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- From: ME028A@cranfield.ac.uk
- Original-To: REDUCE-FORUM <REDUCE-FORUM@rand.org>
- Subject: Vector and tensor manipulation
- Date: Tue, 05 Jan 93 09:07:10 -0800
- Sender: hearn@rand.org
- Newsgroups: fj.mail-lists.reduce
- Distribution: fj
- Sender: news@ccut.cc.u-tokyo.ac.jp
- Approved: fj.mail-lists.reduce@ccut.cc.u-tokyo.ac.jp
- Lines: 39
-
- Hello,
-
- I have a simple question about a reduce application. My apologies if this
- question has been asked before but I am a relatively new user of Reduce.
-
- I am interested in manipulating the Navier-Stokes equations in arbitrary
- coordiate systems - I wish to investigate the use of different base vectors in
- terms of number of terms and simplicity for later development of a new CFD
- (Computational fluid dynamics) program. I would like to represent the velocity
- vector in contra/covariant/cartesian forms and mixed versions of these.
-
- We have Reduce3.3 here at Cranfield, though I am relatively inexperienced. I
- dont see an easy way of carrying out the above task using Reduce. I have
- investigated the EXCALC package but unfortunately I am not familiar with the
- terminology that is used. What I thought I needed was a package that could
- manipulate vectors and tensors in arbitrary coordinate systems which would then
- expand the equations in terms of the indices. There is a vector package in
- reduce-netlib but this is limited to orthogonal coordinates.
-
-
- Any comments or suggestions would be really welcome.
-
- Thanks in advance,
-
-
-
- Dr Philip Rubini
-
- School of Mechanical Engineering
- Cranfield Institute of Technology
- Cranfield
- Bedfordshire MK43 0AL
- ENGLAND
-
- Tel. +44 (0)234 754649
- Fax. +44 (0)234 750728
-
- Email: p.rubini@cranfield.ac.uk
-
-