| Type | Intent | Optional | Attributes | Name | ||
|---|---|---|---|---|---|---|
| class(ref_element), | intent(in) | :: | this | Has to be a reference element type. |
||
| integer(kind=ip), | intent(in) | :: | nvar | The number of variables the characteristic flux has to be computed for. |
||
| integer(kind=ip), | intent(in) | :: | order | The order of the reference element. Used to declare the size of the return array. |
||
| real(kind=wp), | intent(in), | dimension(2,nvar) | :: | uint | The boundary data internal to this element. |
|
| real(kind=wp), | intent(in), | dimension(2,nvar) | :: | uext | The boundary data external to this element. |
|
| real(kind=wp), | intent(in), | dimension(2,nvar) | :: | flux | The boundary fluxes. |
|
| real(kind=wp), | intent(in), | dimension(2,nvar) | :: | lambda | The boundary characteristic speeds. |
|
| real(kind=wp), | intent(in), | dimension(2,nvar,nvar) | :: | s | The matrix that converts from characteristic to evolved variables. |
|
| real(kind=wp), | intent(in), | dimension(2,nvar,nvar) | :: | sinv | The matrix that converts from evolved to characteristic variables. |
|
| logical, | intent(in) | :: | debug_output | Currently ignored for the real version of this routine. |
At return the numerical flux has been lifted to the whole element.