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