Zobrazeno 1 - 10
of 105
pro vyhledávání: '"Dong-wook Oh"'
Publikováno v:
Applied Sciences, Vol 14, Iss 18, p 8567 (2024)
This paper investigates the application of Schlieren flow visualization for detecting leaks in pipelines carrying high-temperature fluids. Two experimental setups were constructed: one with a 25 mm PTFE tube featuring a 2 mm diameter perforation, and
Externí odkaz:
https://doaj.org/article/47052e7b66b94c078be552ef1c89a8ef
Publikováno v:
Sensors, Vol 23, Iss 21, p 9009 (2023)
Hydrogen has emerged as a promising carbon-neutral fuel source, spurring research and development efforts to facilitate its widespread adoption. However, the safe handling of hydrogen requires precise leak detection sensors due to its low activation
Externí odkaz:
https://doaj.org/article/0b9dbfb5154549aaae8450b2eab2efb6
Publikováno v:
Virtual and Physical Prototyping, Vol 17, Iss 1, Pp 1-18 (2022)
The mixing of fibrous additives in the polymer base is being widely investigated for improving the mechanical properties of printed parts using fused filament fabrication (FFF). In this study, flow visualisation experiments and computational fluid dy
Externí odkaz:
https://doaj.org/article/ed95b8294cef4f609e372e2901fac0a5
Publikováno v:
International Journal of Geo-Engineering, Vol 12, Iss 1, Pp 1-14 (2021)
Abstract Reinforced retaining walls are structures constructed horizontally to resist earth pressure by leveraging the frictional force imparted by the backfill. Reinforcements are employed because they exhibit excellent safety and economic efficienc
Externí odkaz:
https://doaj.org/article/6ff376290d204474a280a0f3ab0ebcff
Publikováno v:
Applied Sciences, Vol 13, Iss 10, p 6074 (2023)
Tunneling, especially in urban areas, affects many structures on the ground, which directly influences the usability and stability of the structures. The settlement of and axial stress on the pile foundation are important factors that determine the b
Externí odkaz:
https://doaj.org/article/68480711bce54246b9ab58b0c51fd8b8
Publikováno v:
Energies, Vol 14, Iss 24, p 8280 (2021)
In this study, computational fluid dynamics (CFD) analysis was performed to investigate the cause of the thermal stratification in the channel and the temperature non-uniformity of the plate heat exchanger. The flow velocity maldistribution of the ch
Externí odkaz:
https://doaj.org/article/8b2afd2c758347b8a8128bded936006b
Publikováno v:
Applied Sciences, Vol 11, Iss 15, p 6904 (2021)
Vital underground structures such as sewers, power transmission lines, subways, and underpasses are potentially vulnerable to adverse effects from aboveground construction. In this study, the influence of pile installation on nearby existing tunnels
Externí odkaz:
https://doaj.org/article/5b29f89c478e4b44a8e97df5bb302900
Publikováno v:
Applied Sciences, Vol 11, Iss 13, p 6009 (2021)
For tunneling in urban areas, understanding the interaction and behavior of tunnels and the foundation of adjacent structures is very important, and various studies have been conducted. Superstructures in urban areas are designed and constructed with
Externí odkaz:
https://doaj.org/article/63b21a1e12284bfc84a493fc14e3ad6d
Publikováno v:
Applied Sciences, Vol 11, Iss 4, p 1759 (2021)
Recent studies have increasingly investigated construction methods for tunnel excavation because of growing underground space development. Although the New Austrian tunneling method (NATM)—a representative tunnel excavation method—can be applied
Externí odkaz:
https://doaj.org/article/99dd8ae63aa54a868303e8b50e39c8d0
Autor:
Dong-Wook Oh
Publikováno v:
Energies, Vol 13, Iss 1, p 244 (2020)
In this study, the 3ω method was used to determine the thermal conductivity of nanofluids (ethylene glycol containing multi-walled carbon nanotubes (MWCNTs)) with temperature gradients. The thermal modeling of the traditional 3ω method was modified
Externí odkaz:
https://doaj.org/article/355267d3fd5c42b4b5cb91e603c967fc