SR13  Mecânica dos Fluidos
 
 Title:
NUMERICAL FLOW SIMULATION THROUGH SUDDEN GEOMETRY EXPANSIONS
 
Summary :
ABSTRACT. THE PRESENT WORK DEVELOPS A METHOD FOR THE SOLUTION OF FLUID FLOW THROUGH SUDDEN GEOMETRY EXPANSIONS. THE ANALYSIS OF THESE PHENOMENA IS A VERY COMPLEX WORK, THAT IS WHY WE ARE BEGINNING BY AN EASIER MODEL AS AN INCOMPRESSIBLE, SINGLE PHASE, TWO-DIMENSIONAL FLOW THROUGH SUDDEN EXPANSIONS WHOSE RELATIONS VARIES FROM 1:3 TO 1:20. FOR THIS IT IS USED A FINITE DIFFERENCES METHOD BASED ON AN EXPLICIT NEWTON S SCHEME. A CARTESIAN GRID IS USED, AND IT IS REFINED NEAR THE EXPANSION (X-DIRECTION) AND CHANNEL WALLS (Y-DIRECTION). TESTS ARE CARRIED OUT FOR STEADY FLOWS FOR REYNOLDS NUMBERS BETWEEN 53 AND 187 AND THE RESULTS ARE FOUND TO COMPARE WELL WITH NUMERICAL DATA FOUND IN THE LITERATURE. KEY WORDS: NUMERICAL SIMULATION, SUDDEN GEOMETRY EXPANSIONS, NEWTON S METHOD  
 
Author :
DE BORTOLI, ÁLVARO LUIS
GOMES, SEBASTIÃO CÍCERO P.
TAVARES, ALEXANDRE SOARES
 
 
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