modelHollowBlockWithTubesAndCarrierTubes
Extends from ClaRa.Basics.ControlVolumes.Fundamentals.Geometry.BlockShape (Partial model for block-shaped geometry definitions), ClaRa.Basics.ControlVolumes.Fundamentals.Geometry.ShellWithTubes (geometry definition for a shell with tubes inside), ClaRa.Basics.ControlVolumes.Fundamentals.Geometry.GenericGeometry (All shapes || Base class).
Information
For detailed model documentation please consult the html-documentation shipped with ClaRa.
Authorship and Copyright Statement for original (initial) Contribution
Author:
DYNCAP/DYNSTART development team, Copyright © 2011-2024.References:
For references please consult the html-documentation shipped with ClaRa.
Remarks:
This component was developed by ClaRa development team under the 3-clause BSD License.
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.
The ClaRa development team consists of the following partners:
TLK-Thermo GmbH (Braunschweig, Germany)
XRG Simulation GmbH (Hamburg, Germany).
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| Integer | N_heat (from GenericGeometry) | 2 | No. of heat transfer areas |
| ClaRa.Basics.Choices.GeometryOrientation | flowOrientation | ClaRa.Basics.Choices.GeometryOrientation.horizontal | |Essential Geometry Definition|Orientation of shell side flow |
| Real | interior | volume/(height*width*length) | Void fraction in the shell |
| Real | MIN | 1e-5 | Limiter |
| Real | fa | if staggeredAlignment then (1 + (if b > 0 then 2/3/b else 0)) else (1 + (if b > 0 then 0.7/max(MIN, psi)^1.5*(b/a - 0.3)/(b/a + 0.7)^2 else 0)) | Alignment factor |
| Real | N_tubes_parallel | N_tubes*N_passes/N_rows | Number of parallel tubes |
| Real | length_tubes | if tubeOrientation == 0 then length else if tubeOrientation == 1 then width else height | Tube length |
| Real | A_narrowed_ort | if flowOrientation == ClaRa.Basics.Choices.GeometryOrientation.vertical then if tubeOrientation == 0 then length*width - N_tubes_parallel*diameter_t*length else if tubeOrientation == 1 then length*width - N_tubes_parallel*diameter_t*width else 0 else if tubeOrientation == 0 then 0 else if tubeOrientation == 1 then width*height - N_tubes_parallel*diameter_t*width else height*width - N_tubes_parallel*diameter_t*height | Narrowed cross section in parallel tube layer |
| Real | A_narrowed_par | if flowOrientation == ClaRa.Basics.Choices.GeometryOrientation.vertical then if tubeOrientation == 0 then length*height - N_rows*diameter_t*length else if tubeOrientation == 1 then width*height - N_rows*diameter_t*width else 0 else if tubeOrientation == 0 then 0 else if tubeOrientation == 1 then width*length - N_rows*diameter_t*width else height*length - N_rows*diameter_t*height | Narrowed cross section in tube row layer |
| Real | length_bundle_par | N_rows*Delta_z_par | |
| Real | length_bundle_ort | N_tubes_parallel*Delta_z_ort | |
| Real | Delta_l_par | if flowOrientation == ClaRa.Basics.Choices.GeometryOrientation.vertical then if tubeOrientation == 0 then height - length_bundle_par else if tubeOrientation == 1 then height - length_bundle_par else 0 else if tubeOrientation == 0 then 0 else if tubeOrientation == 1 then length - length_bundle_par else length - length_bundle_par | |
| Real | Delta_l_ort | if flowOrientation == ClaRa.Basics.Choices.GeometryOrientation.vertical then if tubeOrientation == 0 then width - length_bundle_ort else if tubeOrientation == 1 then length - length_bundle_ort else 0 else if tubeOrientation == 0 then 0 else if tubeOrientation == 1 then height - length_bundle_ort else width - length_bundle_ort | |
| Essential Geometry Definition | |||
| Units.Volume | volume (from GenericGeometry) | 1 | Volume of the component |
| Units.Area[N_heat] | A_heat (from GenericGeometry) | ones(N_heat) | Heat transfer area: /1/ dedicated to lateral surface |
| Units.Area[N_heat] | A_heat_CF (from GenericGeometry) | {A_heat[i]*CF_geo[i] for i in 1:N_heat} | Corrected heat transfer area: /1/ dedicated to lateral surface |
| Real[N_heat] | CF_geo (from GenericGeometry) | ones(N_heat) | Correction factor for heat transfer area: /1/ dedicated to lateral surface |
| Units.Area | A_cross (from GenericGeometry) | 1 | Cross section for mass flow |
| Units.Area | A_front (from GenericGeometry) | 1 | Frontal area |
| Units.Area | A_hor (from GenericGeometry) | 1 | Nominal horizonal area |
| Integer | N_inlet (from GenericGeometry) | 1 | Number of inlet ports |
| Integer | N_outlet (from GenericGeometry) | 1 | Number of outlet ports |
| Units.Length[N_inlet] | z_in (from GenericGeometry) | ones(N_inlet) | Height of inlet ports |
| Units.Length[N_outlet] | z_out (from GenericGeometry) | ones(N_outlet) | Height of outlet ports |
| Units.Length | height_fill (from GenericGeometry) | 1 | Fillable height of component |
| Real[:,2] | shape (from GenericGeometry) | [0, 1; 1, 1] | Shape factor, i.e. A_horitontal=A_hor*interp(shape, relLevel) |
| General › Essential Geometry Definition | |||
| Units.Length | height | 1 | Height of the component; Fixed flow direction in case of vertical flow orientation |
| Units.Length | width | 1 | Width of the component |
| Units.Length | length | 1 | Length of the component; Fixed flow direction in case of horizontal flow orientation |
| General › Interior Equipment | |||
| Units.Length | diameter_t | 0.1 | Outer diameter of internal tubes |
| Interior Equipment | |||
| Integer | N_tubes | 1 | Number of internal tubes for one pass |
| Integer | N_passes | 1 | Number of passes of the internal tubes |
| Units.Length | Delta_z_par | 2*diameter_t | Distance between tubes parallel to flow direction |
| Units.Length | Delta_z_ort | 2*diameter_t | Distance between tubes orthogonal to flow direction |
| Real | a | Delta_z_ort/diameter_t | Lateral alignment ratio |
| Real | b | Delta_z_par/diameter_t | Vertical alignment ratio |
| Real | psi | if b >= 1 or b <= 0 then 1 - Modelica.Constants.pi/4/a else 1 - Modelica.Constants.pi/4/a/b | Void ratio |
| Boolean | staggeredAlignment | true | True, if the tubes are aligned staggeredly, false otherwise |
| Integer | N_rows | integer(ceil(sqrt(N_tubes))*N_passes) | Number of pipe rows in flow direction (minimum = N_passes) |
| Integer | tubeOrientation | 0 | Tube orientation |
| Carrier Tubes | |||
| Integer | N_ct | 16 | Number of carrier tubes |
| Units.Length | d_ct | 0.04 | Diameter of carrier tubes |
Revisions
For revisions please consult the html-documentation shipped with ClaRa.