Industrial & Engineering Chemistry Research, Vol.37, No.9, 3772-3779, 1998
Modified dual rectangular jets for fiber production
Velocity fields were measured below two parallel, rectangular air nozzles. The following five die (nozzle) types were tested : (1) a die where the jets met at a 60 degrees angle and the die tip was blunt, (2) a die with a 60 degrees angle and a sharp tip, (3) a die with a 70 degrees angle and a sharp tip, (4) a sharp 60 degrees die with an inset, and (5) a sharp 60 degrees die with an outset. Since the dies had a large length-to-width ratio, the velocity fields approximated that of a two-dimensional jet. Correlations were developed to predict the velocity fields below these die types.
Keywords:MODERATE REYNOLDS-NUMBERS, MELT-BLOWING PROCESS, PRACTICAL AIR-JETS, TEMPERATURE-FIELDS, FLOW-FIELD, ANNULAR JETS, VELOCITY;ARRAY