Search Results - "Jin Hwan Ko"

Power enhancement of a μ l-scale microbial fuel cells by surface roughness by Kim, Jihoon, Hwan Ko, Jin, Lee, Jaehyun, Jun Kim, Min, Byun, Doyoung

“…In recent years, microbial fuel cells (MFCs) have gained much attention due to their potential to generate energy in a sustainable manner from living…”
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Camber effect on the stability and power performance of a right-swing hydrofoil turbine by Hai Nguyen Le Dang, Tuyen Quang Le, Dasom Jeong, Jin Hwan Ko

“…In this study, performance of a right-swing turbine with a cambered hydrofoil was analyzed by CFD numerical simulations to assess its stability and power…”
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Comparison on numerical solutions for mid-frequency response analysis of finite element linear systems by Hwan Ko, Jin, Byun, Doyoung

“…Mid-frequency response analysis often faces computational difficulties when a conventional modal approach is used for a finite element linear system. In this…”
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Offshore Experimental Work of a Pump Directly Driven by a Fully Passive Dual-Flapping-Foil Hydrokinetic Turbine by Kim, Jihoon, Jung, Sejin, Jung, Muhea, Choi, Sangkyu, Jeong, Dasom, Ko, Jin Hwan

“…In this study, a previously developed fully passive hydrokinetic turbine with two flapping foils was used to directly drive a reciprocating pump, and the…”
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Aggregation multigrid method for schur complement system in FE analysis of continuum elements by Ko, Jin-Hwan, Lee, Byung Chai

“…An aggregation multigrid method (AMM) is a leading iterative solver in solid mechanics. Recently, AMM is applied for solving Schur Complement system in the FE…”
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Improvement of the aerodynamic performance by wing flexibility and elytra–hind wing interaction of a beetle during forward flight by Le, Tuyen Quang, Truong, Tien Van, Park, Soo Hyung, Quang Truong, Tri, Ko, Jin Hwan, Park, Hoon Cheol, Byun, Doyoung

“…In this work, the aerodynamic performance of beetle wing in free-forward flight was explored by a three-dimensional computational fluid dynamics (CFDs)…”
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Investigation of phase difference and separation distance effects in the design of a dual flapping hydrofoil turbine by Jeong, Dasom, Nguyen Le Dang, Hai, Ko, Jin Hwan

“…In this study, a parametric analysis was conducted for the design of a suggested dual flapping hydrofoil turbine. A Navier–Stokes‐based computational fluid…”
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Effects of corrugation of the dragonfly wing on gliding performance by Kim, Won-Kap, Ko, Jin Hwan, Park, Hoon Cheol, Byun, Doyoung

“…We investigate the aerodynamic performance of the dragonfly wing, which has cross-sectional corrugation, via a static 2-dimensional unsteady simulation…”
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Experimental and numerical study of a dual configuration for a flapping tidal current generator by Kim, Jihoon, Quang Le, Tuyen, Hwan Ko, Jin, Ebenezer Sitorus, Patar, Hartarto Tambunan, Indra, Kang, Taesam

“…In this study, we conduct experimental and consecutive numerical analyses of a flapping tidal current generator with a mirror-type dual configuration with…”
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Wetting Characteristics of Insect Wing Surfaces by Byun, Doyoung, Hong, Jongin, Saputra, Ko, Jin Hwan, Lee, Young Jong, Park, Hoon Cheol, Byun, Bong-Kyu, Lukes, Jennifer R.

“…Biological tiny structures have been observed on many kinds of surfaces such as lotus leaves, which have an effect on the coloration of Morpho butterflies and…”
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Camber effect on the stability and power performance of a right-swing hydrofoil turbine by Nguyen Le Dang, Hai, Le, Tuyen Quang, Jeong, Dasom, Ko, Jin Hwan

“…In this study, performance of a right-swing turbine with a cambered hydrofoil was analyzed by CFD numerical simulations to assess its stability and power…”
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Development of unmanned underwater SPT (Standard Penetration Test) equipment by Woo-Tae Kim, In-Sung Jang, Jin-Hwan Ko, Sang-Hoon Han, Bum-Sang Kim

“…Various offshore structures such as long-span bridge, offshore wind farm, undersea tunnel and manmade island, etc are now being constructed all around the…”
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Transient response analysis by model order reduction of a Mokpo-Jeju submerged floating tunnel under seismic excitations by Han, Jeong Sam, Won, Boreum, Park, Woo-Sun, Ko, Jin Hwan

“…In this study, a model order reduction technique is applied to solve the transient responses of submerged floating tunnel (SFT) from Mokpo to Jeju under…”
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Hydrodynamic characteristics of cambered NACA0012 for flexible-wing application of a flapping-type tidal stream energy harvesting system by Sitorus, Patar Ebenezer, Park, Jin–Soon, Ko, Jin Hwan

“…In recent years, nonlinear dynamic models have been developed for flapping-type energy harvesting systems with a rigid wing, but not for those with a flexible…”
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Structural design and analysis of composite blade for horizontal-axis tidal turbine by Nguyen Quang Duy, Park Hoon Cheol, Kang Taesam, Ko Jin Hwan

“…In this work, we report on the structural design of a 5-m-long composite blade intended for use in a horizontal-axis tidal turbine. The blade geometry is…”
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Shaping characteristics in alginate hydrogel encapsulation via a two-fluid spraying method by Seong, Baekhoon, Kim, Jihoon, Jung, Sejin, Kang, Giho, Lee, Jinkee, Byun, Doyoung, Lee, Kwang-Soo, Jang, Hyung-Seok, Ko, Jin Hwan

“…Recently, an alginate hydrogel containing amphiphilic liposomes was suggested for application to an antifouling coating. In this study, we investigate the…”
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Flow-driven rotor simulation of vertical axis tidal turbines: A comparison of helical and straight blades by Le, Tuyen Quang, Lee, Kwang-Soo, Park, Jin-Soon, Ko, Jin Hwan

“…In this study, flow-driven rotor simulations with a given load are conducted to analyze the operational characteristics of a vertical-axis Darrieus turbine,…”
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Effect of a marine bacterial biofilm on adhesion and retention of pseudo barnacle to silicone coating surface by Jung, Ho-Sup, Kim, Keesung, Ko, Jin Hwan

“…The effect of a marine bacterial Cytophaga lytica (C. lytica) biofilm on the adhesion and retention of apseudobarnacle (epoxy adhesive) to platinum-cured…”
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High-frequency response analysis via algebraic substructuring by Ko, Jin Hwan, Bai, Zhaojun

“…High‐frequency response analysis (Hi‐FRA) of large‐scale dynamical systems is critical to predict the resonant behavior of modern micro‐devices and systems…”
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Two-level preconditioner via a rigid body-based aggregation for the Schur complement system by Ko, Jin Hwan, Eom, Jaesung

“…Most aggregation multigrid (MG) methods employ rigid body modes in constructing the prolongators and are famous for fast convergence with good efficiency…”
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