Advanced

Modeling of a Boiler Pipe with Two-Phase Flow Instabilities

Eborn, Jonas LU and Åström, Karl Johan LU (2000) In Modelica Workshop 2000 Proceedings p.79-88
Abstract
Tubes with boiling are common elements of many processes.

They appear in steam generators and refrigerators and many other systems.

The behavior of such systems is complicated and many physical phenomena

are involved. It has for example been observed that different types of

instabilities can occur. In this paper we will discuss modeling of tubes with

boiling. As an application we will discuss an instability phenomenon due to

pressure oscillations that has been observed experimentally in many different

situations. We will first derive a simple analytical model which is able to

capture the oscillations qualitatively. The simple model also gives insight into

the... (More)
Tubes with boiling are common elements of many processes.

They appear in steam generators and refrigerators and many other systems.

The behavior of such systems is complicated and many physical phenomena

are involved. It has for example been observed that different types of

instabilities can occur. In this paper we will discuss modeling of tubes with

boiling. As an application we will discuss an instability phenomenon due to

pressure oscillations that has been observed experimentally in many different

situations. We will first derive a simple analytical model which is able to

capture the oscillations qualitatively. The simple model also gives insight into

the mechanisms that generate the oscillations. A more complicated model

is then built using a recently developed model base library in Modelica. A

comparison between the simple and the complicated model is also given (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
in
Modelica Workshop 2000 Proceedings
pages
79 - 88
language
English
LU publication?
yes
id
d9d50ee7-c16a-416f-ad0c-1a4f8448f634 (old id 538037)
alternative location
http://www.modelica.org/events/workshop2000/proceedings/Eborn.pdf
date added to LUP
2007-09-17 09:02:42
date last changed
2016-04-16 11:32:02
@misc{d9d50ee7-c16a-416f-ad0c-1a4f8448f634,
  abstract     = {Tubes with boiling are common elements of many processes.<br/><br>
They appear in steam generators and refrigerators and many other systems.<br/><br>
The behavior of such systems is complicated and many physical phenomena<br/><br>
are involved. It has for example been observed that different types of<br/><br>
instabilities can occur. In this paper we will discuss modeling of tubes with<br/><br>
boiling. As an application we will discuss an instability phenomenon due to<br/><br>
pressure oscillations that has been observed experimentally in many different<br/><br>
situations. We will first derive a simple analytical model which is able to<br/><br>
capture the oscillations qualitatively. The simple model also gives insight into<br/><br>
the mechanisms that generate the oscillations. A more complicated model<br/><br>
is then built using a recently developed model base library in Modelica. A<br/><br>
comparison between the simple and the complicated model is also given},
  author       = {Eborn, Jonas and Åström, Karl Johan},
  language     = {eng},
  pages        = {79--88},
  series       = {Modelica Workshop 2000 Proceedings},
  title        = {Modeling of a Boiler Pipe with Two-Phase Flow Instabilities},
  year         = {2000},
}