The thermodynamic field theory. exposed in this issue. allows to describe thermodynamic systems. even when evolving far away from equilibrium. More particularly it is shown that far from equilibrium the tensor which relates forces with flows will display a skew-symmetric part. In this work we describe a simple chemical model characterised by the existence of a limit cycle (chemical oscillations). This model allows to compute the generalized flows taking into account Onsager's theory and by making an appropriate choice of fluxes and forces which leaves invariant the expression of the entropy production. We show that the numerical results are in agreement with the theoretical predictions.