solve the fluid flow problems. By using CFD, we can analyse the flow of the fluid virtually in any medium. CFD become an important domain in the engineering sector especially under mechanical branch. The flow of the fluid, velocity of the fluid and various other factor which are involved during the fluid flow can be analysed by the CFD study. Various softwares such as Ansys fluent & CFX, Open foam, ANSA are available for this study. Solid works is also providing the flow simulation feature for carrying this studies.
Calculation:
Hint: Water is a working fluid for this simulation.
Input datas:
`rho` = 1000
d = 0.04
Re = 100,1000,10000
`mu`= 8.9 x `10^-4`
when Re = 100,
v = 0.002225 m/s.
Re = 1000,
v = 0.02225 m/s.
Re = 10,000,
v = 0.2225 m/s.
Part modelling:
A pipe is made with the diameter of 0.04m and with the length of 1m. The shell size of the pipe is of 0.001m. Once the modelling was done, 3 line probes of 95%,90% and 85% of total length is made.
Simulation setup:
- General settings are made and the type of fluid is mentioned.
- The pipe or the object subjected to analysis is closed with the lid.
- The boundary conditions are provided with inlet velocity (based on the reynolds number) at one end and the static pressure at the other end.
- The mesh grid values at each axis is assigned.
- The cutplot was made.
- The simulation is started.
The parametric study was carried out to get various output by providing various inputs in a single attempt.
Results and discussion:
The various cut plot images and the velocity plots are represented below,
Case 1:
Re = 100 and v = 0.002225 m/s.
Cut plot images:
at 95% line probe:
at 90% line probe:
at 85% line probe:
Velocity plot images:
at 95% line probe:
at 90% line probe:
at 85% line probe:
Velocity comparison plot:
Case 2:
Re = 1000 and v = 0.02225 m/s.
Cut plot images:
at 95% line probe:
at 90% line probe:
at 85% line probe:
Velocity plot images:
at 95% line probe:
at 90% line probe:
at 85% line probe:
Velocity comparison plot:
Case 3:
Re = 10,000 and v = 0.2225 m/s.
Cut plot images:
at 95% line probe:
at 90% line probe:
at 85% line probe:
Velocity plot images:
at 95% line probe:
at 90% line probe:
at 85% line probe:
Velocity comparison plot:
From all the plots obtained as a result of the flow simulation, we can observe the nature of the velocity at different places.
- For the constant velocity, the velocity of the 3 line probes didn't differ much.
- In the first case, due to the very least velocity ( as compared with other 2 cases) the variation in the velocity is clearly obtained in the cut plot. On the other 2 cases, the maximum cross sectional flow area has a constant velocity.
- For the case 1 and case 2, the velocity comparison curve was obtained with the perfect overlap of the velocity lines of 3 line probes.
- In case 3 the velocity comparison plot explains that at the centre the velocity value decrease with the length. The maximum velocity in 95% line probe decreases at 90% line probe followed by 85% line probe.
Conclusion:
Thus, the flow simulation in pipe was made using solid works.
Reference: