Thunderhead Engineering Forum

Public Forum => PyroSim => Topic started by: agro on December 12, 2018, 02:02:40 pm

Title: ERROR: VENT 1 must be attached to a solid obstruction
Post by: agro on December 12, 2018, 02:02:40 pm
Smokevies tells me the following error:

ERROR: VENT   1 must be attached to a solid obstruction (CHID: Local_vo1_H2)

The "vent burner" is on an obstruction (slab) 20 cm thick.
What is the error?
Title: Re: ERROR: VENT 1 must be attached to a solid obstruction
Post by: Jon Albrecht on December 13, 2018, 09:29:10 am
agro,

It's impossible to know based on the description you've provided. Thunderhead Engineering provides a number of tutorials that help get you started in working with PyroSim and FDS. I'd recommend starting with them to familiarize yourself with the basics.

https://www.thunderheadeng.com/pyrosim/tutorials/

Regards,

Jon Albrecht
Thunderhead Engineering
Title: Re: ERROR: VENT 1 must be attached to a solid obstruction
Post by: Dave McGill on December 14, 2018, 07:17:52 am
Hi,

Ensure that the surface of the solid obstruction and the plane of the vent line up with the mesh, and that the vent doesn't extend over the edge of the obstruction or extend into another obstruction.

Dave
Title: Re: ERROR: VENT 1 must be attached to a solid obstruction
Post by: Erick Showatler on February 06, 2019, 04:04:57 pm
Also, I have noticed that sometime the object size is truncated to match the cell size.  This will occasionally leave vents floating in space - not attached to any object.