Chang-Bok Rim, Kum‐Chol Om, Guoyu Ren, Su-Song Kim, Hyok-Chol Kim, O. Kang-Chol,
The Weather Research and Forecasting model (WRF) includes a wildland fire-behavior module, WRF-Fire, which simulates wildland fire interactions with the atmosphere. Combining the WRF model with the coupled weather–wildland fire model allows simulations of wildland fire propagation. In this paper, we have chosen the method that performs simulation of wildfire spread progress coupled with prepared weather data as soon as a wildfire is found. In simulation of the weather field data, a one-way nest model ...
Tópico(s): Remote Sensing and LiDAR Applications
2017 - Elsevier BV | Applied Geography
Kyong‐Ho Sim, Yun Chol Li, Chun‐Ho Li, M. S. Kim, Hyok‐Chol Kim,
The flow stress evolution of a fine‐grained Ti 2 AlNb‐based alloy fabricated by mechanical alloying and subsequent spark plasma sintering is experimentally acquired for different deformation conditions. Isothermal uniaxial compression test is conducted in the deformation temperature range of 950–1070 °C and the strain rate range of 0.001–1 s −1 . Based on the experimental flow stress with friction correction, the modified Johnson–Cook model and strain‐compensated Arrhenius‐type model are established ...
Tópico(s): Microstructure and mechanical properties
2020 - Wiley | Advanced Engineering Materials
Kim Chung Song, Tal Hwan Kye, Hyok Chol U, Jong Hyok Rim,
In the atmosphere, R 2 Co 17 -type SmCo-based magnetic powders (Sm(Co 0.6 Cu 0.08 Fe 0.3 Zr 0.02 ) 8.35 ) a bit different in oxidation process as compared with bulk permanent magnet. This article describes investigation of the oxidation process of Sm(Co 0.6 Cu 0.08 Fe 0.3 Zr 0.02 ) 8.35 magnetic powders at up to 500 °C through thermogravimetric/differential thermal analysis (TG/DTA) and X-ray diffraction (XRD) technology. The result shows that oxides such as CuO, Co 3 O 4 , and CoFe 2 O 4 are firstly formed ...
Tópico(s): Magnetic and transport properties of perovskites and related materials
2022 - IEEE Magnetics Society | IEEE Transactions on Magnetics