2026-09-23T19:43:04Zhttps://orbi.uliege.be/oai/request

oai:orbi.ulg.ac.be:2268/812092026-09-01T13:29:34Zcom_f00col_f03class_c04

doctoral thesis http://purl.org/coar/resource_type/c_db06 info:eu-repo/semantics/doctoralThesis open access http://purl.org/coar/access_right/c_abf2 info:eu-repo/semantics/openAccess https://orbi.uliege.be/page/user-license Modelling Transient Air-water Flows in Civil and Environmental Engineering Kerger, François Pirotton, Michel 2010-12-17 310 https://orbi.uliege.be/handle/2268/81209 info:hdl:2268/81209 https://orbi.uliege.be/bitstream/2268/81209/1/Th%c3%a8seFran%c3%a7oisKergerVsFinalSans%20champs2.pdf en Civil engineering environmental engineering Multiphase flow Engineering, computing & technology Civil engineering Ingénierie, informatique & technologie Ingénierie civile The present text, submitted to the University of Liège in fulfillment of the requirements for the degree of “Docteur en Sciences de l’Ingénieur”, aims at improving the understanding and description of air‐water interactions in transient flows. A particular emphasis is set on phenomena relevant in civil and environmental engineering, like rivers, pipes, and hydraulic structures. Theoretical results of this doctoral research may be summarized in two main propositions. First, I show that any mathematical model for free surface flows can be extended to pressurized flows. Second, the multiphase drift‐flux model is proven an adequate alternative to Navier‐ Stokes equations in civil and environmental engineering. These propositions underpin the development of original mathematical models and new computational codes (WOLF1D and WOLF IMPack). Validation and application on actual cases prove the efficiency of the new approach. Original concepts introduced in this thesis pave the way for further research on environmental flows, especially on the mathematical description of transport phenomena (pollutants, sediments) and heterogeneous interactions (vegetation, rough bed). ULiège - Université de Liège