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# Miguel_s

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Lepton
1. ## Henrys Law

When you use Henry's law it's implicit that you have dynamic equilibrium at the interface gas phase/liquid phase. For a steady-state case I would do the following: If you assume the air to behave as an ideal gas, you can find it's molar concentration in the gas phase by using the equation of state (ideal gas law). With this concentration, you use the Henry's law to find the concentration of air dissolved in your liquid water at the interface gas phase/liquid water phase. You can now apply a mass balance in the liquid water dormain where you just include both diffusive and convective flux terms to find the spatial distribution of dissolved air in your liquid water phase. For a transient case, I would review the behaviour at gas/liquid interface and just add the transient term to the mass balance expression. Hope it helps.
2. ## Solve complicated second order differential equation

It definitely looks better. From that stage on is where I can't just go through... I have tried variable substitution before and nothing... If you have any idea I would really appreciate
3. ## Solve complicated second order differential equation

The following 6 symbols below are constants: ... ... ... F... R... T... And what I need is to solve the equation for , which varies with r. Regarding your questions, I haven't plotted the characteristic field as I never heard about it... Only is a function of r...
4. ## Solve complicated second order differential equation

Hello everyone, I have been having a hard time with this equation... I would really like to know if anybody has an idea on how to solve it... All the suggestions are very much appreciated :)
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