q769855234

> This is not Neumann BC. Neumann BC is du/dn https://en.wikipedia.org/wiki/Neumann_boundary_condition. Use `OperatorBC`, see https://deepxde.readthedocs.io/en/latest/modules/deepxde.icbc.html#deepxde.icbc.boundary_conditions.OperatorBC and FAQ "Q: More details and examples about boundary conditions." the Beumann boundary condition specifies...

> This is not Neumann BC. Neumann BC is du/dn https://en.wikipedia.org/wiki/Neumann_boundary_condition. Use `OperatorBC`, see https://deepxde.readthedocs.io/en/latest/modules/deepxde.icbc.html#deepxde.icbc.boundary_conditions.OperatorBC and FAQ "Q: More details and examples about boundary conditions." Is there any examples about...

and the correction solution shoube be like this: 

but I just get the solution like this: 


> 很明显，您定义了错误的问题。你的入口速度甚至不匹配。请问您可以粘贴问题陈述而不是模拟图吗？也不要忘记粘贴每次迭代的损失值。 the problem is flow around the square column, initial condition：u,v,p=0 or u=1,v,p=0 at domain boundary condition：u,v,∂p/∂n=0 at sides, coloumn u=umax=1, v=0 at inlet

> > 很明显，你定义了一个问题。你的入口速度甚至不匹配。请问你可以把问题陈述出来而不是模拟错误吗？ > > 问题是围绕方柱流动， 初始条件：u,v,p=0 或 u=1,v,p=0 在域 边界条件：u,v,∂p/∂n=0 在边上，列 u =umax=1, v=0 在入口处 the result of u=1 and u=0 at domain is not same, but shoule be...