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Physical-Informed Neural Networks

Physics-Informed Neural Networks (PINNs) combine the power of neural networks with the physical laws governing a system, allowing for the incorporation of domain knowledge and enforcing physical constraints during training, making them suitable for solving partial differential equations and related problems.

1D Curve

Fitting $y=e^x$ with:

  • Govern function: $\frac{dy}{dx}=y, x\in[0, 1]$
  • Data: $y(0)=1$

1D curve fitting

2D Burgers' Equation

Fitting 2D Burgers' Equation with:

  • Govern function: $z_x + zz_y - \frac{0.01}{\pi}z_{yy}=0, x\in [0, 1], y\in [-1, 1]$
  • Data:
    • $z(0, y) = -\sin(\pi y)$
    • $z(x, -1) = z(x, 1) = 0$

2D Burgers' Equation

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Utilized PINNs to fit 1D curves and 2D Burgers' Equation

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