Hydrodynamics Fluid simulations report
Submitted by: Shahbaz Ahmed Khan (Na-043 of Sem 4)
To: Dr. Waqar
Short line:
1)Flow speed: 0.06 and Viscosity: 0.020
2)Flow speed: 0.09 and Viscosity: 0.020
Observation: as I started it, it took a few seconds pause before its flow transformed as
shown in the picture.
3)Flow speed: 0.120 and Viscosity: 0.020
Observation: The fluid formation was faster here than the previous.
4)Flow speed: 0.120 and Viscosity: 0.050
Observation: The fluid formation was fast however that was all, there was no vortex.
One possible reason because larger viscosity mean smaller renold no.
Long line:
1)Flow speed: 0.06 and Viscosity: 0.020
2)Flow speed: 0.09 and Viscosity: 0.020
Observation: Even at this velocity it did not produce any vortex.
3)Flow speed: 0.120 and Viscosity: 0.020
Observation: It pauses a bit first and then it rapidly produce vorticity.
4)Flow speed: 0.120 and Viscosity: 0.050
Observation: It is steady at first and takes a very long time before it generates Karman
vortex at high speed.
5)Flow speed: 0.120 and Viscosity: 0.120 and 0.200
Observation: We can clearly observe the side effects of increasing viscosity.
Large circle:
1)Flow speed: 0.06 and Viscosity: 0.020
2)Flow speed: 0.09 and Viscosity: 0.020
Observation: The fluid flow is slowly and gradually formed.
3)Flow speed: 0.120 and Viscosity: 0.020
Observation: The flow starts slow at first then is developed rapidly.
4)Flow speed: 0.120 and Viscosity: 0.050
Observation: No vortex is visible.
Airfoil:
1)Flow speed: 0.06 and Viscosity: 0.020
Observation: The force is very small.
2)Flow speed: 0.09 and Viscosity: 0.020
Observation: The flow formation is rapid.
3)Flow speed: 0.120 and Viscosity: 0.020
Observation: The flow formation is rapid and force is more then the last exp.
4)Flow speed: 0.120 and Viscosity: 0.100
Observation: Force arrow to tilted more at greater viscosity.
5)Flow speed: 0.120 and Viscosity: 0.100
Observation: Force arrow to tilted even more at much greater viscosity and its
magnitude is increased.
General observations:
Here are few of my general observations:
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As we increase velocity the flows Renold no. increases, seeing practically the
flow have more disturbances and it forms the vortex.
At greater viscosity it is vice-versa, there is less disturbance.
Hence proving:
One more thing I observed that when we make the boundary bigger our
simulations are effected, very much as shown.