Cel The main stated objectives have been reached such that now two different numerical methods exist enabling the solution of the 'dilute solution model' that describes in a general way transport of mass and charge in a computed velocity field. In regions where no concentration variation is observed, the equations reduce to the so called potential model describing only charge transport in the solution. The numerical results are in perfect agreement with theoretical solutions. When comparing numerical results with experiments, it is observed that determination and application of the proper physical constants is of major importance. Comparison of the numerical results with measurements reveals that limiting current densities can be modelled with sufficient accuracy (10-20%). When secondary current densities are considered, the reaction model has to deal with all phenomena occurring at the electrodes in order to meet sufficient accuracy.In this Fundamental Research Project new, complementary and generally applicable numerical methods to predict current density distributions in electrochemical cells will be developed, compared and validated with experiments.Models for dilute solutions describing mass and charge transfer of a maximum of four ions will be solved in practical situations where hydrodynamics may be complex.The project considers steady-state, two-dimensional and axisymmetrical problems. Attention will be given to possible future extensions to three space dimensions, to time dependent problems, to problems involving more species and homogeneous reactions.A multidisciplinary cooperation allows a combined and integrated approach of fluid flow and ion transport. Advantage will be taken from common data structures, grids, discretisation and iteration techniques. In one method multi-dimensional upwinding schemes are used for both the fluid flow and the ion transport. The second method applies upwinding schemes for the fluid flow and an integral formulation for the ion transport.The methods are validated with own measurement performed in a parallel plate cell with baffles, a constricted cell and in a jet cell.The resulting codes will be applicable to actual industrial processes 4 to 5 years after project start. They will yield helpful design tools to many branches of electrochemical industry. Further improvement of the process design and its subsequent performances may be expectable within two years of completion. Dziedzina nauki natural scienceschemical scienceselectrochemistrynatural sciencesmathematicsapplied mathematicsnumerical analysis Program(-y) FP3-BRITE/EURAM 2 - Specific programme (EEC) of research and technological development in the field of industrial and materials technologies, 1990-1994 Temat(-y) 2.2.3 - Integrated approach to chemical and process engineering Zaproszenie do składania wniosków Data not available System finansowania CSC - Cost-sharing contracts Koordynator VUB Wkład UE Brak danych Adres PLEINLAAN 2 1050 BRUSSELS Belgia Zobacz na mapie Koszt całkowity Brak danych Uczestnicy (4) Sortuj alfabetycznie Sortuj według wkładu UE Rozwiń wszystko Zwiń wszystko CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE Francja Wkład UE Brak danych Adres Rue Grandville 1 Ecole N.Sup.Indus.Chimiques 54001 NANCY Zobacz na mapie Koszt całkowity Brak danych INST VON KARMAN OR FLUID DYNAMICS Belgia Wkład UE Brak danych Adres 72 CHAUSSEE DE WATERLOO 1640 RHODE ST GENESE Zobacz na mapie Koszt całkowity Brak danych University of Exeter Zjednoczone Królestwo Wkład UE Brak danych Adres Engineering Building North Park Road EX4 4QF Exeter Zobacz na mapie Koszt całkowity Brak danych Wessex Institute of Technology Zjednoczone Królestwo Wkład UE Brak danych Adres Ashurst Lodge Ashurst SO4 2AA Southampton Zobacz na mapie Koszt całkowity Brak danych
