Advanced

Analysis of Development of Heat in a Diesel Engine Module

Lagerblad, Olle (2012) In ISRN LUTMDN/TMHP--12/5245--SE
Department of Energy Sciences
Abstract
Kockums AB is a company with long experience from developing and manufacturing submarines. At
the moment they are running a grand development project called A26 that will be a new generation of
submarines. There will be a radical change made to the energy systems on the boats regarding the
diesel engines. The latest produced submarines have used two large diesel engines from MTU, but to
keep repair and installation costs down three smaller diesel engines from Volvo Penta are considered.
The engines will be placed in enclosures for fire and safety reasons, which need to be thoroughly
investigated.
The diesel engines require air for their combustion, which is obtained through a pipe system leading
from the snorting mast. The air... (More)
Kockums AB is a company with long experience from developing and manufacturing submarines. At
the moment they are running a grand development project called A26 that will be a new generation of
submarines. There will be a radical change made to the energy systems on the boats regarding the
diesel engines. The latest produced submarines have used two large diesel engines from MTU, but to
keep repair and installation costs down three smaller diesel engines from Volvo Penta are considered.
The engines will be placed in enclosures for fire and safety reasons, which need to be thoroughly
investigated.
The diesel engines require air for their combustion, which is obtained through a pipe system leading
from the snorting mast. The air passes into modules surrounding the engines before the engine
consumes it. As a result the air encounters the hot engines and gets heated before it is consumed and
there is a risk that the temperatures of the air will become higher than the limitations stated by the
supplier of the engines. The main problem of this thesis is to study the heat generation of the air within
the module to see if the temperature increase will be critical
To solve the problem simulation has been set up in Ansys Fluent package where the turbulence model
realizable k −ε has been used. The work suggests that the heat developed is not sufficient to motivate
an extra cooling system in the module. Although there are scenarios that need further investigation
where there can be a need for cooling of the air in the module. Such a scenario is when the engine
stops and the air stands still and gets heated by the engine (Less)
Please use this url to cite or link to this publication:
author
Lagerblad, Olle
supervisor
organization
year
type
H1 - Master's Degree (One Year)
subject
keywords
Heat transfer, CFD analysis, diesel engine, Kockums AB, turbulent flow, air flow, temperature increase
publication/series
ISRN LUTMDN/TMHP--12/5245--SE
language
English
id
2541277
date added to LUP
2012-05-16 15:38:10
date last changed
2012-05-16 15:38:10
@misc{2541277,
  abstract     = {Kockums AB is a company with long experience from developing and manufacturing submarines. At
the moment they are running a grand development project called A26 that will be a new generation of
submarines. There will be a radical change made to the energy systems on the boats regarding the
diesel engines. The latest produced submarines have used two large diesel engines from MTU, but to
keep repair and installation costs down three smaller diesel engines from Volvo Penta are considered.
The engines will be placed in enclosures for fire and safety reasons, which need to be thoroughly
investigated.
The diesel engines require air for their combustion, which is obtained through a pipe system leading
from the snorting mast. The air passes into modules surrounding the engines before the engine
consumes it. As a result the air encounters the hot engines and gets heated before it is consumed and
there is a risk that the temperatures of the air will become higher than the limitations stated by the
supplier of the engines. The main problem of this thesis is to study the heat generation of the air within
the module to see if the temperature increase will be critical
To solve the problem simulation has been set up in Ansys Fluent package where the turbulence model
realizable k −ε has been used. The work suggests that the heat developed is not sufficient to motivate
an extra cooling system in the module. Although there are scenarios that need further investigation
where there can be a need for cooling of the air in the module. Such a scenario is when the engine
stops and the air stands still and gets heated by the engine},
  author       = {Lagerblad, Olle},
  keyword      = {Heat transfer,CFD analysis,diesel engine,Kockums AB,turbulent flow,air flow,temperature increase},
  language     = {eng},
  note         = {Student Paper},
  series       = {ISRN LUTMDN/TMHP--12/5245--SE},
  title        = {Analysis of Development of Heat in a Diesel Engine Module},
  year         = {2012},
}