MeanMigrationSpeed

Created Thursday 20 March 2014

Model used to calculate a mean value for the time span needed for particles to travel through the combustion volume.

1. Purpose of Model

This model calculates a mean value for the time span needed for particles to travel through the combustion volume depending on the flue gas volume flow rates.

2. Level of Detail, Physical Effects Considered and Physical Insight

2.1 Level of Detail

Referring to Brunnemann et al. [1], this submodel refers to the level of detail L2.

3. Limits of Validity

It is assumed that the particles travel with the same speed as the mean flue gas velocity inside the volume

4. Interfaces

5. Nomenclature

6. Governing Equations

It is assumed that the particles travel with the same speed as the mean flue gas velocity inside the volume. Thus the particle velocity is calculated as follows:

Summary

to be completed...

7. Remarks for Usage

This model is applied in furnace models where combustion takes place.

9. References

[1] Johannes Brunnemann and Friedrich Gottelt, Kai Wellner, Ala Renz, André Thüring, Volker Röder, Christoph Hasenbein, Christian Schulze, Gerhard Schmitz, Jörg Eiden: "Status of ClaRaCCS: Modelling and Simulation of Coal-Fired Power Plants with CO2 capture", 9th Modelica Conference, Munich, Germany, 2012

10. Authorship and Copyright Statement for original (initial) Contribution

Author:
DYNCAP/DYNSTART development team, Copyright 2011 - 2022.
Remarks:
This component was developed during DYNCAP/DYNSTART projects.
Acknowledgements:
ClaRa originated from the collaborative research projects DYNCAP and DYNSTART. Both research projects were supported by the German Federal Ministry for Economic Affairs and Energy (FKZ 03ET2009 and FKZ 03ET7060).
CLA:
The author(s) have agreed to ClaRa CLA, version 1.0. See https://claralib.com/pdf/CLA.pdf
By agreeing to ClaRa CLA, version 1.0 the author has granted the ClaRa development team a permanent right to use and modify his initial contribution as well as to publish it or its modified versions under the 3-clause BSD License.

11. Version History

Date - Version - Description of changes - author/revisor

25.06.2013 - v0.1 - initial implementation of the model - Lasse Nielsen, TLK-Thermo GmbH
26.03.2019 - chattering countermeasures applied (smoothing function)