Re: [deal.II] Re: Postdoc Position at Clemson University

[Chinedu Nwaigwe]

Dear Professor,
I am interested in this position. Can I apply directly to you?
Getting three reference letters may be difficult at the moment but I know
my Referees would respond if you contact them directly. So, can I apply
directly to you with my CV and a cover letter only?

Attached is my CV and I look forward to hearing from you.

Regards,
Chinedu

On Sat, Apr 23, 2022, 6:52 PM Timo Heister  wrote:

> Hi all,
>
> I am still looking to hire a postdoc and just extended the application
> deadline. Please forward this opening to people who might be
> interested.
>
> Thanks.
>
> On Tue, Mar 22, 2022 at 10:30 PM Timo Heister  wrote:
> >
> > Hi all,
> >
> > I am hiring a postdoc to work on the Finite Element Method and High
> > Performance Computing related to deal.II and ASPECT. Expertise in
> > solvers (multigrid), CFD, and visualization is a plus.
> > The official ad is here: https://apply.interfolio.com/104441
> >
> > Please feel free to reach out to me!
> >
> > Best,
> > Timo Heister
> >
> > --
> > Timo Heister
> > http://www.math.clemson.edu/~heister/
>
>
>
> --
> Timo Heister
> http://www.math.clemson.edu/~heister/
>
> --
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> .
>

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chineduCVfull.pdf
Description: Adobe PDF document

Re: [deal.II] About Darcy-Brinkman-Forchheimer equation discretization

[Chinedu Nwaigwe]

On Sat, Sep 28, 2019, 03:41 FU  wrote:

> Hi，
> I want to solve the problem about Darcy-Brinkman-Forchheimer equations,
> but don't know how to discretizate this equation.
>
> [image: Darcy equation.png]
>
> This equation has a similar N-S equation. But the discretization of the
> last item of the equation and the programming statements are somewhat
> unclear.
>
>
> Yours，
>
> FU
>
> --
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> 
> .
>

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Re: [deal.II] About Darcy-Brinkman-Forchheimer equation discretization

[Chinedu Nwaigwe]

Hi FU,
I think,  the first step would be to multiply the entire equation by
epsilon/rho. Semi-implicit treatment of the last term might work. That
means to evaluate everything within the bracket at old time step n and
evaluate the u factor at new time step n+1.  Hope that helps.

Chinedu

On Sat, Sep 28, 2019, 03:41 FU  wrote:

> Hi，
> I want to solve the problem about Darcy-Brinkman-Forchheimer equations,
> but don't know how to discretizate this equation.
>
> [image: Darcy equation.png]
>
> This equation has a similar N-S equation. But the discretization of the
> last item of the equation and the programming statements are somewhat
> unclear.
>
>
> Yours，
>
> FU
>
> --
> The deal.II project is located at http://www.dealii.org/
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> https://groups.google.com/d/forum/dealii?hl=en
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> 
> .
>

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Re: [deal.II] Temperature osscilations for low thermal diffusivity materials

[Chinedu Nwaigwe]

Wolfang is right.  Negligible values of diffusion or thermal coefficients
lead to a compete change in the physics of the problem.  In that case if
there are source terms the solution might become negative and if there is
no source it will become steady. Things might get worse if advection term
is involved.







On Mon, May 27, 2019, 21:59 Wolfgang Bangerth  On 5/27/19 11:01 AM, Muhammad Mashhood wrote:
> >  I am working with deal.ii step-26 to implement
> temperature
> > dependent thermal diffusivity. Currently for thermal diffusivity values
> >
> > order of 1e-2 the results are quit satisfactory but if I use the low
> thermal
> > diffusivity values like the order of 1e-6 to 1e-3, I get temperature
> > oscillations (temperature going to -ve value even with all positive
> > temperature initial and boundary conditions in domain and at boundaries).
> > If anyone has faced the same issue in thermal conduction simulations or
> knows
> > the criteria to keep simulation stable in terms of thermal diffusivity,
> time
> > step and mesh size then kindly suggest and share the opinion. Thank you
> in
> > advance!
>
> In the limit of no thermal diffusivity, your equation ends up as an
> ordinary
> differential equation and that means that you lose stability in the H^1
> norm
> -- in other words, you will get oscillations. That's just part of the
> nature
> of the equation.
>
> What is the situation you are trying to model that leads to such a small
> diffusivity?
>
> Best
>   W.
>
>
> --
> 
> Wolfgang Bangerth  email: bange...@colostate.edu
> www: http://www.math.colostate.edu/~bangerth/
>
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> .
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>

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Re: [deal.II] Cooperation proposition

[Chinedu Nwaigwe]

Yes,  I am interested.

On Wed, Dec 5, 2018, 03:53 BornToCreate  wrote:

> Hi
>
> I'm looking for people passioned in programming and Science generally geeks
>
> I am after initial conversation with Investor
>
> Profile of my company is Tooling, Prototyping, 3d Printing and HPC in the
> future military equipment production
>
> Initial plan is to locate my company in Jelenia Góra in south Poland (from
> the car pot might be visible moutains)
>
> Here It is me https://www.facebook.com/je.zier.1 /
> https://kjezier.wixsite.com/portfolio
>
> Main initiatinon phase will start in q3 2019
>
> Write me an email
> *to kjezi...@protonmail.com  and ask me a
> questions*
>
> --
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