High Power Laser and Particle Beams, Volume. 37, Issue 2, 021003(2025)
Study on recovery pressure of diffuser for DF chemical laser
Figures & Tables(11)
Fig. 2. Comparison of numerical and experimental results with traditional diffuser
Fig. 5. Mach number contour of diffuser with secondary-throat along the height direction
Fig. 6. Mach number contour of diffuser with secondary-throat along the width direction
Fig. 7. Comparison of test results with different divergence angle
Fig. 8. Comparison of test results with and without secondary-throat
Table 1. Static pressure distribution along the length of diffuser with 8° expansion
View tableView in ArticleTable 1. Static pressure distribution along the length of diffuser with 8° expansion
x/mm static pressure under 23.34 kPa back pressure/kPa static pressure under 24.53 kPa back pressure/kPa 25 7.08 10.71 250 8.59 16.25 500 18.88 19.05 750 19.15 20.03 1200 19.15 21.64 1800 23.24 23.8
Table 2. Static pressure distribution along the length of diffuser with 5° expansion
View tableView in ArticleTable 2. Static pressure distribution along the length of diffuser with 5° expansion
x/mm static pressure under 23.34 kPa back pressure/kPa static pressure under 26.67 kPa back pressure/kPa 25 7.07 7.07 250 7.93 12.03 500 8.53 18.13 750 10.2 20.76 1200 16.36 21.77 1800 19.56 24.29 2200 21.99 25.87 2500 22.85 26.64
Table 3. Back pressure tests
View tableView in ArticleTable 3. Back pressure tests
back pressure/kPa pressure of laser cavity/kPa x=24 mm x=98 mm x=138 mm 1.36 4.17 5.75 7.01 13.19 4.04 5.33 6.65 17.08 4.03 5.6 7 20.63 4.13 5.71 6.96 21.8 4 5.48 6.72
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Zhou Guo, Hongqiang Zhang, Zhen Yang, Feixue Yan. Study on recovery pressure of diffuser for DF chemical laser[J]. High Power Laser and Particle Beams, 2025, 37(2): 021003
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Received: Aug. 28, 2024
Accepted: Dec. 23, 2024
Published Online: Mar. 25, 2025
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