Modelling fire in engine

March 11, 2002, 08:07

Hi,

Does anyone have an idea of how much heat is generated when a engine catche fire ?

Is it 10 MW, 15 MW or less ?

Kind Regards

Jens

March 11, 2002, 08:55

How much fuel is involved? What is the burning area? What kind of engine? fuel and Sizes? You are asking a question with no solid bases. So your question is difficult to answer.

Tingguang

March 11, 2002, 09:00

Hi,

It is a diesel engine from a train.

The fuel tank is locate at a distance from the engine.

The is max. 2 l of diesel at the engine.

Regards

Jens

March 11, 2002, 18:27

It is an easy job now. Find the mass burnning rate of diesel fuel, which is g/s.m^2. The heat of combustion is usually accessible in any fire dynamics book. The dimension is over-all surface. Assume all surface is involved in fire, then total surface area (except the bottom) times mass burning rate times Heat of combustion, you will get firesize. Assume there is no air flow around. You can find some parameters at, or others. D.Drysdale, An Introduction to Fire Dynamics, 1995

Tingguang

March 11, 2002, 08:07	Modelling fire in engine	#1
Jens Guest Posts: n/a	Hi, Does anyone have an idea of how much heat is generated when a engine catche fire ? Is it 10 MW, 15 MW or less ? Kind Regards Jens

March 11, 2002, 08:55	Re: Modelling fire in engine	#2
tingguang Guest Posts: n/a	How much fuel is involved? What is the burning area? What kind of engine? fuel and Sizes? You are asking a question with no solid bases. So your question is difficult to answer. Tingguang

March 11, 2002, 09:00	Re: Modelling fire in engine	#3
Jens Guest Posts: n/a	Hi, It is a diesel engine from a train. The fuel tank is locate at a distance from the engine. The is max. 2 l of diesel at the engine. Regards Jens

March 11, 2002, 18:27	Re: Modelling fire in engine	#4
tingguang Guest Posts: n/a	It is an easy job now. Find the mass burnning rate of diesel fuel, which is g/s.m^2. The heat of combustion is usually accessible in any fire dynamics book. The dimension is over-all surface. Assume all surface is involved in fire, then total surface area (except the bottom) times mass burning rate times Heat of combustion, you will get firesize. Assume there is no air flow around. You can find some parameters at, or others. D.Drysdale, An Introduction to Fire Dynamics, 1995 Tingguang

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Car park ventilation and impulse fans	guillaume	Phoenics	9	October 27, 2015 06:57
Fluent : Fire modelling	Manoj Kumar	FLUENT	7	January 13, 2006 10:42
Pool fire modelling	Peter	CFX	0	May 31, 2004 06:03
modelling airflow through an inlet restrictor on a four stroke engine	mike ede	Main CFD Forum	0	October 8, 1999 10:06
SMARTFIRE: A new interactive fire field modelling CFD code.	John Ewer	Main CFD Forum	0	July 7, 1998 04:46