Engine Dynamics Library - Release Information

Version 1.2.4 is a maintainance release of the Engine Dynamics Library for Dymola 2016 FD01.

Conversion of user libraries

No conversion is required.

Requirements

Engine Dynamics Library 1.2.4 is based on the Modelon Base Library 2.3 and Modelica Standard Library 3.2.1. It has been tested on

  • Dymola 2016 FD01
  • Dymola 2016

Version 1.2.3 is a minor update of the Engine Dynamics Library.

Improvements

  • Improved Modelica compliance.

Conversion of user libraries

No conversion is required.

Base Library

Engine Dynamics Library 1.2.3 is based on the Modelon Base Library 2.2 and Modelica Standard Library 3.2.1.

Version 1.2.2 is a minor update of the Engine Dynamics Library.

Improvements

  • The simplified heat exchanger components based on efficiency (table based and eps-NTU models) have been improved in that the maximum transferable heat is now correctly computed from the enthalpy difference and flow rates of both sides. Previously this assumed uniform specific heat capacity which in rare cases could result in non-physical solutions.
  • All user calibration factors for heat transfer and pressure drop has been converted from parameters to inputs. Users may still assign them with fixed values in the parameter dialog, but can now also use variable expressions to define calibration factors.
  • Improved flexibility of discretized pipe models. The component can now be configured to expose a flow or control volume behavior at the component boundaries.
  • Improved Modelica compliance.
  • Updated for compatibility with Modelon Base Library 2.1

Conversion of user libraries

Automatic conversion from EDL 1.2.1 is supported using the included conversion script.

Base Library

Engine Dynamics Library 1.2.2 is based on the Modelon Base Library 2.1 and Modelica Standard Library 3.2.1.

09-05-2014

Available for: Dymola 2015

Dependencies: Modelica Standard Library Version: 3.2.1 and Modelon Base Library 2.0

Conversion: 

 

Version 1.2.1 is a minor update of the Engine Dynamics Library. Updates:

  • Removed comparison of enumeration types with Integers. This is not legal Modelica.
  • Updated for compatibility with Modelon base library 2.0

 

Available for: Dymola 2014 FD01

Dependencies: Modelica Standard Library Version: 3.2.1 and Modelon Base Library 1.9

Conversion script from 1.1 provided.

  • Discretized pipe models for air and exhaust are now available in the Engines.Pipes package.
  • Lumped heat exchanger models based on the eps-NTU approach have been added. These are generic models with replaceable effectiveness functions for different flow configurations and replaceable correlations for pressure drop and heat transfer coefficients. The model also accounts for thermal resistance of the wall and can capture first order dynamics of the heat transfer.
  • In addition to the exhaust - liquid heat exchanger configuration, the available heat exchanger models have been extended to air - liquid and air - air variants to allow modeling of different charge air coolers variants.
  • Generic pipe, volume and heat exchanger components inherit the parameter declaration from base classes in the Modelon Base Library to facilitate design of heat exchanger and stack templates and ensure component compatibility and replaceability between different Modelon libraries.
  • Improvements in the medium packages reduce the number of warnings during model translation.
  • Static head can be accounted for by the different pipe models.
  • Table based components now use the Modelon.DataAccess functions that handles more possible data input formats and extrapolation options.
  • Engine Dynamics Library 1.2 has been updated for MSL 3.2.1.