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Article
Comparative study on implementation technology for enhancing performance of combined cycle power plant in system perspective
In the present study, several technologies are compared and evaluated for improving the power and efficiency of a combined cycle power plant (CCPP) using liquid natural gas (LNG). The three technologies are ap...
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Article
Aerodynamic Performance of Multi-stage Axial Compressor Considering Cold-to-Hot Deformation Effect
Predicting the exact performance of multi-stage compressors for an aircraft gas turbine is important in the design process and calculation of off-design characteristics. This study explores the quantitative ef...
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Article
Adaptation Method for Overall and Local Performances of Gas Turbine Engine Model
An adaptation method was proposed to improve the modeling accuracy of overall and local performances of gas turbine engine. The adaptation method was divided into two steps. First, the overall performance para...
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Article
Study on the turbulence model sensitivity for various cross-corrugated surfaces applied to matrix type heat exchanger
Diverse cross-corrugated surface geometries were considered to estimate the sensitivity of four variants of k-ε turbulence models (Low Reynolds, standard, RNG and realizable models). The cross-corrugated surfa...
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Article
Improvement of structural design accuracy using a casting-structural interface (CSI) method in large-scale sand castings
In general, thermal residual stress is generated in casting products as a result of non-uniform cooling, phase transformation from liquid to solid states, and thermo-mechanical constraints. Thus, understanding...
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Article
Numerical study on the thermal and flow characteristics of periodically formed inner wavy structures in a cooling channel
In industrial fields of machine and aerospace, cooling systems consisting of channels are widely used to increase energy efficiency and prevent system overheat. In cooling channels, a reduced pressure drop, an...
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Article
Erratum to “Transient performance prediction of an axial compressor considering VIGV operation speeds” [JMST 28 (10) (2014) 4099∼4107]
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Article
Fabrication of micro-scale wrinkles on a curved surface using weak-polymerization and surface shrinkage
We proposed a new process to fabricate micro-scale polymer wrinkles on a curved surface. A UV-curable resin layer on a substrate is weakly polymerized by a small dose of UV-light. By the exposure, there is a c...
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Article
Transient performance prediction of an axial compressor considering VIGV operation speeds
In the present study, transient performance and flow characteristics of a 1.5-stage compressor with VIGV are investigated using CFD. The level of accuracy of CFD approach is evaluated by comparing the predicte...
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Article
A numerical study on the behavior of the water meniscus formed between a flat surface and a flat or circular tip
We numerically investigated the behavior of the water meniscus formed between a flat surface and a tip surface, which is flat or circular in shape, using the lattice Boltzmann method (LBM). The shape of the wa...
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Article
An experimental study on the pressure drop and heat transfer through straight and curved small diameter tubes
A tube type heat exchanger is often the only solution when minimum pressure loss is a requirement. In addition, small diameter tubes are preferable because of an increased heat transfer area within an acceptab...
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Article
A numerical study of the fluid flow and heat transfer around a single row of tubes in a channel using immerse boundary method
The analysis of the time-dependent and two-dimensional fluid flow and heat transfer around a single row of tubes in a channel is performed numerically. Due to its fundamental significance and practical importa...
