array for variable diffusivity

.gitlab-ci.yml

@@ -16,4 +16,6 @@ test:
   script:
     - cd ${CI_PROJECT_DIR}
     - cd code
-    - make test
+    - make clean && make
+    - cd sample/4pi-IC1
+    - ../../ex

code/makefile

@@ -1,5 +1,9 @@
 flags = -Wall -O3 -fdefault-integer-8 -fdefault-double-8 -fdefault-real-8  -march=native 
 
+ifdef CHECK
+flags += -fcheck=all
+endif
+
 compiler = gfortran
 
 ex  : test.o ysolve.mod compact.mod

code/ysolve.f90

@@ -11,6 +11,7 @@
      INTEGER :: ncyc=0,int_pr,nx
      REAL, DIMENSION(:,:,:), ALLOCATABLE :: u,y1,y2,yf
      REAL, DIMENSION(:), ALLOCATABLE :: uxt,duxt
+     REAL, DIMENSION(:), ALLOCATABLE :: dm
 
      INTEGER :: istage
      REAL, DIMENSION(5) :: a=(/ 970286171893./4311952581923.,    &
@@ -128,14 +129,14 @@
 
        dely=ABS(dux(1,i))
        sdr=wrate/dely
-       sdd=-diff*d2ux(1,i)/dely
+       sdd=-dm(i)*d2ux(1,i)/dely
        IF (dely.eq.0.) THEN
         sdr=0.; sdd=0.
        ENDIF
        sd=sdr+sdd
        uu=u(1,1,1)
        onelw=(-dux(1,i))/c
-       dd=-diff*d2ux(1,i)
+       dd=-dm(i)*d2ux(1,i)
        if (c.eq.0.) onelw=0.
 
        sav(1,i)=sav(1,i)+yr
@@ -323,6 +324,7 @@
        ALLOCATE(yf(nx,1,1),STAT=ierr)  ; yf=0.
        ALLOCATE(uxt(nx),STAT=ierr)     ; uxt=0.
        ALLOCATE(duxt(nx),STAT=ierr)    ; duxt=0.
+       ALLOCATE(dm(nx),STAT=ierr)      ; dm=diff
 
      END SUBROUTINE READ_INTRO
 
@@ -400,7 +402,7 @@
 ! -0.5*( d(u*Y)/dx + u*dY/dx + Y*du/dx ) + D*d2Y/d2x
          f(i,j,k)=-0.5*( dux(1,i) + ux(2,i)*dux(3,i) + &
           ux(3,i)*dux(2,i) ) &
-                  + diff*d2ux(1,i) - wrate
+                  + dm(i)*d2ux(1,i) - wrate
          IF (i.eq.nx) THEN
           Ly=ux(2,nx)*dux(3,nx)                           ! Ly = u*dYr/dx
           f(nx,1,1)=-wrate