PL EN


Preferencje help
Widoczny [Schowaj] Abstrakt
Liczba wyników
2018 | 25 | Special Issue S2 |

Tytuł artykułu

The cavitation nuclei transient characteristics of Lennard-Jones fluid in cavitation inception

Autorzy

Warianty tytułu

Języki publikacji

EN

Abstrakty

EN
In the field of ocean engineering, cavitation is widespread, for the study of cavitation nuclei transient characteristics in cavitation inception, we applied theoretical analysis and molecular dynamics (MD) simulation to study Lennard-Jones (L-J) fluid with different initial cavitation nuclei under the NVT-constant ensemble in this manuscript. The results showed that in cavitation inception, due to the decrease of liquid local pressure, the liquid molecules would enter the cavitation nuclei, which contributed to the growth of cavitation nuclei. By using molecular potential energy, it was found that the molecular potential energy was higher in cavitation nuclei part, while the liquid molecular potential energy changes greatly at the beginning of the cavitation nuclei growth. The density of the liquid and the surface layer changes more obvious, but density of vapor in the bubble changes inconspicuously. With the growth of cavitation nuclei, the RDF peak intensity increased, the peak width narrowed and the first valley moved inner. When cavitation nuclei initial size reduced, the peak intensity reduced, the corresponding rbin increased. With the decrease of the initial cavitation nuclei, the system pressure and total energy achieved a balance longer, and correspondingly, they were smaller. In addition, at the beginning of the cavitation nuclei growth, the total energy and system pressure changed greatly

Słowa kluczowe

Wydawca

-

Rocznik

Tom

25

Opis fizyczny

p.75-84,fig.,ref.

Twórcy

autor
  • National Research Center of Pumps, Jiangsu University, Zhenjiang, Jiangsu 212013, China
autor
  • National Research Center of Pumps, Jiangsu University, Zhenjiang, Jiangsu 212013, China
autor
  • National Research Center of Pumps, Jiangsu University, Zhenjiang, Jiangsu 212013, China
autor
  • National Research Center of Pumps, Jiangsu University, Zhenjiang, Jiangsu 212013, China
autor
  • National Research Center of Pumps, Jiangsu University, Zhenjiang, Jiangsu 212013, China
autor
  • National Research Center of Pumps, Jiangsu University, Zhenjiang, Jiangsu 212013, China

Bibliografia

  • 1.Zhu, R.S., Chen, Z.L., Wang, X.L., Chao, L.: Numerical study on cavitation characteristics of CAP1400 nuclear main coolant pump. Journal of Drainage and Irrigation Machinery Engineering. Vol. 34, no. 6, pp. 490-495, 2016.
  • 2. Knapp, R.T., Daily, J.W., Hammitt, F.G.: Cavitation. Mcgraw-Hill Book Company, New York, 1970.
  • 3. Brennen, C.E.: Cavitation and Bubble Dynamics. Oxford University Press, Oxford, 1995.
  • 4. Tanaka, K.K., Tanaka, H., Angélil, R., Diemand, J.: Simple improvements to classical bubble nucleation models.Phys Rev E Stat Nonlin Soft Matter Phys. Vol. 92, no. 2, pp.022401, 2015.
  • 5. Mørch, K. A.: Cavitation nuclei: experiments and theory. Journal of Hydrodynamics. Vol. 21, no. 2, pp. 176-189, 2009.
  • 6. Mørch, K .A.: Cavitation inception from bubble nuclei. Interface Focus. Vol. 5, no. 5, pp. 20150006, 2015.
  • 7. Andersen, A., Mørch, K. A.: Cavitation nuclei in water exposed to transient pressures. Journal of Fluid Mechanics. no. 771, pp. 424-448, 2015.
  • 8. Kinjo, T., Matsumoto, M.: Cavitation processes and negative pressure. Fluid Phase Equilibria. Vol. 144, no. 1-2, pp. 343-350, 1998.
  • 9. Yasuoka, K., Matsumoto, M.: Molecular dynamics of homogeneous nucleation in the vapor phase. I. Lennard-Jones fluid. Journal of Chemical Physics. Vol. 109, no. 19, pp. 8451-8462, 1998.
  • 10. Wu, Y. W., Chin, P.: A molecular dynamics simulation of bubble nucleation in homogeneous liquid under heating with constant mean negative pressure. Nanoscale and Microscale Thermophysical Engineering. Vol. 7, no. 2, pp. 137-151, 2003.
  • 11. Sekine, M., Yasuoka, K., Kinjo, T., Matsumoto, M.: Liquid–vapor nucleation simulation of Lennard-Jones fluid by molecular dynamics method. Fluid Dynamics Research. Vol. 40, no. 7, pp. 597-605, 2008.
  • 12. Baidakov, V. G., Bobrov, K. S.: Spontaneous cavitation in a Lennard-Jones liquid at negative pressures. Journal of Chemical Physics. Vol. 140, no. 18, pp. 184506, 2014.
  • 13. Baidakov, V. G.: Spontaneous cavitation in a Lennard-Jones liquid: Molecular dynamics simulation and the van der Wa al s- C a hn-Hilliard g ra die nt the or y. Journal of Chemical Physics. Vol. 144, no. 7, pp. 074502, 2016.
  • 14. Angelil, R., Diemand, J., Tanaka, K. K., Tanaka, H.: Bubble evolution and properties in homogeneous nucleation simulations. Physical Review E Statistical Nonlinear & Soft Matter Physics. Vol. 90, no. 6, pp. 063301, 2014.
  • 15. Maruyama, S., Kimura, T.: A Molecular Dynamics Simulation of Bubble Nucleation on Solid Surface. Transactions of the Japan Society of Mechanical Engineers Part B. Vol. 65, no. 638, pp. 3461-3467, 1999.
  • 16. Tatsuto, K., Shigeo, M.: Molecular dynamics simulation of heterogeneous nucleation of a liquid droplet on a solid surface. Nanoscale and Microscale Thermophysical Engineering. Vol. 6, no. 1, pp. 3-13, 2002.
  • 17. Tsuda, S. I., Shu, T., Matsumoto, Y.: A study on the growth of cavitation bubble nuclei using large-scale molecular dynamics simulations. Fluid Dynamics Research. Vol. 40, no. 7-8, pp. 606-615, 2008.
  • 18. Sasikumar, K., Keblinski, P.: Molecular dynamics investigation of nanoscale cavitation dynamics. Journal of Chemical Physics. Vol. 141, no. 23, pp. 12B648_1-790, 2014.
  • 19. Yamamoto, T., Ohnishi, S.: Molecular dynamics study on helium nanobubbles in water. Physical Chemistry Chemical Physics Pccp. Vol. 13, no. 36, pp. 16142, 2011.
  • 20. Mao, Y. J., Z hang , Y. W.: Nonequilibrium molecular dynamics simulation of nanobubble growth and annihilation in liquid water. Nanosc Microsc Therm. Vol. 17, no. 2, pp. 79-91, 2013.
  • 21. Matsumoto, M.: Surface Tension and Stability of a Nanobubble in Water: Molecular Simulation. Journal of Fluid Science & Technology. Vol. 3, no. 8, pp. 922-929, 2008.
  • 22. Allen, M. P., Tildesley, D. J.: Computer simulation of liquid.Oxford: Clarendon Press, 1987.

Typ dokumentu

Bibliografia

Identyfikatory

Identyfikator YADDA

bwmeta1.element.agro-ff9917ce-15e7-416b-89e3-c07ecda9095b
JavaScript jest wyłączony w Twojej przeglądarce internetowej. Włącz go, a następnie odśwież stronę, aby móc w pełni z niej korzystać.