Skip to Main Content
 

Global Search Box

 
 
 
 

Files

File List


9153.pdf (5.19 MB)

ETD Abstract Container

Abstract Header

Characterization of Near Field Spray for Impinging Doublets in Air Under High Pressure

Ramasubramanian, Chandrasekar
http://rave.ohiolink.edu/etdc/view?acc_num=ucin1397233377

Abstract Details

2014, MS, University of Cincinnati, Engineering and Applied Science: Mechanical Engineering.
Atomization mechanism of gelled propellants in an impinging jet flow field is significantly different from that of non-gelled liquid propellants and is not clearly understood. In this study, rheologically matched non-Newtonian fluids which are non-reactive and non-toxic have been used as a simulant for the gelled hypergolic propellants. This study explores the effect of liquid fluid properties such as viscosity and surface tension on the liquid sheet breakup with a special emphasis on the effect of ambient pressure. Near field spray characteristics such as the sheet formation and breakup length of the liquid sheet are investigated using shadowgraph. The liquid breakup regimes have been quantitatively characterized for both non-gelled and gelled simulants over a range of flow conditions. For all fluid, the breakup length is found to decrease as the ambient pressure increases. Near-field imaging and its analysis show that the ambient pressure affects jet surface dynamics before impingement by increasing the jet surface disturbance length scale and sheet dynamics after impingement by shortening the surface wavelength, resulting in shorter breakup length with the increase of ambient pressure.
Milind Jog, Ph.D. (Committee Chair)
San-Mou Jeng, Ph.D. (Committee Member)
Jongguen Lee, Ph.D. (Committee Member)
67 p.
Engineering
impingment; sprays; gelled hypergolics; high pressure; regime map; doublet nozzle

Recommended Citations

Citations

  • Ramasubramanian, C. (2014). Characterization of Near Field Spray for Impinging Doublets in Air Under High Pressure [Master's thesis, University of Cincinnati]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1397233377

    APA Style (7th edition)

  • Ramasubramanian, Chandrasekar. Characterization of Near Field Spray for Impinging Doublets in Air Under High Pressure. 2014. University of Cincinnati, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=ucin1397233377.

    MLA Style (8th edition)

  • Ramasubramanian, Chandrasekar. "Characterization of Near Field Spray for Impinging Doublets in Air Under High Pressure." Master's thesis, University of Cincinnati, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1397233377

    Chicago Manual of Style (17th edition)

ucin1397233377
488
© 2014, all rights reserved.
This open access ETD is published by University of Cincinnati and OhioLINK.