Composite Modelling: Combining Physical and Numerical Models

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Journal/Book Title/Conference

34th World Congress of the International Association for Hydro-Environment Engineering and Research (IAHR)

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The paper presents an overview of composite modelling, defined as the joint use of physical and numerical models, within the hydraulic modelling community. It draws on work undertaken within the research project Hydralab ( and subsequently in an IAHR working group on Composite Modelling. The strengths and weaknesses of physical and numerical models are analysed, along with selected case studies that focused on the methodologies used and their impact on the modelling approach. Some reflections on key elements in composite modelling will be presented. Composite modelling is still in its infancy in the hydraulic community, but there is a growing trend towards using both numerical and physical models together. The subject will be developed by the sharing of experience and the development of standards.

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