Simple components for 1-dimensional incompressible thermo-fluid flow models
Information
This package contains very simple-to-use components to model coolant flows as needed to simulate cooling e.g. of electric machines:
- Components: components like different types of pipe models
- Examples: some test examples
- Interfaces: definition of connectors and partial models
(containing the core thermodynamic equations)
- Media: definition of media properties
- Sensors: various sensors for pressure, temperature, volume and enthalpy flow
- Sources: various flow sources
Variables used in connectors:
- Pressure p
- flow MassFlowRate m_flow
- SpecificEnthalpy h
- flow EnthalpyFlowRate H_flow
EnthalpyFlowRate means the Enthalpy = cpconstant * m * T that is carried by the medium's flow.
Limitations and assumptions:
- Splitting and mixing of coolant flows (media with the same cp) is possible.
- Reversing the direction of flow is possible.
- The medium is considered to be incompressible.
- No mixtures of media is taken into consideration.
- The medium may not change its phase.
- Medium properties are kept constant.
- Pressure changes are only due to pressure drop and geodetic height differnence rho*g*h (if h > 0).
- A user-defined part (0..1) of the friction losses (V_flow*dp) are fed to the medium.
- Note: Connected flowPorts have the same temperature (mixing temperature)!
Since mixing may occur, the outlet temperature may be different from the connector's temperature.
Outlet temperature is defined by variable T of the corresponding component.
Further development:
- Additional components like tanks (if needed)
- Main Authors:
-
Anton Haumer
Technical Consulting & Electrical Engineering
A-3423 St.Andrae-Woerdern, Austria
email: a.haumer@haumer.at
Dr.Christian Kral
Österreichisches Forschungs- und Prüfzentrum Arsenal Ges.m.b.H.
arsenal research
Giefinggasse 2
A-1210 Vienna, Austria
Copyright © 1998-2009, Modelica Association, Anton Haumer and arsenal research.
The Modelica package is free software; it can be redistributed and/or modified
under the terms of the Modelica license, see the license conditions
and the accompanying disclaimer
here.
Extends from Modelica.Icons.Library2 (Icon for library where additional icon elements shall be added).
Package Content
Name | Description |
Examples
| Examples that demonstrate the usage of the FluidHeatFlow components |
Components
| Basic components (pipes, valves) |
Media
| Medium properties |
Sources
| Ideal fluid sources, e.g., ambient, volume flow |
Sensors
| Ideal sensors to measure port properties |
Interfaces
| Connectors and partial models |
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