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An investigation of bread-baking process in a pilot-scale electrical heating oven using computational fluid dynamics
A Anishaparvin1, N Chhanwal, D Indrani
1Human Resource Development, Central Food Technological Research Inst., Council of Scientific and Industrial Research (CSIR), Mysore 570 020, India.
Computational fluid dynamics modeling of bread baking reveals uneven oven airflow causes temperature variations. Bread baked in upper oven trays requires less time for starch gelatinization compared to lower trays.
Area of Science:
- Food Engineering
- Process Simulation
- Baking Technology
Background:
- Optimizing bread baking requires understanding heat transfer and product transformation.
- Computational Fluid Dynamics (CFD) offers a powerful tool for simulating complex baking environments.
- Variations in oven airflow and bread placement can significantly impact baking uniformity.
Purpose of the Study:
- To develop and validate a CFD model for a pilot-scale bread baking oven.
- To investigate the influence of hot air distribution on bread temperature and starch gelatinization.
- To analyze the effect of bread placement within the oven on baking outcomes.
Main Methods:
- Development of a CFD model simulating the bread baking process.
- Simulation of bread products with varied placements within the baking oven.
- Validation of simulation results against experimental bread temperature measurements.
Main Results:
- Nonuniform airflow patterns within the oven cavity result in uneven temperature distribution.
- Bread baked in upper trays exhibited shorter baking times and lower starch gelatinization indices.
- Heat penetration and starch gelatinization were more pronounced on the bread's sides than top or bottom.
Conclusions:
- CFD modeling is effective for analyzing bread baking processes and oven performance.
- Bread placement significantly affects baking time and starch gelatinization, with upper trays being more efficient.
- Optimizing hot air distribution and bread arrangement is crucial for achieving uniform baking results.
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