Numerical simulation of temperature distribution in cylindrical ilmenite (FeTiO3) due to microwave heating

Hidayat, Mas Irfan P.; Fellicia, Dian Mughni; Rafandi, Ferdiansyah Iqbal

doi:10.1063/1.5030240

Cited by 1 publication

(2 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In Figure A1 (Appendix A), temperature profiles along the center line of cylindrical ilmenite with respect to the variation of microwave heating times for different thickness are shown. Note that the simulation results for the cylindrical ilmenite were also reported previously in Reference [34], but they are represented here for clarity of comparison with the FE simulation results obtained for the slab of ilmenite. Figure 5 presents temperature distribution inside the ilmenite slab after being heated for 4 min with respect to the variation of slab height.…”

Section: Simulation Results For Ilmenite Sample With Cylinder Shapementioning

confidence: 77%

“…The number of elements employed was 168,000 elements. It is noted here that the simulation results previously presented in Reference [34] for a cylinder of beef were extended by adding the FE results for a slab of salmon, thus showing the applicability of numerical simulations using FEM for investigating a wide range of microwave heating problems and applications.…”

Section: Verification Of Fe Simulationmentioning

confidence: 72%

See 1 more Smart Citation

Effects of Sample Shapes and Thickness on Distribution of Temperature inside the Mineral Ilmenite Due to Microwave Heating

Hidayat

Felicia

Rafandi³

et al. 2020

Minerals

Self Cite

View full text Add to dashboard Cite

The study of interaction between microwave radiation and minerals is gaining increasing interest in the field of minerals and material processing. Further studies are, however, still required to deepen the understanding of such microwave heating mechanisms in order to develop innovative techniques for mineral treatment using microwave heating. In this paper, effects of sample shapes and thickness on the distribution of temperature inside the mineral ilmenite (FeTiO3) due to microwave heating were numerically studied using the finite element (FE) method. The analysis was carried out in such a way that the flux of microwave energy was converted into an equivalent amount of heat generation in the mineral through the Poynting theorem of conservation of energy for the electromagnetic field. In this study, as a first attempt, the cylinder and slab of ilmenite were modeled to be irradiated from top and bottom surfaces with the variation of cylinder and slab thicknesses. Temperature-dependent material properties of ilmenite were taken into account in the FE simulation. Corresponding boundary conditions were then applied accordingly to the cylinder and slab of ilmenite with comparable characteristic length. Numerical results showed that, in terms of temperature differences between locations having maximum and minimum temperatures, slab geometries tended to produce higher values in comparison to those of cylinder geometries with the thickness variation, while the profiles of temperature inside the ilmenite samples were similar for both geometries. For the same duration of microwave heating, the slab geometry, hence, induced greater non-uniformity of temperature inside the ilmenite. It was also observed that, for the ilmenite samples with thickness value greater than 1.5 cm, the hotspot locations were not in the center of the sample, but on the surface of sample. Moreover, from several thickness values considered in this study, the ilmenite sample with thickness value of 3 cm gave a good trade-off between the maximum temperature value attained and temperature differences inside the sample, for both geometries. Thus, the shape and thickness of ilmenite samples affect the effectiveness of microwave heating of ilmenite, in terms of maximum temperature attained, temperature differences, and uniformity of temperature.

show abstract

Section: Simulation Results For Ilmenite Sample With Cylinder Shapementioning

confidence: 77%

Section: Verification Of Fe Simulationmentioning

confidence: 72%

Effects of Sample Shapes and Thickness on Distribution of Temperature inside the Mineral Ilmenite Due to Microwave Heating

Hidayat

Felicia

Rafandi³

et al. 2020

Minerals

Self Cite

View full text Add to dashboard Cite

show abstract

Numerical simulation of temperature distribution in cylindrical ilmenite (FeTiO3) due to microwave heating

Cited by 1 publication

References 12 publications

Effects of Sample Shapes and Thickness on Distribution of Temperature inside the Mineral Ilmenite Due to Microwave Heating

Effects of Sample Shapes and Thickness on Distribution of Temperature inside the Mineral Ilmenite Due to Microwave Heating

Contact Info

Product

Resources

About