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EFFECT OF COLLAR AND BEVEL ANGLE IN MIXING ENHANCEMENT OF MACH 1.76 JET EXITING FROM A CONVERGENT-DIVERGENT NOZZLE
Authors:
Bholu Kumar1, Suresh Kant Verma1, Shantanu Srivastava2
1Department of Mechanical Engineering, National Institute of Technology Patna, India
2Department of Mechanical Engineering, Motilal Nehru National Institute of Technology Allahabad, India
Received: 26.12.2020.
Accepted: 16.03.2021.
Available: 31.03.2021.
Abstract:
The present work focuses on the effect of nozzle collar exit inclination on the mixing characteristics of Mach 1.76 jet in both design and off-design conditions using commercial software package ANSYS Fluent. In order to maintain the uniform Mach number at the nozzle exit, a collar is inserted at the nozzle exit and collar exit is varied with bevel angle of 300, 450 and 600 to see the effect of bevel collar on the jet mixing. Thus, four model namely C30 (300 bevel), C45 (450 bevel), C60 (600 bevel) and collar with zero bevel angle (UJ) are constructed for investigation. From the obtained results, it is reported that the bevel collars efficiently reduce the jet core as much as 76%, indicating enhanced jet mixing and found effective in both design and off-design condition of the jet. The C60 jet shows highest jet mixing followed by C45 jet, C30 jet and UJ. Thus, increase in bevel angle led to increase in mixing enhancement of the jet. Due to asymmetry in collar, the upward and downward shift of the jet core are seen with variation in NPR for the controlled jets (C30, C45 and C60).
Keywords:
Supersonic jet, bevel collar, mixing, shock, SST k-ω
References:
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This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License (CC BY-NC 4.0)
Volume 9
Number 3
September 2024
Last Edition
Volume 9
Number 3
September 2024
How to Cite
B. Kumar, S.K. Verma, S. Srivastava, Effect of Collar and Bevel Angle in Mixing Enhancement of Mach 1.76 Jet Exiting from a Convergent-Divergent Nozzle. Applied Engineering Letters, 6(1), 2021: 1–10.
https://doi.org/10.18485/aeletters.2021.6.1.1
More Citation Formats
Kumar, B., Verma, S. K., & Srivastava, S. (2021). Effect of Collar and Bevel Angle in Mixing Enhancement of Mach 1.76 Jet Exiting from a Convergent-Divergent Nozzle. Applied Engineering Letters, 6(1), 1–10. https://doi.org/10.18485/aeletters.2021.6.1.1
Kumar, Bholu, et al. “Effect of Collar and Bevel Angle in Mixing Enhancement of Mach 1.76 Jet Exiting from a Convergent-Divergent Nozzle.” Applied Engineering Letters, vol. 6, no. 1, 2021, pp. 1–10,
https://doi.org/10.18485/aeletters.2021.6.1.1.
Kumar, Bholu, Suresh Kant Verma, and Shantanu Srivastava. 2021. “Effect of Collar and Bevel Angle in Mixing Enhancement of Mach 1.76 Jet Exiting from a Convergent-Divergent Nozzle.” Applied Engineering Letters 6 (1): 1–10. https://doi.org/10.18485/aeletters.2021.6.1.1.
Kumar, B., Verma, S.K. and Srivastava, S. (2021). Effect of Collar and Bevel Angle in Mixing Enhancement of Mach 1.76 Jet Exiting from a Convergent-Divergent Nozzle. Applied Engineering Letters, 6(1), pp.1–10. doi: 10.18485/aeletters.2021.6.1.1.
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EFFECT OF COLLAR AND BEVEL ANGLE IN MIXING ENHANCEMENT OF MACH 1.76 JET EXITING FROM A CONVERGENT-DIVERGENT NOZZLE
Authors:
Bholu Kumar1, Suresh Kant Verma1, Shantanu Srivastava2
1Department of Mechanical Engineering, National Institute of Technology Patna, India
2Department of Mechanical Engineering, Motilal Nehru National Institute of Technology Allahabad, India
Received: 26.12.2020.
Accepted: 16.03.2021.
Available: 31.03.2021.
Abstract:
The present work focuses on the effect of nozzle collar exit inclination on the mixing characteristics of Mach 1.76 jet in both design and off-design conditions using commercial software package ANSYS Fluent. In order to maintain the uniform Mach number at the nozzle exit, a collar is inserted at the nozzle exit and collar exit is varied with bevel angle of 300, 450 and 600 to see the effect of bevel collar on the jet mixing. Thus, four model namely C30 (300 bevel), C45 (450 bevel), C60 (600 bevel) and collar with zero bevel angle (UJ) are constructed for investigation. From the obtained results, it is reported that the bevel collars efficiently reduce the jet core as much as 76%, indicating enhanced jet mixing and found effective in both design and off-design condition of the jet. The C60 jet shows highest jet mixing followed by C45 jet, C30 jet and UJ. Thus, increase in bevel angle led to increase in mixing enhancement of the jet. Due to asymmetry in collar, the upward and downward shift of the jet core are seen with variation in NPR for the controlled jets (C30, C45 and C60).
Keywords:
Supersonic jet, bevel collar, mixing, shock, SST k-ω
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License (CC BY-NC 4.0)
Volume 9
Number 3
September 2024
Last Edition
Volume 9
Number 3
September 2024