PipeFlow L4 Simple
Created Wednesday 12 June 2013
A model for a fluid flow in a pipe. A static momentum balance is applied and the kinetic energy terms are neglected. Energy storage in the surrounding wall is not part of the model.
1. Purpose of Model
This model is appropriate if the flow velocities are considerable below the speed of sound and if sound wave effects are negligible. If energy storage in the surrounding wall is of interest consider the combination with Basics:ControlVolumes:SolidVolumes:CylindricalThinWall L4 or Basics:ControlVolumes:SolidVolumes:CylindricalThickWall L4
2. Level of Detail, Physical Effects Considered and Physical Insight
2.1 Level of Detail
Referring to Brunnemann et al. [1], this model refers to the level of detail L4 because the system is modelled with the use of balance equations, which are spatially discretised over the component. The discretisation can be defined by the user.
2.2 Physical Effects Considered
- dynamic energy balance for each control volume neglecting kinetic energy terms
- dynamic mass balance for each control volume
- static momentum balance, reduced to the pressure terms coming from friction and geostatic effects
- heat transfer to a heat port
2.3 Level of Insight
Heat Transfer
Friction Pressure Losses
3. Limits of Validity
...
4. Interfaces
5. Nomenclature
6. Governing Equations
6.1 System Description and General model approach
6.2 General Model Equations
Energy Conservation
Mass Conservation
Momentum Conservation
7. Remarks for Usage
8. Validation
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
- 03.03.2013 - v.0.1 - initial implementation - Johannes Brunnemann, XRG Simulation
- 24.04.2017 - v1.2.2 - added noEvent to actualStream operator
Backlinks: ClaRa:A User Guide:Revisions:v1.7.0 ClaRa:SubSystems:Furnace:BurnerSlice L4 ClaRa:SubSystems:Furnace:ConvectiveSlice L4 ClaRa:SubSystems:Furnace:FreeboardSlice L4 ClaRa:SubSystems:Furnace:HopperSlice L4 ClaRa:SubSystems:Furnace:HopperSlice L4 AdditionalAir ClaRa:Basics:ControlVolumes:SolidVolumes:NTU L3 standalone ClaRa:Components:VolumesValvesFittings:Pipes:TubeBundle L4H1