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Figure 16. The growth of the temperature half-width with increasing distance from the die.

Figure 16 The growth of the temperature half-width with increasing distance from the die.

Related Figures (18)

Figure 2. A side view of the air exit region of the die. A width setting of h = 3.32 mm (the base setting) is shown. The velocity and temperature fields were measured below two parallel, rectangular air nozzles. The nozzles were closely spaced, and each nozzle had an //w (length to width ratio) ranging from 55 to 170. The jets intersected at a 60° angle. Operating temperatures ranged from ambient to 321 °C. Measurements demonstrated that the temperature fields were analogous to the velocity fields. Hence, similar correlations were developed to describe either type of field.
Figure 2. A side view of the air exit region of the die. A width setting of h = 3.32 mm (the base setting) is shown. The velocity and temperature fields were measured below two parallel, rectangular air nozzles. The nozzles were closely spaced, and each nozzle had an //w (length to width ratio) ranging from 55 to 170. The jets intersected at a 60° angle. Operating temperatures ranged from ambient to 321 °C. Measurements demonstrated that the temperature fields were analogous to the velocity fields. Hence, similar correlations were developed to describe either type of field.
Figure 1. The experimental setup.
Figure 1. The experimental setup.
Figure 4. Development of the velocity profile for positions near the die face. All values were measured at y = 0. Figure 3. A view of the face of the die. The z axis (not shown) is perpendicular to the plane of this drawing. Positive z values are located above the plane of the drawing.
Figure 4. Development of the velocity profile for positions near the die face. All values were measured at y = 0. Figure 3. A view of the face of the die. The z axis (not shown) is perpendicular to the plane of this drawing. Positive z values are located above the plane of the drawing.
Figure 6. Nondimensional velocity profiles at z = 5 mm and for a range of values of vjo, 60, and h. Figure 5. Development of the temperature profile for positions near the die face. All values were measured at y = 0.
Figure 6. Nondimensional velocity profiles at z = 5 mm and for a range of values of vjo, 60, and h. Figure 5. Development of the temperature profile for positions near the die face. All values were measured at y = 0.
Figure 7. Nondimensional temperature profiles corresponding to the velocity profiles of Figure 6.
Figure 7. Nondimensional temperature profiles corresponding to the velocity profiles of Figure 6.
Figure 8. Nondimensional velocity profiles at intermediate positions below the die.
Figure 8. Nondimensional velocity profiles at intermediate positions below the die.
Figure 10. Velocity profiles for positions far from the die. Data for three different die settings (h values) are given. The vj. values corresponding to air flow rates of 100 and 200 L/min. Figure 9. Nondimensional temperature profiles at intermediate positions below the die.
Figure 10. Velocity profiles for positions far from the die. Data for three different die settings (h values) are given. The vj. values corresponding to air flow rates of 100 and 200 L/min. Figure 9. Nondimensional temperature profiles at intermediate positions below the die.
Figure 14. Centerline temperature decay.
Figure 14. Centerline temperature decay.
Figure 15. The growth of the velocity half-width with increasing distance from the die.
Figure 15. The growth of the velocity half-width with increasing distance from the die.
Figure 17. The entrainment of air below the die. Mohammed and Shambaugh (1993) give details of this integration procedure. The entrainment coefficient wy is given by
Figure 17. The entrainment of air below the die. Mohammed and Shambaugh (1993) give details of this integration procedure. The entrainment coefficient wy is given by
Figure 18. The variation of jet heat content at positions below the die.
Figure 18. The variation of jet heat content at positions below the die.
Figure 19. Jet heat content for a limited region (—1.5 < x < +1.5 mm).
Figure 19. Jet heat content for a limited region (—1.5 < x < +1.5 mm).
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