Papers by Thomas Koch

Title:	Numerically Robust Six-Equation Two-Phase Flow Model for Stationary and Moving Systems in Modelica
Authors:	Johannes Brunnemann, Ales Vojacek and Thomas Koch
Abstract:	We present a physics based Modelica finite volume flow model that separately balances vapour and liquid phase. By using extensive state variables and a special mass flow regularisation, the model can cope with the possible vanishing or emerging of a phase in a numerically robust way. Although at prototype stage, the model already exhibits all required capabilities. These are demonstrated in feature testers and in a model of a natural convection driven cooling cycle operating under external acceleration forces.
Keywords:	two phase flow, six equation model, cooling cycle, natural convection, moving systems, ClaRa library
Paper:	full paper
Bibtex:	@InProceedings{modelica.org:Brunnemann:2021, title = "{Numerically Robust Six-Equation Two-Phase Flow Model for Stationary and Moving Systems in Modelica}", author = {Johannes Brunnemann and Ales Vojacek and Thomas Koch}, pages = {539--548}, doi = {10.3384/ecp21181539}, booktitle = {Proceedings of the 14th International Modelica Conference}, location = {Link\"oping, Sweden}, editor = {Martin Sj\"olund and Lena Buffoni and Adrian Pop and Lennart Ochel}, isbn = {978-91-7929-027-6}, issn = {1650-3740}, month = sep, series = {Link\"oping Electronic Conference Proceedings}, number = {181}, publisher = {Modelica Association and Link\"oping University Electronic Press}, year = {2021} }