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Effect of Rotation in Radial Microwave Irradiation: A Numerical Approach

Author

Listed:
  • María Cruz Navarro

    (Geonum Group, Facultad de Ciencias y Tecnologías Químicas-IMACI, Universidad de Castilla-La Mancha, 13071 Ciudad Real, Spain
    These authors contributed equally to this work.)

  • Damián Castaño

    (Geonum Group, Escuela de Ingeniería Industrial y Aeroespacial de Toledo-IMACI, Universidad de Castilla-La Mancha, 45004 Toledo, Spain
    These authors contributed equally to this work.)

Abstract

In this paper, we study numerically the effect of rotation within a solvent in a cylindrical container subject to radial microwave irradiation. Two solvents with different dielectric and thermophysical properties are used: water and ethylene glycol. The samples are irradiated at a frequency of 2.45 GHz and a power of 80 W. The higher the rotation rate is, the faster the state becomes fully 3D. For water, the bifurcation occurs earlier in time due to its lower viscosity. For ethylene glycol, more susceptible to microwaves than water but with a higher viscosity, the flow remains axisymmetric for a long time and it becomes 3D when it has almost reached a stationary homogeneous maximum temperature all along the cell. We use a 3D temporal model coupling heat and momentum equations and the Maxwell equations based on spectral methods to perform the simulations.

Suggested Citation

  • María Cruz Navarro & Damián Castaño, 2025. "Effect of Rotation in Radial Microwave Irradiation: A Numerical Approach," Mathematics, MDPI, vol. 13(3), pages 1-18, January.
    • Handle: RePEc:gam:jmathe:v:13:y:2025:i:3:p:357-:d:1574245
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    Keywords

    rotation; microwaves; numerical;
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