[CIG-LONG] CIG-LONG Digest, Vol 42, Issue 9

[Karen Paczkowski]

Hi Walter,

I see from the manual that I can make a stress boundary condition  
shaped like a Gaussian.  How can I make one that is just a linear  
gradient?  I would like to set the pressure on the bottom of the  
simulation box equal to hydrostatic pressure (rho g ymax) and then  
have the pressure linearly decrease to zero at the top of the  
simulation box.

Thanks,
Karen

On May 7, 2010, at 3:00 PM, cig-long-request at geodynamics.org wrote:

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> Today's Topics:
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>   1. Re: Low viscosity material around dike
>      (Guillaume.Duclaux at csiro.au)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Fri, 7 May 2010 05:07:35 +0800
> From: <Guillaume.Duclaux at csiro.au>
> Subject: Re: [CIG-LONG] Low viscosity material around dike
> To: <walter at geodynamics.org>, <cig-long at geodynamics.org>
> Message-ID:
> 	<F208C10EED02964CB3F9014E661F55024F11FA638F at EXWA- 
> MBX01.nexus.csiro.au>
> Content-Type: text/plain; charset="us-ascii"
>
> Folks,
>
> I'm currently out of office and I didn't bring my scaling scripts  
> with me... The NewNewtonian rheology in Gale implies some scaling  
> (in order to obtain an effective viscosity of the order of one), you  
> can't directly use values from the literature.
>
> I'll detail the scaling for each parameter in the NonNewtoninan  
> constitutive law as soon as I can acces my machine.
>
> Cheers
>
> Gilly
> ________________________________________________
>
> Dr Guillaume Duclaux
> CSIRO Earth Science and Resource Engineering
> Visiting address: ARRC, 26 Dick Perry Av., Kensington WA 6151
> Postal address: PO Box 1130, Bentley WA 6102, Australia
> Ph: + 61 8 6436 8728    Fax: + 61 8 6436 8555    Web: www.csiro.au
> ________________________________________
> From: cig-long-bounces at geodynamics.org [cig-long-bounces at geodynamics.org 
> ] On Behalf Of Walter Landry [walter at geodynamics.org]
> Sent: Thursday, 6 May 2010 23:42
> To: cig-long at geodynamics.org
> Subject: Re: [CIG-LONG] Low viscosity material around dike
>
> Taichi SATO <taichix at aori.u-tokyo.ac.jp> wrote:
>> Dear Walter,
>>
>> Thank you very much!
>> I think the value of power law constant "A" depends on material  
>> such as wet
>> basalt and dry olivine.
>> Which material do you assume by using the value, A = 1.0E-16?
>
> I got my numbers from someone else (Guillame?), and I do not know what
> he was assuming.
>
>> I can not still resolve the problem about the dike region.
>> Although I am trying to resolve this problem, please give me some  
>> ideas.
>
> Did you try submerging the dike even further?  Eventually, you should
> no longer have a dike hill.
>
> Cheers,
> Walter Landry
> walter at geodynamics.org
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> End of CIG-LONG Digest, Vol 42, Issue 9
> ***************************************