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- Path: sparky!uunet!rcwusr.bp.com!lakerb
- From: lakerb@rcwusr.bp.com
- Newsgroups: sci.geo.fluids
- Subject: Re: Overpressure Wavefront Analysis
- Message-ID: <1992Nov22.191901.42@rcwusr>
- Date: 22 Nov 92 19:19:01 -0600
- References: <1ek63aINNjt8@matt.ksu.ksu.edu>
- Organization: BP Research, Cleveland, OH (USA)
- Lines: 59
-
- In article <1ek63aINNjt8@matt.ksu.ksu.edu>, lyn@matt.ksu.ksu.edu (Myself) writes:
- > [note - I have previously posted this on rec.pyrotechnics, who suggested I
- > try this group]
- >
- > I am looking for formulae / equations / help useful for determining the
- > form of abnormalities on the surface of an expanding wavefront caused by
- > a medium-scale detonation.
- > In normal english:
- > Assuming and 'ideal' chemical detonation, with the explosive undergoing
- > complete and balanced core ---> surface combustion, in an identical - gradient
- > atmosphere, the resulting shockwave / overpressure wavefront would be a perfect
- > sphere. Aside from the explosive itself, the surface of the sphere is deformed
- > in a real atmosphere by variences in the pressure gradients of the surrounding
- > atmosphere - 'eddies', or air currents - I need to know if there is a way to
- > determine what the shape of the deformations in the surface of the shockwave
- > would be (yes, I know that they would be miniscule, and swamped by the shockwave
- > itself - that is why I cannot do this empiracly!). I know that this gets very
- > complex in a rather annoyingly short time, but I need to know if it is possible
- > to do without a CRAY, even for a small, single or double eddy simulation.
- > The things I need specifically are :
- > A) Formulae or equations for the fluid dynamics
- > B) Suggestions for implementing A in a reasonable manner
- > C) Any miscellaneous other help available
- >
- > Thank you all in advance, and gratituedes for reading this post,
- >
- > Myself (lyn@matt.ksu.ksu.edu)
- > StormWind @ kids MUSH
- > VERY amateur visualization programmer
- > And many other irreleavant things
- >
- > P.S. This is completely theoretical, and as far as I can see, does not have any
- > scientific value, other than edifying myself. (I can, however, post
- > any results that may come up, if enough interest is shown)
- >
- >
- >
- > --
- > This was brought to you by Myself(lyn@matt.ksu.ksu.edu) who is all things here.
- > Head of Synergy Systems, a non-official group of aspiring hackers creating and
- > distributing software for the common good. Head office:Terra, Sol system. We
- > Flames accepted-and returned with interest and intelligence compounded.
-
- Suggest you contact the Public Information Officer at the US Bureau of Mines in
- Bruceton, Pa. They have been exploding and modeling explosions for decades.
-
- Another contact is the Christian Mickelsen Institute in Bergen, Norway.
-
- The Center for Chemical Process Safety of the American Institute of Chemical
- Engineers (16th St??), Washington, DC. have held symposia (published)
- containing work on explosion modeling.
-
- The Journal of Hazardous Materials, Journal of Fluid Flow Research, etc. are
- other sources.
-
- Rob Lake
- BP Research
- lake@rcwcl1.dnet.bp.com
-
-