Robust object-oriented formulation of directed thermofluid stream networks. Issue 3 (3rd May 2020)

• Record Type: Journal Article
• Authors: Zimmer, Dirk
• Is Part Of: Mathematical and computer modelling of dynamical systems. Volume 26:Issue 3(2020)
• Page Start: 204
• Page End: 233
• Publication Date: 2020-05-03
• Subjects: Thermal fluid systems -- object-oriented modelling -- robust computational methods; Engineering -- Mathematical models -- Periodicals; Computer simulation -- Periodicals; 515.39
• DOI: 10.1080/13873954.2020.1757726
• Languages: English
• ISSNs: 1387-3954

Abstract

ABSTRACT: Object-oriented formulation of thermal fluid streams often yields large non-linear equation systems whose numerical solution is difficult to achieve. This paper revisits the fundamental equations for thermal fluid streams and introduces a new term: the steady mass flow pressure p ˆ . Using this term, the equations can be brought into a form where all non-linear computations are explicit. This enables a robust and object-oriented formulation of even complex architectures. The modelling of aircraft environmental control systems is presented as one possible application example.