Subject: [CFD Jobs Database] Monthly Summary, December
From: jola@tfd.chalmers.se
Date: Thu, 02 Jan 1997 11:51:05 -0600
This is a monthly summary of all new jobs in the CFD Jobs Database -
a free WWW based service where anyone can advertise open positions
in the field of Computational Fluid Dynamics. The CFD Jobs Database
can be found at:
http://www.tfd.chalmers.se:8080/CFD_Jobs/index.phtml
Please visit the WWW page for further details about the jobs.
The database also contains a number of old job offers from previous
months, which are still open.
New or Modified Jobs in December:
================================
Research Scientist
Combustion Research & Flow Technology, Inc.
Permanent Position in Industry
USA, PA, Dublin (Philadelphia Suburb)
Research Associate, Large-Eddy Simulation
University of Maryland, Dept. of Mechanical Engineering
PostDoc Position
USA, MD 20742, College Park
CFD Applications Engineers
CFD Research Corporation
Permanent Position in Industry
USA, Alabama, Huntsville
Computational Fluid Dynamics (CFD) Engineer
TYBRIN Corporation, ACSES
Permanent Position in Industry
USA, Florida, Ft Walton Beach
Technical Support Team Leader
Centric Engineering Systems
Permanent Position in Industry
USA, Michigan, Detroit
Numerical Linear Algebra Developer
Centric Engineering Systems
Permanent Position in Industry
USA, California, Santa Clara
Research Associate
National Research Council
PostDoc Position
Canada, Ottawa
Process Modeling Engineer
Howmet Research Center
Permanent Position in Industry
USA, Michigan, Whitehall
Doctoral Candidate Position
ETH-Zurich, Department of Mechanical and Process Engineering
PhD Studentship
Switzerland, Zurich
CFD Analyst
Automated Analysis Corporation
Permanent Position in Industry
USA, Michigan, Ann Arbor
Software Development Engineer
Scientific Software - Intercomp
Permanent Position in Industry
USA, Colorado, Denver
/-----------------------------------------------------------------------\
Jonas Larsson (jola@tfd.chalmers.se) Dept. of Thermo & Fluid Dynamics
Phone: +46-31-7721388 Chalmers University of Technology
Fax: +46-31-180976 S-412 96 Gothenburg, Sweden
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Subject: Acoustic effects of absorptive materials
From: drr@kumo.intercenter.net
Date: 02 Jan 1997 00:52:59 -0500
I need a little bit of help in developing a qualitative
feel for the effects of acoustically absorptive materials
(various foams, fluffs, and insulations). Specifically,
I was wondering what effect they might have on the speed
of sound in the region they occupy.
I am also interested in how to model them for computation.
Intuitively, I would assume that subtracting some amount
of energy from the wave equation in the region would be
sufficient, but (as the vagueness of my statement shows)
that is probably not quite correct.
The qualitative feel is more important to me immediately, as
(surprise) I am working on a rather odd subwoofer design.
However, I have an ongoing project where I am developing
an acoustical simulation package targeted at the speaker
design problem (hence the second question). I've been using
Dudley Towne's _Wave_Phonemena_ as my primary source, but
its both quite old (1967), and he only treats the simpler
acoustical conditions.
Thanks in advance -
david rush
mailto:kumo@intercenter.net
Subject: Re: pressure
From: "HWINC"
Date: 3 Jan 1997 15:14:35 GMT
Albertino Bigiani wrote in article
> Is pressure (force/surface) a scalar or vector?
Hi Albertino,
The general consensus at our office is that pressure is a vector quantity,
because it is:
force (a vector quantity) per area.
By the way, the only scalars we could come up with are time, distance, and
mass (mass is _not_ weight).
-Tony Falcone
falcon@cooper.edu
Subject: Re: pressure
From: wshill@world.std.com (Wayne S. Hill)
Date: Fri, 3 Jan 1997 15:37:16 GMT
On 3 Jan 1997 15:14:35 GMT, HWINC (hwinc@thoughtport.com) said...
>
>Albertino Bigiani wrote in article
>> Is pressure (force/surface) a scalar or vector?
>
>Hi Albertino,
>The general consensus at our office is that pressure is a vector
>quantity, because it is:
>force (a vector quantity) per area.
>
>By the way, the only scalars we could come up with are time, distance,
>and mass (mass is _not_ weight).
>-Tony Falcone
>falcon@cooper.edu
Actually, pressure is defined as the average of the three principal
components of the stress tensor, and is therefore a scalar. This fine
distinction comes about because you still want to be able to talk about
the pressure in a moving fluid system, in which the three principal
components in general have different values. In a static fluid system,
the three principal components equal the pressure exactly, so this
definition reduces to the desired limit.
Hope this helps.
-Wayne
_______________________________________________________________________
Dr. Wayne S. Hill wshill@world.std.com
Foster-Miller, Inc. ***Disclaimed*** 617-684-4228
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Subject: aaaa
From: Zachy_Beeri
Date: Fri, 03 Jan 1997 16:28:13 +0000
Tadeusz Liszka wrote:
>
> R&D; Engineer (Multi-phase Porous Media Flow)
> --------------------------------------------
> Position at COMCO, Austin, TX
> ------------------------------
>
> The Computational Mechanics Co., Inc. (COMCO) is in search of a suitable
> software developer for reservoir simulation R&D; work. COMCO is a
> high-tech R&D; company located in Austin, Tx and has engaged in
> pioneering research in computational mechanics (solids, fluid,
> electro-magnetism, etc.) and adaptive finite element technology for over
> a dozen years. The position is aimed mainly at software development
> leading to 3-phase/compositional reservoir flow simulation capabilities
> using adaptive finite elements. (Also see www.comco.com)
>
> The ideal candidate must possess a strong background in
> 3-phase/compositional reservoir flow simulation with adequate training
> in finite element methods. Excellent coding ability (in C and FORTRAN),
> teamwork, and self-motivation are necessary. The candidate must possess
> a Ph.D. (or a M.S. with equivalent job experience) in a field directly
> related to reservoir simulation. Hands-on experience with one or more
> commercial reservoir simulator will be a strong plus.
>
> The position is likely to become available around January-February of
> 1997.
>
> Please mail your resume to:
>
> Computational Mechanics Co., Inc.
> 7701 N. Lamar, Suite 200
> Austin, Tx 78752
> 512 467 1382 (fax)
>
> or e-mail (ascii text only, please) to:
>
> deb@comco.com
