Hi, I am getting a runtime error,but i dont know what is causing the error.Even the error message does not say something much useful mesh=UnitSquraeMesh(16,16) V = VectorElement("Lagrange", mesh.ufl_cell(), 2) Q = FiniteElement("Lagrange", mesh.ufl_cell(), 1) TH = V*Q VQ = FunctionSpace(mesh, TH) …

Then you should try something like: bc = DirichletBC(VQ.sub(0), Constant((10,10)), boundary) if you want the vector space to be 10 for each component.

Are you trying to apply a constant 10 boundary condition on every dof in both the vector space V and in Q? If so: vq = Function(VQ) vq.vector()[:] = 10 bc = DirichletBC(VQ, vq, boundary) If not, you need to explain what kind of boundary condition you would like to prescribe

No i just wanted to have 10 as BC in V and not Q.

Oh, okay Btw here (10,10) are the vector components right.? TYSM for the reply

Yes, as this is a 2D problem with a 2D vector function space, this is each of the components.

Runtime error while executing dirichlet BC

nate July 21, 2020, 5:50pm 2

Could you state the error message? It would likely be useful for you to get help even if it’s useless to you.

Cf. Read before posting: How do I get my question answered?

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Runtime error while executing dirichlet BC

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