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RichardsMechanics: mass lumping #2590

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[PL] RM; Implement mass lumping.

Both, Picard and Newton implementations are done.
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endJunction committed Aug 5, 2019
commit dc69d0ed4b40b43a2e2b144b711caf2c33cbf2c2
@@ -281,6 +281,13 @@ void RichardsMechanicsLocalAssembler<
.noalias() += N_p.transpose() * S_L * rho_LR * alpha *
identity2.transpose() * B * w;
}

if (_process_data.apply_mass_lumping)
{
auto Mpp = M.template block<pressure_size, pressure_size>(
pressure_index, pressure_index);
Mpp = Mpp.colwise().sum().eval().asDiagonal();
}
}

template <typename ShapeFunctionDisplacement, typename ShapeFunctionPressure,
@@ -553,6 +560,11 @@ void RichardsMechanicsLocalAssembler<ShapeFunctionDisplacement,
dNdx_p.transpose() * rho_LR * k_rel * rho_Ki_over_mu * b * w;
}

if (_process_data.apply_mass_lumping)
{
storage_p = storage_p.colwise().sum().eval().asDiagonal();

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@wenqing

wenqing Aug 6, 2019

Member

In future, the name of this term is better to be unified both here and where in assemble().

}

// pressure equation, pressure part.
local_Jac
.template block<pressure_size, pressure_size>(pressure_index,
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