LAGRANGIAN-EULERIAN METHOD EMPIRICAL MODELS NUMERICAL APPROACH ARTIFICIAL INTELLIGENCE MICRO GRANULES THREE-PHASE FLOW SLURRY BUBBLE COLUMN COVID-19 AIR BRAKE BUBBLE COLUMNS CONSERVATION LAWS SADDLE POINT REACTOR EULER-LAGRANGE HYPERBOLIC CONSERVATION LAWS CONVEX INTEGRATION VARIATIONAL METHOD BALANCE LAWS ELEMENTOS FINITOS - GALERKIN MEASURE-VALUED SOLUTIONS VACCINE HEAVY OIL FRACTIONS RADIAL DISPERSION OPERATOR SPLITTING BRAKE VALVES SPOUTED BED MATHEMATICAL MODELING HYDROCONVERSION FLOW IN POROUS MEDIA RAILWAY GENERALIZED MULTISCALE FINITE ELEMENT METHOD VARIATIONAL PRINCIPLE WEAK SOLUTIONS FINITE VOLUME METHOD COATING SEMI BATCH REACTOR PRECIPITATION CHAMBER SAS TECHNIQUE KINETICS ACIDIC HYDROLYSIS FLUIDIZED BEDS RITZ METHOD MODELING TRAIN DYNAMICS MICROFLUIDICS YOUNG MEASURES MODELLING SIMULATION