Assessment of the Coupled Electric-Thermal Numerical Model for Microwave Sintering of KLS-1

Hyunwoo Jin; Gyu-Hyun Go; Jangguen Lee; Hyu-Soung Shin; Young-Jae Kim

doi:10.7843/kgs.2022.38.5.35

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2022 Vol.38, Issue 5 Preview Page Next Page

Research Article

Assessment of the Coupled Electric-Thermal Numerical Model for Microwave Sintering of KLS-1 한국형 인공월면토(KLS-1) 마이크로파 소결을 위한 전기장-열 연계해석 모델 평가

31 May 2022. pp. 35-46

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Abstract

The in-situ resource utilization (ISRU) for sustainable lunar surface and deep space explorations has recently gained attention. Also, research on the development of construction material preparation technology using lunar regolith is in progress. Microwave sintering technology for construction material preparation does not require a binder and is energy efficient. This study applies microwave sintering technology to KLS-1, a Korean lunar simulant. It is crucial to secure the homogeneity to produce a sintered specimen for construction material. Therefore, understanding the interactions between microwaves, cavities, and raw materials is required. Using a numerical model in terms of efficient assessment of several cases and establishment of equipment operating conditions is a very efficient approach. Therefore, this study also proposes and verifies a coupled electric-thermal numerical model through cross-validation and comparison with experimental results. The numerical model proposed in this study will be used to present an efficient method for producing construction material using microwave sintering technology.

Keywords

Construction material

Coupled electric-thermal numerical model

In-situ resource utilization

Microwave sintering

Validation

최근 지속가능한 달 표면 탐사 및 심우주 탐사를 위해 현지자원활용 개념이 주목받으며 월면토를 이용한 건설재료 생산 기술 개발 관련 연구들이 진행되고 있다. 특히, 마이크로파 소결 기술은 에너지 효율 측면에서 유리할 뿐 아니라 별도의 바인더를 필요로 하지 않는다는 장점이 있다. 본 연구에서는 한국형 인공월면토인 KLS-1에 마이크로파 소결 기술을 적용해 보았다. 향후 실제 건설재료로 활용 가능한 크기의 소결체 제작을 위해서는 균질도 확보가 매우 중요한 실정으로 마이크로파, 공동, 재료 간 상호작용에 관한 이해가 요구된다. 따라서 수많은 경우의 수에 관한 효율적 평가 및 장비가동 조건 정립 측면에서 수치모델의 활용은 매우 효율적인 방법이다. 본 연구에서는 전기장-열 연계 해석모델을 제안하고 있으며 교차검증 및 실험결과와의 비교 등을 통해 수치모델의 신뢰성을 검증하였다. 이는 향후 마이크로파 소결 기술을 적용한 건설재료 생산 시 효율적인 방법을 제시하는데 활용 가능할 것으로 판단된다.

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Information

Publisher :The Korean Geotechnical Society
Publisher(Ko) :한국지반공학회
Journal Title :Journal of the Korean Geotechnical Society
Journal Title(Ko) :한국지반공학회 논문집
Volume : 38
No :5
Pages :35-46
Received Date : 2022-04-18
Revised Date : 2022-04-28
Accepted Date : 2022-04-28
DOI :https://doi.org/10.7843/kgs.2022.38.5.35

Journal of the Korean Geotechnical Society ISSN:1229-2427(Print) 2288-646X(Online) 한국지반공학회 논문집

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