[Warlord]

Hello guys,

I just started to use Ansys. I am trying to simulate a water flowing through a vessel. My problem is that a very strange thing is happening. The water is bending the vessel in a very strange way, please see the attached image. And also, why the fluid domain on CFD Post is not deformed (see link below)? Since the solid is deformed, the fluid domain should be deformed, right?

Vessel dimensions:
-This is a cylinder of height 0.05m, radius 0.005 and thickness 0.001.

Vessel material:
-Right now it just the default: Structural steel. Later, after everything is ok, I'll create an artery material.

Boundary conditions:
-Inlet is: I am using a UDF to generate a pressure pulse, see below.

 #include "udf.h"
 
 DEFINE_PROFILE(unsteady_pressure, thread, position)
 {
    face_t f;
    real t = CURRENT_TIME;
    begin_f_loop(f, thread)
      {

        F_PROFILE(f, thread, position) = t > 0.003? 0.0 : 1333.2;
      }
    end_f_loop(f, thread)
   
 }

- Outlet is pressure = 0.0

Time step is 5e-5

How come water is bending the steel??

Obs.: I am using ansys 16.2 and 17.1, both give me the same result.

Any help is welcome!

Geometries:
https://drive.google.com/file/d/0B1k...ew?usp=sharing

Deformed tube:
https://drive.google.com/file/d/0B1k...ew?usp=sharing

Fluid Domain on CFD Post
https://drive.google.com/open?id=0B1...WZXRXpVcU03SzQ

[Warlord]

Problem solved, everything is correct. The problem grew out of the fact that the image from Mechanical is very misleading. The visual deformation of the tube do not corresponds to the actual deformation.