Research on microwave-assisted hot air cooking process of French fries based on multi-physical field simulation modeling

  • WANG Shichao ,
  • TAO Yuan ,
  • YANG Huayu ,
  • LIU Tianyi ,
  • ZHANG Peiyao ,
  • SHI Xiaolu ,
  • TANG Xiangwei ,
  • YAN Bowen ,
  • FAN Daming
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  • 1(State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi 214122, China)
    2(School of Food Science and Technology, Jiangnan University, Wuxi 214122, China)
    3(College of Electronics and Information Engineering, Sichuan University, Chengdu 610064, China)
    4(Midea Group Guangdong Midea Kitchen Appliances Manufacturing Co.Ltd., Foshan 528300, China)
    5(Guangdong Provincial Key Laboratory of Intelligent Kitchen Appliance Key Technologies and 5G+Intelligent Manufacturing Technology Enterprises, Foshan 528300,China)
    6(College of Food Science, Southwest University, Chongqing 400715, China)

Received date: 2026-02-27

  Revised date: 2026-03-25

  Online published: 2026-09-10

Abstract

To improve the reheating efficiency and sensory quality of frozen pre-fried French fries, a microwave-assisted hot air (MAHA) process was developed and systematically evaluated through multiphysics simulation and experimental validation.A 3D coupled numerical model was constructed to analyze the evolution of internal electric fields, temperature changes, and surface heat fluxes during the MAHA process.Different treatment groups, such as MAHA1, were created by varying the spatial positions of heating elements, under a constant total power.Simulation results revealed that the synergy between microwave volumetric heating and hot air convection significantly enhanced energy superposition, with MAHA3 showing the highest local thermal response (370 K) and MAHA2 achieving the best heating uniformity, with a temperature coefficient of variation (COV) as low as 0.092.Process validation showed that MAHA significantly improved the hardness and color of the fries compared to single-mode heating.Although shrinkage increased, the process facilitated the formation of a crisp crust.Moisture characteristic analysis demonstrated that MAHA1 group achieved the best dehydration effect and accelerated the removal of free water.Scanning electron microscopy (SEM) confirmed that MAHA promoted the formation of a uniform, interconnected porous structure, which enhanced moisture diffusion.This study provides a theoretical basis and methodological reference for the optimization and industrial application of microwave-assisted combined cooking technologies.

Cite this article

WANG Shichao , TAO Yuan , YANG Huayu , LIU Tianyi , ZHANG Peiyao , SHI Xiaolu , TANG Xiangwei , YAN Bowen , FAN Daming . Research on microwave-assisted hot air cooking process of French fries based on multi-physical field simulation modeling[J]. Food and Fermentation Industries, 2026 , 52(16) : 262 -270 . DOI: 10.13995/j.cnki.11-1802/ts.046295

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