modelPolytropicCycle
Extends from ThermofluidStream.Idealized.Examples.TUMExercisesThermodynamicCycles.Exercise4DieselEngine.BaseModel (Defines the parameters).
Information
Example of an Diesel engine cycle. See TUMExercisesThermodynamicCycles.Exercise4DieselEngine for the problem description.
This example makes use of the following components and settings:
-
SimpleAir medium model
(ideal gas with
R = 287 J/(kg·K)andgamma = 1.40) - PolytropicPerfectGas process model
-
systemSpec = Cycle(SystemModel)
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| Medium.AbsolutePressure | p1 (from BaseModel) | 100000 | Pressure before compression |
| Medium.Temperature | T1 (from BaseModel) | 300 | Temperature before compression |
| Real | compressionRatio (from BaseModel) | 23 | Compression ratio |
| SI.Temperature | T3 (from BaseModel) | 1700 | Temperature after combustion |
| SI.MassFlowRate | m_flow (from BaseModel) | 1 | Mass flow rate |
| Medium.Density | rho1 (from BaseModel) | Medium.density_pT(p1, T1) | Density before compression |
Components
| Type | Name | Default | Description |
|---|---|---|---|
| ThermofluidStream.DropOfCommons | dropOfCommons (from BaseModel) | ||
| ThermofluidStream.Idealized.Processes.PolytropicPerfectGas | compression | ||
| ThermofluidStream.Idealized.Processes.Isobaric | combustion | ||
| ThermofluidStream.Idealized.Processes.PolytropicPerfectGas | expansion | ||
| ThermofluidStream.Idealized.Processes.Isochoric | gasExchange | ||
| ThermofluidStream.Idealized.Boundaries.LoopBreaker_m | loopBreaker | ||
| ThermofluidStream.Idealized.EnergyFlow.Components.Sum | shaftPower | ||
| ThermofluidStream.Utilities.showRealValue | maximumPressure | ||
| ThermofluidStream.Utilities.showRealValue | netWork | ||
| ThermofluidStream.Utilities.showRealValue | efficiency | ||
| ThermofluidStream.Utilities.showRealValue | exhaustTemperature |
Revisions
-
2026, by Raphael Gebhart (raphael.gebhart@dlr.de):
Initial version.