Numerical modeling of microwave heating

Shukla, Ajay Kumar; Mondal, Avijit; Upadhyaya, Anish

doi:10.2298/sos1001099s

Cited by 24 publications

(10 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Examples of the microwave heating process models based on numerical solution of the heat conduction equation with temperature‐dependent coefficients by methods based on finite elements, finite differences, etc. can be found in Refs …”

Section: Heat Transfer Aspects and Sintering Simulationsmentioning

confidence: 99%

Microwave Sintering: Fundamentals and Modeling

2013

View full text Add to dashboard Cite

This paper reviews the basic physical notions underlying microwave sintering and the theoretical and numerical models of the microwave sintering process. The propagation and absorption of electromagnetic waves in materials, and the distribution of electromagnetic field in cavity resonators that serve as applicators for microwave processing are discussed and the electromagnetic modeling of such applicators is reviewed. The microwave absorption properties of ceramic and metal powder materials and the methods of their description are addressed. Self‐consistent electromagnetic and thermal models that are capable of predicting the temperature distribution in the microwave‐heated materials and dynamic effects such as thermal runaway instabilities are reviewed. The multiphysics simulations that combine electromagnetic, thermal, and sintering models and result in predicting densification, shrinkage, and grain structure evolution are discussed in detail. The significance of microwave nonthermal effects in sintering is demonstrated based on the experimental results, and the models of such effects are reviewed.

show abstract

Section: Heat Transfer Aspects and Sintering Simulationsmentioning

confidence: 99%

Microwave Sintering: Fundamentals and Modeling

2013

View full text Add to dashboard Cite

show abstract

“…However, author considers measured spectrum [9] to be the best source for accurate modeling. The theoretical spectrum defined by (24) is shown in Fig.2, where, f = 2.45 GHz, σ 2 =8.86x10 10 and A = 7.977 W. The distribution corresponds to 800W of total power.…”

Section: Resultsmentioning

confidence: 99%

“…Power absorbed is calculated using Poynting power theorem [9]. For non-magnetic materials microwave power absorbed in a unit volume is given by [10]:…”

Section: Theorymentioning

confidence: 99%

See 1 more Smart Citation

Full wafer 3D modelling of power distribution during microwave annealing of doped c-Si

Das¹

2014

IOSRJEEE

View full text Add to dashboard Cite

“…The finding showed that high electric field and high temperature without spark were formed in dielectric material. Shukla et al [11] numerically modeled susceptor-assisted microwave heating. The model result reveals the maximum temperature increase by using susceptor and the efficiency of microwave heating depends on the sample size and thermal conductivity.…”

Section: Introductionmentioning

confidence: 99%

Electric Field Prediction using Micro-plasma Inside a Microwave Cavity for Soot Oxidation

Al-Wakeel

Karim

Al-Kayiem

2014

MATEC Web of Conferences

View full text Add to dashboard Cite

Abstract. The reduction of the harmful emission soot is necessary in recent years due to the environmental protection regulation. Soot is a carbonaceous matter and a strong absorber of microwave energy. Microwave heating offers the advantage over conventional heating to oxide soot. Where plasma is high electric field that leads to instantaneous temperature rising. This paper proposes a recent concept for soot oxidation using micro-plasma in a microwave cavity. The concept was presented by simulating the electric field using microwave heating and thin metal object. Five cases were examined numerically in a mono-mode TE10 microwave cavity WR430 having closed surfaces of perfect electric conductors working under 2.45 GHz frequency and 1500 W power supply to predict the electric field and dissipated heat distribution. The methodology of prediction was implemented using ANSYS based on FEM. The present prediction results showed higher electric field (400 kV/m) and high dissipated heat (3.7x10 10 W/m 3 ) can be obtained for a soot sample backed with metal rods inserted vertically with gaps not exceeding 1.5 mm between the rods tips. Also increasing the number of metal rods, from 8 to 14 increases the maximum value of electric field formed in the soot sample to 575 kV/m. The simulation results revealed the ability of achieving high electric field by using microwave heating with the assistance of metal objects.

show abstract

Numerical modeling of microwave heating

Cited by 24 publications

References 10 publications

Microwave Sintering: Fundamentals and Modeling

Microwave Sintering: Fundamentals and Modeling

Full wafer 3D modelling of power distribution during microwave annealing of doped c-Si

Electric Field Prediction using Micro-plasma Inside a Microwave Cavity for Soot Oxidation

Contact Info

Product

Resources

About