BENCHMARKING OF COMPLEX SYSTEMS: APPLICATION TO CEMENT BASED MATERIALS

Author(s): Janez Perko, Diederik Jacques, Ravi A. Patel, Joan Govaerts
Paper category: Proceedings
Book title: proceedings of the International RILEM Conference on Materials, Systems and Structures in Civil Engineering Conference segment on Service Life of Cement-Based Materials and Structures
Editor(s): Miguel Azenha, Ivan Gabrijel, Dirk Schlicke, Terje Kanstad and Ole Mejlhede Jensen
ISBN:978-2-35158-170-4
e-ISBN: 978-2-35158-173-5
Publisher: RILEM Publications SARL
Publication year: 2016
Pages: 276-285
Total Pages: 10
Language : English

Abstract: In modern science and engineering, computer modelling forms an inevitable part in the
assessments of risk or engineering performance. With the increasing amount of experimental
data and process knowledge also the complexity of underlying models increases. However,
the increasing model complexity involves certain consequences. Firstly, increasing model
complexity is prone to errors during numerical implementation. Secondly, each model
definition requires a certain level of abstractions and conceptualizations of processes,
parameters, boundary and/or initial conditions. Finally, the numerical simulations can induce
non-physical behaviour when several processes are coupled together. Several approaches are
possible to assure the quality of the numerical results and built confidence. For simple models
analytical or closed-form solutions can be used for model verification. However, this situation
is rarely true with complex systems. Alternative is to perform benchmarks with different
numerical codes and different authors under the assumptions which allow for an adequate
comparison. This paper summarizes some important elements of benchmarking which are
underpinned by practical examples.

Online publication : 2016
Publication type : full_text
Public price (Euros) : 0.00