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Ansys Learning Forum › Forums › Discuss Simulation › Fluids › two interraction body in AQWA › Reply To: two interraction body in AQWA

October 24, 2024 at 10:50 am
Nese.Halilbese
Subscriber

Thank you so much for your responce.

I have a submerged piston inside the cylinder. As you suggested I tried to define fenders the keep the piston inside the cylinder. I have two component one is piston, and the other one is cylinder. The cylinder's inner radious is R1=50 mm, and piston's radious is R2=48 mm. Piston's top surface distance to the waterline is H1=155 mm, and Piston's bottom surface distance to the waterline is H2=175 mm.

I defined 8 connection point for each component to define fenders.For cylinder they are: (R1,0,-H1),(0,R1,-H1),(-R1,0,-H1),(0,R1,-H1), and for the piston they are:(R2,0,-H1),(0,R2,-H1),(-R2,0,-H1),(0,R2,-H1). These are for the top side I also did the some thing for the bottom side with H2. 

1-Are they should be floating fender or fixed?Can I define the distance between piston and cylinder like 2 mm. Is this gap to small?

2-To get result from Hydrodynamic Diffraction I had the delete one of the inner surface. If I dont delete the surface , I had to divide into two component and use to joint. But with joint, I guess I had another problem during the Hydrodynamic responce so this time I just delete it.

 

3- Should I define Interracting structure groups to get result in Hydrodynamic responce.

4-Diactivated freedom for both structure on X,Y,RX,RY. Regular wave is defined. What is missing?

Thanks for your time and effort.