dKdX.f File Reference

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Functions/Subroutines
subroutine	dkdx (x, u, uprime, rpar, ipar)

Function/Subroutine Documentation

dkdx()

subroutine dkdx	(	real*8	x,
		real*8, dimension(1)	u,
		real*8, dimension(1)	uprime,
		real*8, dimension(*)	rpar,
		integer	ipar
	)

!
      implicit none
      integer ipar
      real*8 x,u(1),uprime(1),rpar(*),zk0,phi
!
!     defining the parameters
      phi=rpar(1)
      zk0=rpar(3)

      uprime(1)=datan(1.d0)*0.315/(phi)*x**1.6*
     &    ((zk0*u(1))**1.75d0-
     &    (dabs(1.d0-u(1)))**1.75d0*(1.d0-u(1))/dabs(1.d0-u(1)))
     &    -2.d0*u(1)/x
!
      return
!