NDLI: Numerical Simulation of Condensation of Bubbles under Microgravity Conditions by Moving Mesh Method in the Double-staggered Grid

Content Provider	Springer Nature Link
Author	Pu, Lin Li, Huixiong Zhao, Jianfu Chen, Tingkuan
Copyright Year	2009
Abstract	A numerical 2D method for simulation of two-phase flows including phase change under microgravity conditions is presented in this paper, with a level set method being coupled with the moving mesh method in the double-staggered grid systems. When the grid lines bend very much in a curvilinear grid, great errors may be generated by using the collocated grid or the staggered grid. So the double-staggered grid was adopted in this paper. The level set method is used to track the liquid–vapor interface. The numerical analysis is fulfilled by solving the Navier–Stokes equations using the SIMPLER method, and the surface tension force is modeled by a continuum surface force approximation. A comparison of the numerical results obtained with different numerical strategies shows that the double-staggered grid moving-mesh method presented in this paper is more accurate than that used previously in the collocated grid system. Based on the method presented in this paper, the condensation of a single bubble in the cold water under different level of gravity is simulated. The results show that the condensation process under the normal gravity condition is different from the condensation process under microgravity conditions. The whole condensation time is much longer under the normal gravity than under the microgravity conditions.
Starting Page	15
Ending Page	22
Page Count	8
File Format	PDF
ISSN	09380108
Journal	Microgravity Science and Technology
Volume Number	21
Issue Number	1
e-ISSN	18750494
Language	English
Publisher	Springer Netherlands
Publisher Date	2009-06-20
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Condensation Moving mesh method Double-staggered grid Microgravity Mechanics, Fluids, Thermodynamics Extraterrestrial Physics, Space Sciences Aerospace Technology and Astronautics
Content Type	Text
Resource Type	Article
Subject	Applied Mathematics Physics and Astronomy Engineering Modeling and Simulation

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