Simulate natural convection -- CFD Online Discussion Forums

March 19, 2009, 02:43	Simulate natural convection	#1
FrankW Member Frank Weise Join Date: Mar 2009 Location: Germany Posts: 55 Rep Power: 17	Hi, how can i simulate (transient) natural convection of a liquid (like coffee in a cup). Is there a posibility to avoid vof. And when how define i the boundary conditions of the top (free surface). My first ideas was to use a symmetry condition at top, but it does'nt work (i get no convergence). The reason could be the increase (decrease) of volume. Has anyone ideas. thx Frank

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