Article | Proceedings of the 8th International Modelica Conference; March 20th-22nd; Technical Univeristy; Dresden; Germany | Implementation of a transmission line model for fast simulation of fluid flow dynamics Linköping University Electronic Press Conference Proceedings
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Title:
Implementation of a transmission line model for fast simulation of fluid flow dynamics
Author:
Stéphane Velut: Modelon AB, Sweden Hubertus Tummescheit: Modelon AB, Sweden
DOI:
10.3384/ecp11063446
Download:
Full text (pdf)
Year:
2011
Conference:
Proceedings of the 8th International Modelica Conference; March 20th-22nd; Technical Univeristy; Dresden; Germany
Issue:
063
Article no.:
049
Pages:
446-453
No. of pages:
8
Publication type:
Abstract and Fulltext
Published:
2011-06-30
ISBN:
978-91-7393-096-3
Series:
Linköping Electronic Conference Proceedings
ISSN (print):
1650-3686
ISSN (online):
1650-3740
Publisher:
Linköping University Electronic Press; Linköpings universitet


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An implementation of a lumped and 1-dimensional pipeline model for simulation of fast pressure and flow transients such as water-hammer effects is presented. It is an extension of the classical Transmission Line Model (TLM); a transfer matrix representation of a pipeline; relating pressure and volume flow rates at the extremities of a pipeline. The proposed model has extended previous work in different aspects. The extensions were developed for the detailed operational investigation of a pipeline for the transport of carbon dioxide from a carbon capture plant to a suitable location for the geological storage of supercritical; dense phase carbon dioxide. A lumped temperature model; derived as the TLM model by integrating the distributed dynamics; has been added to describe the effect of heat losses in long pipelines. A dynamic friction model that is explicit in the medium and pipeline characterisitcs has also been included. Finally; it is shown that; with simple adjustments; the model can reasonably well describe the pressure dynamics in turbulent flow conditions. Some simulations have been carried out to compare the performance of the proposed model to the one from theModelica Standard Library; and the results were also compared to measurement results from the literature. The resulting model has become useful for a wide variety of engineering applications: pipelines for gas and oil; district heating networks; water distribution networks; wastewater systems; hydro power plants and more. In the lumped; constant temperature version; there are no discretization artifacts; and even in the discretized version taking into account spatial and temporal changes in temperature; discretization artifacts are much smaller than for the standard finite volume model. Moreover; the short simulation times make the model suitable for real-time applications.

Keywords: Water-hammer; transmision line model; dynamic friction; lumped model; CO2 transport

Proceedings of the 8th International Modelica Conference; March 20th-22nd; Technical Univeristy; Dresden; Germany

Author:
Stéphane Velut, Hubertus Tummescheit
Title:
Implementation of a transmission line model for fast simulation of fluid flow dynamics
DOI:
http://dx.doi.org/10.3384/ecp11063446
References:

[1] H. Kuo-Lun A. E. Vardy; J. M. B. Brown; A weighting function model of transient turbulent pipe friction; Journal of Hydraulic research 31 (1993); no. 4.

[2] J. M. B. Brown A. E. Vardy; Transient turbulent friction in smooth pipe flows; Journal of Sound and Vibration 259 (2003); no. 5; 1011 – 1036.

[3] T. L. Bergman-A. S. Lavine F. P. Incropera; D. P. Dewitt; Introduction to heat transfer; John Wiley & Sons; 2007.

[4] D. N. Johnston; Efficient methods for numerical modeling of laminar friction in fluid lines; Journal of Dynamical Systems; Measurement and Control 128 (2006).

[5] S. Gunnarsson P. Krus; Distributed simulation of hydromechanical systems; Third Bath International Fluid Power Workshop.

[6] M. T. P.Mc Cann-H. Tummescheit S. Velut S. Liljemark; K. Arvidsson; Dynamic simulation of a carbon dioxide transfer pipeline for analysis of normal operation and failure modes; 10th International Conference on Greenhouse Gas Technologies; 2010.

[7] A. E. Vardy and J. M. B. Brown; Transient turbulent friction in fully rough pipe flows; Journal of Sound and Vibration 270 (2004); no. 1-2; 233–257.

[8] W. Zielke; Frequency dependent friction in transient pipe flow; Ph.D. thesis; University of Michigan; 1966.

Proceedings of the 8th International Modelica Conference; March 20th-22nd; Technical Univeristy; Dresden; Germany

Author:
Stéphane Velut, Hubertus Tummescheit
Title:
Implementation of a transmission line model for fast simulation of fluid flow dynamics
DOI:
https://doi.org10.3384/ecp11063446
Note: the following are taken directly from CrossRef
Citations:
  • Bram van der Heijde, Arnout Aertgeert & Lieve Helsen (2017). Modelling steady-state thermal behaviour of double thermal network pipes. International Journal of Thermal Sciences, 117: 316. DOI: 10.1016/j.ijthermalsci.2017.03.026
  • B. van der Heijde, M. Fuchs, C. Ribas Tugores, G. Schweiger, K. Sartor, D. Basciotti, D. Müller, C. Nytsch-Geusen, M. Wette & L. Helsen (2017). Dynamic equation-based thermo-hydraulic pipe model for district heating and cooling systems. Energy Conversion and Management, 151: 158. DOI: 10.1016/j.enconman.2017.08.072


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