Problem for boundary_normal

[asd95521]

Dear Prof.Lu and Community members,

I need do solve a mechanical problem with equilibrium equation. And I used OperatorBC to define the Neumann Condition beacuse of the complication. And if I use "normal=geom.boundary_normal(x)", i will get some errors. But when i rund the tutorial document " Helmholtz equation over a 2D square domain with a hole", everythings is good. Could you give me some idea?

My computer has :Tensorflow 2.11
Numpy 1.24

And this is error

File "/test.py", line 183, in resultat
normal=geom.boundary_normal(x)

File "/.local/lib/python3.9/site-packages/deepxde/geometry/geometry_2d.py", line 41, in boundary_normal
l = np.linalg.norm(_n, axis=-1, keepdims=True)

File "<array_function internals>", line 200, in norm

File "/.local/lib/python3.9/site-packages/numpy/linalg/linalg.py", line 2493, in norm
x = asarray(x)

File "/.local/lib/python3.9/site-packages/tensorflow/python/framework/ops.py", line 922, in array
raise NotImplementedError(

NotImplementedError: Cannot convert a symbolic tf.Tensor (sub_13:0) to a numpy array. This error may indicate that you're trying to pass a Tensor to a NumPy call, which is not supported.

Thanks for your answers

[lululxvi]

Cannot convert a symbolic tf.Tensor (sub_13:0) to a numpy array.

The error is very clear. You need to use numpy array, not tf tensor.