Author Topic: Fire Engineering - "Matrix Solvers"?  (Read 4600 times)

Offline CivvyFSO

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Fire Engineering - "Matrix Solvers"?
« on: December 19, 2007, 04:18:02 PM »
I have been trying to find information regarding the use of matrix solvers in fire engineering. Google doesn't know, Jeeves is a bit thick and the qualified fire engineers I have asked so far haven't been able to help me.

I have no choice but to appeal to you lot for help.

It's a sad day in my office.

Offline Benzerari

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Fire Engineering - "Matrix Solvers"?
« Reply #1 on: December 19, 2007, 05:42:08 PM »
Quote from: CivvyFSO
I have been trying to find information regarding the use of matrix solvers in fire engineering. Google doesn't know, Jeeves is a bit thick and the qualified fire engineers I have asked so far haven't been able to help me.

I have no choice but to appeal to you lot for help.

It's a sad day in my office.
I think this may help: http://lurbano-5.memphis.edu/GeoMod/index.php/Matrix_solvers. just need to know how to apply it for fire engineering...

However, I guess you are trying to deal with more 'fire science' related subject, are you trying to use 'matrix solver' to simulate the fire growth, behaviour and spread... if yes try first to contact some engineers from investigation units, they may have engineers highly educated in mathematics, or the best one who can give such help is some researcher in the 'physics of fire' also called 'fire modeling', one of the rare researchers I have learnt many things from is, 'Dr V. Babrauskas', he is an american researcher, and his prediction in fire modeling are much appreciated, you may find out how to contact him if you check through internet for his publications ...

Offline John Webb

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Fire Engineering - "Matrix Solvers"?
« Reply #2 on: December 19, 2007, 07:40:38 PM »
There are two uses of the term 'Matrix Solvers' which I have seen used in fire safety engineering.
The first is the purely mathematical one used for fire modelling, as in CFD (computational fluid dynamics).
Major UK players in this are BRE, the universities of Greenwich, Leeds and Edinburgh. A number of consultants also use CFD, often as developed by someone else.
The second use is with reference to the interlinked parts of the BS on Fire Safety Engineering. Now I only have the DD0000 (BSI 96/543 099) which came out not long before I retired from BRE in 1997, but my copy talks of the 'information bus' (Fig 3 on page 15) which I have heard referred to as a matrix. In this case the 'matrix solvers' are all the bits of the BS which feed in and out of this matrix to enable the FSE solution to be reached and to be checked. It's not standard terminology within the BS as far as I am aware.
I hope this may be of assistance to you.
John Webb
Consultant on Fire Safety, Diocese of St Albans
(Views expressed are my own)

Offline CivvyFSO

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Fire Engineering - "Matrix Solvers"?
« Reply #3 on: December 20, 2007, 09:57:42 AM »
Benzerari, that website is the type of result I have found during google searches, basically they are programs to solve simultaneous equations using matrices and do other operations on matrices like finding determinants etc.

I think it is more related to what you mentioned second, modelling fire growth, probabilities of fire spread and such. (Actually using matrices to solve problems, rather than solving matrices.)

John, I think the CFD one is a good example and I will also get hold of DD0000 to see if it looks like something I can use.

Thanks to both of you.

Offline Benzerari

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Fire Engineering - "Matrix Solvers"?
« Reply #4 on: December 20, 2007, 06:28:50 PM »
Quote from: CivvyFSO
Benzerari, that website is the type of result I have found during google searches, basically they are programs to solve simultaneous equations using matrices and do other operations on matrices like finding determinants etc.

I think it is more related to what you mentioned second, modelling fire growth, probabilities of fire spread and such. (Actually using matrices to solve problems, rather than solving matrices.)

John, I think the CFD one is a good example and I will also get hold of DD0000 to see if it looks like something I can use.

Thanks to both of you.
I think then your enquiry is more and purely 'research issue' rather than solving a simple 'fire model', just out of interest there are some scientific articles you may have to consult from scientific journals, but as you probably know most of the articles are not free, some times it needs membership to download them... etc

How ever as far as I am aware, researcher in fire modeling use normally differential, probability and statistics equations too, not just matrices, there are so many cases of fire modelling, depending up so many parameters and variables, i.e. the kind of material to be burnt, the quantity of oxygen available, the size of the room and its physical  arrangement.... and so fourth, and a single and simple model can never determine some forms of fires, but when combining together some simple models you can achieve to certain form of a complex and computational model of real form of fire, that can predict its start, growth, and direction of spread….

Although to avoid what have been already done, a fire data handbook has already been developed to be used for fire inputs …. as I said previously one of the rare researcher and leader in fire science, who developed such fire handbook is Dr V Babrauskas, also it is better if you can get the software version of the handbook, to avoid a long and tedious calculations....

Mean while, I do believe you know what you are looking for…  :)