about this problem , I have followed two ways, ( one way FSI & two way FSI ) but still am getting some issues:
- The fluid effect on natural frequency of the pipe has been obtained, but the effect of fluid properties such as pressure and velocity showed no effect on final result of natural frequency when I changed them. (why?)
The fluid basically adds mass to the system. Mass and inertia influences the resonance frequencies of the pipe. Pressure and velocity (two sides of the same thing through Bernopullis equation) does not unless the pipe walls are streched or the shape of the pipe is changed. If you change the density of the fluid, you should see changes.
Yes Sir, definitely right. the mass and inertia of the fluid influences the resonance frequencies of the pipe induce it to decrease, I was just wondering if we play with pressure and velocity in particular for the same structure, whether it has effect or not.
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