Multi-fidelity drag prediction for base bleed projectile
Aziz, M., Ibrahim, A., Ahmed, M., Riad, A. (2020). Multi-fidelity drag prediction for base bleed projectile. EKB Journal Management System, 19(19th International Conference on Applied Mechanics and Mechanical Engineering.), 1-9. doi: 10.1088/1757-899X/973/1/012033
M M Aziz; A Z Ibrahim; M Y M Ahmed; A M Riad. "Multi-fidelity drag prediction for base bleed projectile". EKB Journal Management System, 19, 19th International Conference on Applied Mechanics and Mechanical Engineering., 2020, 1-9. doi: 10.1088/1757-899X/973/1/012033
Aziz, M., Ibrahim, A., Ahmed, M., Riad, A. (2020). 'Multi-fidelity drag prediction for base bleed projectile', EKB Journal Management System, 19(19th International Conference on Applied Mechanics and Mechanical Engineering.), pp. 1-9. doi: 10.1088/1757-899X/973/1/012033
Aziz, M., Ibrahim, A., Ahmed, M., Riad, A. Multi-fidelity drag prediction for base bleed projectile. EKB Journal Management System, 2020; 19(19th International Conference on Applied Mechanics and Mechanical Engineering.): 1-9. doi: 10.1088/1757-899X/973/1/012033

Multi-fidelity drag prediction for base bleed projectile

The International Conference on Applied Mechanics and Mechanical Engineering
Volume 19, 19th International Conference on Applied Mechanics and Mechanical Engineering., July 2020, Page 1-9  XML PDF (1.13 MB)
Document Type: Original Article
DOI: 10.1088/1757-899X/973/1/012033
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Authors
M M Aziz; A Z Ibrahim email ; M Y M Ahmed; A M Riad
Mechanical Engineering Branch, Military Technical College, Kobri El-Kobba, Cairo, Egypt.
Abstract
A computational study is performed to predict the drag reduction for a base bleed projectile. 2-D and 3-D simulations are conducted to describe the flow past a projectile with base bleed. The calculated computational results are compared with measurements of total drag coefficients based on published results for 155mm K307 projectiles with live/dummy base bleed grain. In addition, the mean drag coefficient measurements based on live firing tests for a five K307 projectiles with live BB grain at different Mach numbers are used to validate results obtained from the computational results. Differences between the drag coefficient calculated from computational and published live firing measurements of the drag coefficient for K307 are less than 5.2% and 6.8% for projectile with dummy and live BB, respectively. On the other hand, the maximum deviation between computational results and real measurements from the live firing tests of live BB projectiles is 2.75%.
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