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Reply To: ContactAngle2d.cpp

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› Forums › on OpenLB › General Topics › ContactAngle2d.cpp › Reply To: ContactAngle2d.cpp

September 13, 2020 at 1:51 pm #5122
savis
Participant

Hi Bhuttu,

The issue is that the densities of the two SuperLattices are not the densities of the fluid components. The density of sLattice1 is the total fluid density (= rho_1 + rho_2), while the “density” of sLattice2 is an order parameter to define whether it is fluid 1 or fluid 2 (= rho_1 – rho_2).

Therefore to plot the total density you only need to plot “density1”. It should be slightly higher inside the droplet due to the Laplace pressure. The reason you currently see a smaller value in the droplet is because “density1+density2” is two times the density of fluid 2, which is zero inside the droplet.

I hope this helps.
Sam