ForceFree::ComputeDriftTildeJ Struct Reference

Computes the non-stiff part \(\tilde{J}^i_\mathrm{drift}\) of the generalized electric current density \(\tilde{J}^i\). More...

#include <ElectricCurrentDensity.hpp>

Public Types
using	argument_tags
using	return_type = tnsr::I<DataVector, 3>

Static Public Member Functions

static void

apply (gsl::not_null< tnsr::I< DataVector, 3, Frame::Inertial > * > drift_tilde_j, const Scalar< DataVector > &tilde_q, const tnsr::I< DataVector, 3, Frame::Inertial > &tilde_e, const tnsr::I< DataVector, 3, Frame::Inertial > &tilde_b, double parallel_conductivity, const Scalar< DataVector > &lapse, const Scalar< DataVector > &sqrt_det_spatial_metric, const tnsr::ii< DataVector, 3, Frame::Inertial > &spatial_metric)

Detailed Description

Computes the non-stiff part \(\tilde{J}^i_\mathrm{drift}\) of the generalized electric current density \(\tilde{J}^i\).

\begin{align} \tilde{J}^i_\mathrm{drift} = \alpha \sqrt{\gamma} q \frac{\epsilon^{ijk}_{(3)}E_jB_k}{B_lB^l} \end{align}

where \(\alpha\) is lapse, \(\gamma\) is the determinant of the spatial metric, \(q\) is charge density, \(\epsilon^{ijk}_{(3)}\) is the spatial Levi-Civita tensor, \(E^i\) is the electric field, and \(B^i\) is the magnetic field.

Member Typedef Documentation

argument_tags

using ForceFree::ComputeDriftTildeJ::argument_tags

Initial value:

 
      tmpl::list<Tags::TildeQ, Tags::TildeE, Tags::TildeB,
                 Tags::ParallelConductivity, gr::Tags::Lapse<DataVector>,
                 gr::Tags::SqrtDetSpatialMetric<DataVector>,
                 gr::Tags::SpatialMetric<DataVector, 3>>

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The documentation for this struct was generated from the following file:

• src/Evolution/Systems/ForceFree/ElectricCurrentDensity.hpp