Accessing External Data on Local Media and Remote Servers Using a Highly Optimized File Reader Library

Jörg Rädler; Manuel Ljubijankic; Christoph Nytsch-Geusen; Jörg Huber

Title:

Author:

Jörg Rädler: Berlin University of the Arts / Universität der Künste Berlin (UdK) Berlin, Germany Manuel Ljubijankic: Berlin University of the Arts / Universität der Künste Berlin (UdK) Berlin, Germany Christoph Nytsch-Geusen: Berlin University of the Arts / Universität der Künste Berlin (UdK) Berlin, Germany Jörg Huber: Berlin University of the Arts / Universität der Künste Berlin (UdK) Berlin, Germany

DOI:

10.3384/ecp12076323

Download:

Full text (pdf)

Year:

2012

Conference:

Proceedings of the 9th International MODELICA Conference; September 3-5; 2012; Munich; Germany

Issue:

076

Article no.:

033

Pages:

323-332

No. of pages:

Publication type:

Abstract and Fulltext

Published:

2012-11-19

ISBN:

978-91-7519-826-2

Series:

Linköping Electronic Conference Proceedings

ISSN (print):

1650-3686

ISSN (online):

1650-3740

Publisher:

Linköping University Electronic Press; Linköpings universitet

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ncDataReader2 is an open-source solution for the efficient interpolating access to external data sets. The library of C-functions can be used with different applications and works well with Modelica. Data sets can be easily accessed as continuous functions using different interpolation and extrapolation methods. The application range covers reading generated or measured data; the integration of simulation results from Modelica or other systems and the validation; parametrization and optimization of models using external data. Data sources may be local files or remote servers. Using the netCDF file format; the DAP network protocol and different optimization approaches the data access can be surprisingly fast; even for large remote files with many variables containing millions of values.

Keywords: data; file; interpolation; network; weather; measure

Proceedings of the 9th International MODELICA Conference; September 3-5; 2012; Munich; Germany

Author:

Jörg Rädler, Manuel Ljubijankic, Christoph Nytsch-Geusen, Jörg Huber

Title:

Accessing External Data on Local Media and Remote Servers Using a Highly Optimized File Reader Library

DOI:

http://dx.doi.org/10.3384/ecp12076323

References:

[1] ncDataReader2: http://j-raedler.de/projects/ncDataReader2

[2] netCDF: http://www.unidata.ucar.edu/software/netcdf/

[3] DAP/OpenDAP: http://www.opendap.org/

[4] CSA: http://code.google.com/p/csa-c/

[5] Ernst; T.; Klein-Robbenhaar; C.; Nordwig; A.; Schrag; T.: Modeling and simulation of hybrid systems with SMILE; in: Informatik; Forschung undEntwicklung; 15:33-55; 2000

[6] ANSYS CFD: http://alturl.com/m8fpb

[7] LGPL: http://www.gnu.de/documents/lgpl-2.1.en.html

[8] Dmitrov: http://alturl.com/g8wzk

[9] METEONORM: http://www.meteonorm.com

[10] Pydap: http://pydap.org

[11] BuildingSystems: http://www.modelica-buildingsystems.de

[12] TRY: http://www.dwd.de/TRY

[13] Ljubijankic; M.; Nytsch-Geusen; C.; Rädler; J.; Löffler; M.: Numerical coupling of Modelica and CFD for building energy supply systems; in: Proceedings of the 8th International Modelica Conference; 2011

[14] DyMat: http://j-raedler.de/projects/DyMat

[15] Ljubijankic; M.; Nytsch-Geusen; C.; Jänicke; A.; Schmidt; M.: Advanced analysis of coupled 1D / 3D simulation models by the use of a solar thermal system; in: Proceedings of the Building Simulation; 2011

[16] Nytsch; C.; Quaschning; V.; Scholtz; G.: Photovoltaik Modelle für die Simulationsumgebung SMILE; in: Tagungsband: 15. Symposium Photovoltaische Solarenergie in Staffelstein; OTTI-Technologiekolleg; Regensburg; 2000

Proceedings of the 9th International MODELICA Conference; September 3-5; 2012; Munich; Germany

Author:

Jörg Rädler, Manuel Ljubijankic, Christoph Nytsch-Geusen, Jörg Huber

Title:

Accessing External Data on Local Media and Remote Servers Using a Highly Optimized File Reader Library

DOI:

https://doi.org10.3384/ecp12076323

Note: the following are taken directly from CrossRef

Citations:

Christoph Nytsch-Geusen, Jörg Huber, Manuel Ljubijanki & Jörg Rädler (2013). Modelica BuildingSystems − eine Modellbibliothek zur Simulation komplexer energietechnischer Gebäudesysteme. Bauphysik, 35(1): 21. DOI: 10.1002/bapi.201310045

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Last updated: 2019-11-06