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Modeling contamination diffusion in a draining container, part 2

The condition you need for the top boundary is a Neumann condition, because the contaminant is entering into the domain at a prescribed rate. The condition is obtained be equating the diffusive flow ...
Rigel's user avatar
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Problems solving 2D heat equation using physics-informed neural networks

Pay attention to the activation function used. The second derivative of RELU would be zero (except at 0). In addition, for numerically solving problems like heat (diffusion) equation using physics ...
M.Jones's user avatar
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2 votes
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Modeling contamination diffusion in a draining container

If you are negleting the fact the the level of the flow gets lower as the bottle drains, then you are implicitly assuming that new water comes into the domain at speed $v$. Since the analyte inflows ...
Rigel's user avatar
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4 votes

Determining the importance of different parameters in a simulation

Optimal sampling will in general depend on one's objective. From the title it seems you are mainly interested in variable importance. This is typically one of the objectives of sensitivity analysis, ...
user9794's user avatar
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