pub fn gradient_3d(phi: &FluxGrid3D) -> VectorFluxGrid3DExpand description
Compute the gradient of a scalar field at every cell.
Returns a VectorFluxGrid3D where each component is a partial derivative.
pub fn gradient_3d(phi: &FluxGrid3D) -> VectorFluxGrid3DCompute the gradient of a scalar field at every cell.
Returns a VectorFluxGrid3D where each component is a partial derivative.