Browse > Article
http://dx.doi.org/10.6108/KSPE.2018.22.1.001

Temperature Distribution of Liquid Nitrogen Jet at Sub- and Supercritical States  

Lee, Hyunchang (Department of Mechanical and Aerospace Engineering, Seoul National University)
Kim, Haisol (Department of Mechanical and Aerospace Engineering, Seoul National University)
Cho, Seongho (Department of Mechanical and Aerospace Engineering, Seoul National University)
Sung, Hong-Gye (School of Aerospace and Mechanical Engineering, Korea Aerospace University)
Yoon, Youngbin (Department of Mechanical and Aerospace Engineering, Seoul National University)
Publication Information
Journal of the Korean Society of Propulsion Engineers / v.22, no.1, 2018 , pp. 1-6 More about this Journal
Abstract
Temperatures of cryogenic nitrogen jet inside an injector and at three different downstream positions (0.9, 10.6, and 28.1d) were measured with thermocouples in sub- and supercritical states. The jet temperature decreased while cooling the supply line and injector. The jet experienced from flash boiling, boiling and then no boiling according to decreasing temperature. As an analogy to flash-boiling at the subcritical state, pseudo-flash boiling has been assumed considering the existence of pseudo-boiling at the supercritical state. By showing an area where the temperature did not increase downstream, the plausibility of pseudo-flash boiling is proposed.
Keywords
Pseudo-boiling; Liquid Nitrogen Jet; Supercritical Fluids; Flash Boiling;
Citations & Related Records
연도 인용수 순위
  • Reference
1 Mayer, W., Telaar, J., Branam, R., Schneider, G. and Hussong, J., "Raman measurements of cryogenic injection at supercritical pressure," Heat and Mass Transfer, Vol. 39, No. 8-9, pp. 709- 719, 2003.   DOI
2 Branam, R. and Mayer, W., "Characterization of cryogenic injection at supercritical pressure," Journal of Propulsion and power, Vol. 19, No. 3, pp. 342-355, 2003.   DOI
3 Chehroudi, B., Cohn, R. and Talley, D., "Cryogenic shear layers: experiments and phenomenological modeling of the initial growth rate under subcritical and supercritical conditions," International Journal of Heat and Fluid Flow, Vol. 23, No. 5, pp. 554-563, 2002.   DOI
4 Oschwald, M., Smith, J., Branam, R., Hussong, J., Schik, A., Chehroudi, B. and Talley, D., "Injection of fluids into supercritical environments," Combustion Science and Technology, Vol. 178, No. 1-3, pp. 49-100, 2006.   DOI
5 Banuti, D., "Crossing the Widom-line- Supercritical pseudo-boiling," The Journal of Supercritical Fluids, Vol. 98, pp. 12-16, 2015.
6 Banuti, D.T. and Hannemann, K., "The absence of a dense potential core in supercritical injection: A thermal break-up mechanism," Physics of Fluids (1994-present), Vol. 28, No. 3, 035103, 2016.   DOI
7 "Thermophysical Properties of Fluid Systems" retrieved 01 Mar. 2017 from http://webbook.nist.gov.