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Diffstat (limited to 'Docs/source/usage/parameters.rst')
| -rw-r--r-- | Docs/source/usage/parameters.rst | 5 |
1 files changed, 1 insertions, 4 deletions
diff --git a/Docs/source/usage/parameters.rst b/Docs/source/usage/parameters.rst index c967064ba..176a2b6ed 100644 --- a/Docs/source/usage/parameters.rst +++ b/Docs/source/usage/parameters.rst @@ -1563,7 +1563,7 @@ Numerics and algorithms https://ieeexplore.ieee.org/document/8659392. * ``warpx.do_multi_J`` (`0` or `1`; default: `0`) - Whether to use the multi-J algorithm, where current deposition and field update are performed multiple times within each time step. The number of sub-steps is determined by the input parameter ``warpx.do_multi_J_n_depositions``. Unlike sub-cycling, field gathering is performed only once per time step, as in regular PIC cycles. For simulations with strong numerical Cherenkov instability (NCI), it is recommended to use the multi-J algorithm in combination with ``psatd.do_time_averaging = 1``. + Whether to use the multi-J algorithm, where current deposition and field update are performed multiple times within each time step. The number of sub-steps is determined by the input parameter ``warpx.do_multi_J_n_depositions``. Unlike sub-cycling, field gathering is performed only once per time step, as in regular PIC cycles. When ``warpx.do_multi_J = 1``, we perform linear interpolation of two distinct currents deposited at the beginning and the end of the time step, instead of using one single current deposited at half time. For simulations with strong numerical Cherenkov instability (NCI), it is recommended to use the multi-J algorithm in combination with ``psatd.do_time_averaging = 1``. * ``warpx.do_multi_J_n_depositions`` (integer) Number of sub-steps to use with the multi-J algorithm, when ``warpx.do_multi_J = 1``. @@ -1697,9 +1697,6 @@ Numerics and algorithms * ``psatd.do_time_averaging`` (`0` or `1`; default: 0) Whether to use an averaged Galilean PSATD algorithm or standard Galilean PSATD. -* ``psatd.J_linear_in_time`` (`0` or `1`; default: `0`) - Whether to perform linear interpolation of two distinct currents deposited at the beginning and the end of the time step (``psatd.J_linear_in_time = 1``), instead of using one single current deposited at half time (``psatd.J_linear_in_time = 0``), for the field update in Fourier space. Currently requires ``psatd.update_with_rho = 1``, ``warpx.do_dive_cleaning = 1``, and ``warpx.do_divb_cleaning = 1``. - * ``warpx.override_sync_intervals`` (`string`) optional (default `1`) Using the `Intervals parser`_ syntax, this string defines the timesteps at which synchronization of sources (`rho` and `J`) and fields (`E` and `B`) on grid nodes at box |