Numerical Investigation of Water Droplet Impact on Solid Surface in Microgravity

Abstract:

A numerical study based on VOF model has been carried out to investigate the dynamics of water droplet impact on solid surface in microgravity in comparison with that in normal gravity to discuss the differences of the extinguishing mechanism of water mist in different gravity level. Water droplets with different initial diameters and impact velocities were considered. The simulated results show that the deformation process in microgravity lags behind that in normal gravity. And it was also found that D_max and spread velocities are smaller in microgravity as the potential energy decreases and the time taken for a liquid droplet to reach its maximum spread has no obvious regularity. Hence, the effect of cooling the fuel surface and diluting fuel vapour with water mist in microgravity may be not as good as that in normal gravity.The critical impact Weber number for water droplet breaking up in microgravity is lower than that in normal gravity as the reduction of the value of Bond number, which may result in diluting fuel vapour with water mist in microgravity being more effective than that in normal gravity in some case.

• Periodical: Applied Mechanics and Materials (Volume 390)
• Pages: 65-70
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.390.65
• Online since: August 2013
• Authors: Jun Jun Tao, Jun Qin, Xue Han, Yong Ming Zhang
• Keywords: Drop Impact, Microgravity, Volume of Fluid (VOF), Water Mist

References

[1] Abbud A., et al. Study of an ultra-fine water mist suppression system for spacecraft fires [J]. (2004).

[2] Delplanque, J. P., et al. Proceedings of the Halon Options Technical Working Conference (HOTWC-04), The University of New Mexico, Albuquerque, NM, May (2004).

[3] Abbud-Madrid A., et al. Space Technology and Applications International Forum - 1999, Pts One and Two. M. S. ElGenk. 458: 94-99.

[4] Amon, F., et al. Space Technology and Applications International Forum, Pts 1 and 2. M. S. ElGenk. 2000, 504: 402-407.

[5] Abbud-Madrid A., et al. First International Symposium on Microgravity Research & Applications in Physical Sciences and Biotechnology, Vols I and II, 2001, 454: 313-320.

[6] Abbud-Madrid A., et al. The Mist experiment on STS-107: Fighting fire in microgravity. (2004).

DOI: 10.2514/6.2004-288

[7] Abbud-Madrid A., et al. Albuquerque, NM, 2005. ASME, (2004).

[8] Lewis, S. J. and J. P. Delplanque. ASME, (2004).

[9] Schwer, D. A. and K. Kailasanath. 46th AIAA Aerospace Sciences Meeting and Exhibit 7 - 10 January 2008, Reno, Nevada.

[10] Mawhinney J R, et al. Proc. 4th Int. Symp. On Fire Safety Science p.47–60. (1994).

[11] Andersson P, Holmstedt G. Journal of Fire Protection Engineering, 1998, 9(4): 31-50.

[12] Liu Z, Kim A K. Journal of fire protection engineering, 1999, 10(3): 32-50.

[13] Rein M. Fluid Dynamics Research, 1993, 12(2): 61-93.

[14] A.L. Yarin, Annual review of fluid mechanics, 2006, 38: 159–192.

[15] Aziz S D, Chandra S. International journal of heat and mass transfer, 2000, 43(16): 2841-2857.

[16] Chandra S, Avedisian C T. Proceedings: Mathematical and Physical Sciences, 1991: 13-41.

[17] Manzello S L, Yang J C. International journal of heat and mass transfer, 2004, 47(8): 1701-1709.

[18] Bico J, Tordeux C, Quéré D. EPL (Europhysics Letters), 2001, 55(2): 214.

DOI: 10.1209/epl/i2001-00402-x

[19] Bico J, Thiele U, and Quéré D. Colloids and Surfaces A: Physicoche-mical and Engineering Aspects, 2002, 206(1): 41-46.

DOI: 10.1016/s0927-7757(02)00061-4

[20] Passandideh Fard M. Physics of fluids, 1996, 8(3): 650–660.

[21] Sivakumar D, Katagiri K, Sato T, et al. Physics of fluids, 2005, 17: 100608.

[22] Chen P, Wang X. International Journal of Heat and Mass Transfer, 2011, 54(17): 4143-4147.

[23] Liang R, Chen Z. Microgravity Science and Technology, 2009, 21(1): 247-254.

[24] Easter S, Bet al. Journal of Physics: Conference Series. IOP Publishing, 2011, 327(1): 012027.

[25] Sanjeev A, Jog M A, Manglik R M. Proceedings of the 21st Annual Meeting of the Institute for Liquid Atomization of Spray Systems, Orlando, FL. 2008: 18-21.

[26] Prashant R. Gunjal, et al. Chaudhari. AIChE Journal, 2005, 51(1): 59-78.

[27] M. Pasandideh-Fard, et al. Physics of fluids, 1996, 8 (3): 650–660.