# AQWA Problem

Discussion in 'Software' started by Saeed.B, Apr 19, 2017.

1. Joined: Apr 2017
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### Saeed.BJunior Member

Hey everybody
I'm beginner with AQWA, but I need it for my master thesis. My thesis is bout an moored FPSO. when i run AQWA with a Geometry, this error comes:

ELEMENTS MUST BE AT LEAST 1.000 * FACET RADIUS APART - ELEMENT 3887 VIOLATES THIS CONDITION

2. Joined: Mar 2010
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Location: Varna/Hamburg

### b1ck0Senior Member

I am not 100% sure why you get this error but you can just re-mesh it may solve it, unless you have very thin body in the water ...

3. Joined: Apr 2017
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### Saeed.BJunior Member

well, I did. but it doesn't changed. this error comes up again. and by "very thin body in the water" you mean low draft, no it's not, at least 12 meter draft (even in comparison with other dimensions it's not low).

thanks by the way

4. Joined: Mar 2010
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Location: Varna/Hamburg

### b1ck0Senior Member

By very thin body in the water I mean that you have two (or more) surfaces/plates which are very close to each other (or maybe it's only 1 surface). In AQWA your surfaces must "add-up" to a displacement body, in other words they need to enclose some volume.

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### Saeed.BJunior Member

You mean I need a enclosed surface?
A Body with empty inside?

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### nsefuiNew Member

Maybe you can choose this option?Hydrodynamic Diffraction-Analysis Settings(details)-Common Analysis Options-choose the Ignore Modelling Rule to YES.

I'm a beginner in AQWA.So I don't know whether it's the right solution for this problem.

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### Saeed.BJunior Member

Would you please take a screenshot for me?
I don't know how to do it.

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### SriNew Member

You are right..it works with this modelling option

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