Experimental Study of Effect of Obstacle Presence and its Geometry on Thrust Vector and Outlet Jet in a Convergent-Divergent Micro Nozzle

Q: How can I download an article?

To download an article from SID, first log in to the site, search for the article title, and click on the 'Download Article' option.

Q: How can I download an ISI article?

To download an ISI article on SID, enter the keyword or article title in the search bar, view the relevant results, click on the desired article, and select the 'Download Article' option.

Q: How can I access the SID database?

To access the SID database, visit SID.ir, create an account, and log in to access scientific resources.

Q: Is downloading articles from SID free?

Some articles on SID are available for free, while others require payment. Details are specified on the article's page.

SHARAFI A.; MOKHTARI D.

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

Journal Paper

Paper Information

Journal: Modares Mechanical Engineering Year:2020 | Volume:20 | Issue:5 Page(s): 1211-1221

Download Full-Text

Persian Verion

View:

423

Download:

Cites:

Information Journal Paper

Title

Experimental Study of Effect of Obstacle Presence and its Geometry on Thrust Vector and Outlet Jet in a Convergent-Divergent Micro Nozzle

Author(s)

SHARAFI A. | MOKHTARI D. | Issue Writer Certificate

Keywords

Micro Convergent-Divergent NozzleQ1

Thrust Vectoring ControlQ1

Unconventional ObstacleQ1

Experimental AerodynamicsQ1

Supersonic FlowQ2

Abstract

In this research, the effect of several unconventional obstructions with cubic, spherical, cylindrical, and cone geometries on the propulsion vector of a convergent-divergent micro nozzle as a new method in propulsion vector control is experimentally investigated. For this purpose, a convergent-divergent nozzle was designed and constructed in small dimensions. This nozzle is such that the Mach number is its nominal output in full expansion conditions 2. The wall of this nozzle is designed to measure pressure variations with pressure holes. Also, in the nozzle wall, a duct has been created to apply a bulge inside the nozzle. Pressure sensors and the shadograph system have been used to pressure measurement and check the outlet flow field respectively. The total pressure of the calming chamber is constant in all experiments and is equal to 5. 5 times. The results of this study show that the maximum deviation is related to an obstruction with a cubic geometry which is 2. 1 degrees. Also, the geometries that have sharp corners are more shock-shaped and hit the opposite wall. In this research, the shock formed by a cubic barrier has hit the opposite wall, but with a spherical shaped and cone-shaped barrier, the shock comes out from the nozzle. Also, these results indicate that the axial force of the nozzle has been reduced to a very small extent.

Cites

No record.

References

No record.

Cite

APA: Copy

SHARAFI, A., & MOKHTARI, D.. (2020). Experimental Study of Effect of Obstacle Presence and its Geometry on Thrust Vector and Outlet Jet in a Convergent-Divergent Micro Nozzle. MODARES MECHANICAL ENGINEERING, 20(5 ), 1211-1221. SID. https://sid.ir/paper/178539/en

Vancouver: Copy

SHARAFI A., MOKHTARI D.. Experimental Study of Effect of Obstacle Presence and its Geometry on Thrust Vector and Outlet Jet in a Convergent-Divergent Micro Nozzle. MODARES MECHANICAL ENGINEERING[Internet]. 2020;20(5 ):1211-1221. Available from: https://sid.ir/paper/178539/en

IEEE: Copy

A. SHARAFI, and D. MOKHTARI, “Experimental Study of Effect of Obstacle Presence and its Geometry on Thrust Vector and Outlet Jet in a Convergent-Divergent Micro Nozzle,” MODARES MECHANICAL ENGINEERING, vol. 20, no. 5 , pp. 1211–1221, 2020, [Online]. Available: https://sid.ir/paper/178539/en

Related Journal Papers