Modelling heat and mass transfer in bread baking with mechanical deformation

Vincent Nicolas (1) , Patrick Salagnac (2) , Patrick Glouannec (1) , Jean Pierre Ploteau (1) , Vanessa Jury (3) , Lionel Boillereaux (3)

1 LIMATB - Laboratoire d'Ingénierie des Matériaux de Bretagne
2 LaSIE - Laboratoire des Sciences de l'Ingénieur pour l'Environnement - UMR 7356
3 GEPEA - Laboratoire de génie des procédés - environnement - agroalimentaire

In this paper, the thermo-hydric behaviour of bread during baking is studied. A numerical model has been developed with Comsol Multiphysics© software. The model takes into account the heat and mass transfers in the bread and the phenomenon of swelling. This model predicts the evolution of temperature, moisture, gas pressure and deformation in French “baguette” during baking. Local deformation is included in equations using solid phase conservation and, global deformation is calculated using a viscous mechanic model. Boundary conditions are specified with the sole temperature model and vapour pressure estimation of the oven during baking. The model results are compared with experimental data for a classic baking. Then, the model is analysed according to physical properties of bread and solicitations for a better understanding of the interactions between different mechanisms within the porous matrix.

Domaines: Sciences de l'ingénieur [physics]

Vincent Nicolas, Patrick Salagnac, Patrick Glouannec, Jean Pierre Ploteau, Vanessa Jury, et al.. Modelling heat and mass transfer in bread baking with mechanical deformation. 6th European Thermal Sciences Conference (Eurotherm 2012), 2012, Poitiers, France. ⟨10.1088/1742-6596/395/1/012146⟩. ⟨hal-00768270⟩