Re: [Yade-users] [Question #695542]: Unstable advection simulaton for gas flow

2021-02-14 Thread Zoheir Khademian
Question #695542 on Yade changed:
https://answers.launchpad.net/yade/+question/695542

Description changed to:
I am trying to simulate advection with a hot gas flowing though a cold packing. 
I used this example [1] and only modified the fluid properties to represent 
vapor. I used fluid density of 0.013 kg/m3 and heat capacity of 1996 J/kgK and 
viscosity of 0.00013 pa.s. The problem is the model becomes unstable. 
I reduced the timestep by two orders of magnitude and still no luck. So, I was 
wondering if there is any other parameters I should modify to make the model 
stable. 

One more question: How can I specify different thermal properties (like
conductivity) to different spheres in the model?

Thanks - Zoheir

[1] https://gitlab.com/yade-
dev/trunk/-/blob/master/examples/ThermalEngine/flowScenario.py

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Re: [Yade-users] [Question #695542]: Unstable advection simulaton for gas flow

2021-02-14 Thread Zoheir Khademian
Question #695542 on Yade changed:
https://answers.launchpad.net/yade/+question/695542

Description changed to:
I am trying to simulate advection with a hot gas flowing though a cold packing. 
I used this example [1] and only modified the fluid properties to represent 
vapor. I used fluid density of 0.013 kg/m3 and heat capacity of 1996 J/kgK and 
viscosity of 0.00013 pa.s. The model becomes unstable. 
I reduced the timestep by two orders of magnitude and still no luck. So, I was 
wondering if there is any other parameters I should modify to make the model 
stable. 

One more question: How can I specify different thermal properties (like
conductivity) to different spheres in the model?

Thanks - Zoheir

[1] https://gitlab.com/yade-
dev/trunk/-/blob/master/examples/ThermalEngine/flowScenario.py

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[Yade-users] [Question #695542]: Unstable advection simulaton for gas flow

2021-02-14 Thread Zoheir Khademian
New question #695542 on Yade:
https://answers.launchpad.net/yade/+question/695542

I am trying to simulate advection with a hot gas flowing though a cold packing. 
I used this example [1] and only modified the fluid properties to represent 
vapor. I used fluid density of 0.013 kg/m3 and heat capacity of 1996 J/kgK and 
viscosity of 0.00013 pa.s. The model becomes unstable. 
I reduced the timestep by two orders of magnitude and still no luck. So, I was 
wondering if there is any other parameters I should modify to make the model 
stable.

Thanks - Zoheir

[1] 
https://gitlab.com/yade-dev/trunk/-/blob/master/examples/ThermalEngine/flowScenario.py

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Re: [Yade-users] [Question #695248]: 'ScGeom' object has no attribute 'connectionBody'

2021-02-14 Thread Launchpad Janitor
Question #695248 on Yade changed:
https://answers.launchpad.net/yade/+question/695248

Status: Needs information => Expired

Launchpad Janitor expired the question:
This question was expired because it remained in the 'Needs information'
state without activity for the last 15 days.

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