Fixed an issue in which the logical coordinates of the particle (xi)

were not being initialized and was causing particles to get stuck in
  the iteration loop.

src/modules/moduleInject.f90

@@ -242,6 +242,8 @@ MODULE moduleInject
                           self%v(2)%obj%randomVel(), &
                           self%v(3)%obj%randomVel() /)
 
+        !Obtain natural coordinates of particle in cell
+        partInj(n)%xi = mesh%vols(partInj(n)%vol)%obj%phy2log(partInj(n)%r)
         !Push new particle with the minimum time step
         CALL solver%pusher(self%sp)%pushParticle(partInj(n), tauMin)
         !Assign cell to new particle