Conventional Fluid Dynamics and CFD Modeling for the Systematic Analysis of the Inside Flow of the Fischer-Tropsch Packed Bed Reactor

Kim, Hyun Seung; Cho, Jae Hoon; Hong, Gi Hoon; Moon, Dong Ju; Shin, Dongil

doi:10.7842/kigas.2016.20.4.65

Journal of the Korean Institute of Gas

2016

DOI: 10.7842/kigas.2016.20.4.65

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Conventional Fluid Dynamics and CFD Modeling for the Systematic Analysis of the Inside Flow of the Fischer-Tropsch Packed Bed Reactor

Hyun Seung Kim¹,

Jae Hoon Cho²,

Gi Hoon Hong³

et al.

Abstract: -Modeling for complex reacting flow in Fischer-Tropsch reactor is one of the challenges in the field of Computational Fluid Dynamics (CFD). It is hard to derive each and every reaction rate for all chemical species because Fisher-Tropsch reaction produces many kinds of hydrocarbons which include lots of isomers. To overcome this problem, after analyzing the existing methodologies for reaction rate modeling, non-Anderson-Schulz-Flory methodology is selected to model the detailed reaction rates. In addition, the… Show more

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2024

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Research on Categorizing and Deriving Proportions of Hanoks for Planning and Designing Hanok Architecture

Shin

2024

Buildings

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A Hanok is a representative wooden structure in Korea and is recognized for its environmentally friendly architecture. Since the 2010s, the demand for Hanoks has increased significantly, but new Hanoks tend to be built with only numerical changes to existing plans or only imitate the shape. This is due to the fact that architectural designers do not have systematic training in Hanoks, so they rely on carpenters with extensive experience in Hanok construction. As designers reconfigure Hanok’s floor plan space using existing drawings to accommodate modernization, the building’s form changes as spatial reduction and expansion occur. This change in form creates problems with the proportions of the elements that make up a Hanok, such as the roof being smaller than the body or the building being taller than the scale of the floor plan. A more significant issue is the lack of recognition of the proportion problem. Therefore, this study has a direct role in the systematic design and construction of Hanoks by deriving objective proportions of Hanoks. To increase the objectivity of the data, numerical data of floor plans, cross-sections, and front elevations of national heritage Hanoks with well-preserved traditional shapes were extracted and analyzed for patterns. Subsequently, similar forms were categorized, and ultimately, the plan, section, and elevation proportions were quantified. The results indicated that the plan was characterized by spatial expansion in the X-axis direction more than the Y-axis while maintaining rectangular proportions. The cross-sectional structure showed a change in height depending on the width of the plan, and it was found that the larger the width of the plan, the lower the height ratio of the cross-section. Of particular interest was the analysis of the ratio of exposed area in the elevation, divided into three areas: roof, Gongpo, and the frame, and the interaction between the roof and Gongpo was confirmed within 63.7% of the total exposed area ratio. This result suggests that the proportion of Hanoks exists despite the different scales, times, and locations of Hanoks. This study can serve as a reference for designers in the process of verifying and modifying design drawings, and it is significant in providing a method and direction for building a new dataset for Hanok design.

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Research on Categorizing and Deriving Proportions of Hanoks for Planning and Designing Hanok Architecture

Shin

2024

Buildings

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show abstract

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Conventional Fluid Dynamics and CFD Modeling for the Systematic Analysis of the Inside Flow of the Fischer-Tropsch Packed Bed Reactor

Cited by 1 publication

References 15 publications

Research on Categorizing and Deriving Proportions of Hanoks for Planning and Designing Hanok Architecture

Research on Categorizing and Deriving Proportions of Hanoks for Planning and Designing Hanok Architecture

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