Volume Gas L2 advanced
Created Thursday 17 December 2020
Basic model of a gas volume with dynamic energy, mass and momentum balances, taking convective heat transfer and pressure losses into account.
1. Purpose of Model
The model is used as a basic model to form various components which handle gaseous media.
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 L2.
2.2 Physical Effects Considered
- Conservation of Mass
- Conservation of Energy
- Conservation of Momentum
- Reverse flow
- Heat Transport due to convection
- Pressure loss due to friction
2.3 Level of Insight
Heat Transfer
- ControlVolumes:Fundamentals:HeatTransport:Generic HT:Adiabat L2
- ControlVolumes:Fundamentals:HeatTransport:Generic HT:IdealHeatTransfer L2
- ControlVolumes:Fundamentals:HeatTransport:Generic HT:Constant L2
- ControlVolumes:Fundamentals:HeatTransport:Generic HT:CharLine L2
Pressure Loss
- ControlVolumes:Fundamentals:PressureLoss:Generic PL:NoFriction L2
- ControlVolumes:Fundamentals:PressureLoss:Generic PL:LinearPressureLoss L2
- ControlVolumes:Fundamentals:PressureLoss:Generic PL:QuadraticNominalPoint L2
Geometry
- Generic_Geometry : Generic geometry
- HollowBlock : Geometry of a hollow block
- HollowBlockWithTubes : Geometry of a hollow block with tubes inside
- Pipe_Geometry : Geometry of a pipe
3. Limits of Validity
- Steady flow.
- Fixed control volume.
- Averaging assumption violated.
- The equations imply that the outlet states equal the states in the balance equations - Not true for large volumes and high gradients.
4. Interfaces
4.1 Physical Connectors
Basics:Interfaces:GasPortIn inlet
Basics:Interfaces:GasPortOut outlet
Basics:Interfaces:HeatPort a heatOuter
Basics:Interfaces:HeatPort b heatInner
4.2 Medium Models
- Gas Medium Model at the inlet and outlet port and inside the volume.
5. Nomenclature
please see Basics:ControlVolumes:GasVolumes:VolumeGas L2
6. Governing Equations
please see Basics:ControlVolumes:GasVolumes:VolumeGas L2
For momentum balance please see Basics:ControlVolumes:FluidVolumes:VolumeVLE L4 Advanced
7. Remarks for Usage
Option for 2 heat ports.
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
- 2020 - v1.6.0 - initial implementation - A.Vojacek XRG Simulation GmbH
Backlinks: ClaRa:A User Guide:Revisions:v1.6.0 ClaRa:A User Guide:Revisions:v1.7.0