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document
Lee, B.J. (author), Kim, C. (author)
A new design approach for a delicate treatment of complex geometries such as wing/body configuration is arranged using overset mesh technique under large scale computing environment. For the in-depth study of the flow physics and highly accurate design, several special overlapped structured blocks such as collar grid, tip-cap grid, and etc....
conference paper 2006
document
Lee, J.I. (author), Kim, C. (author), Kim, K.H. (author)
The purpose of this paper is to develop an accurate analysis code for the flow of arc-heater by employing advanced numerical models. Governing equations are hyperbolic-type axisymmetric Navier-Stokes equations which include joule heating by arc, radiation and turbulent transport effect. Joule heating is simply calculated by Ohm’s law with the...
conference paper 2006
document
Kim, D.S. (author), Kim, M.K. (author), Kim, S.H. (author), Choo, Y.W. (author)
The investigation on the seismic behavior of dams becomes crucial but is limited due to lack of experimental or field data. This paper aims to experimentally simulate the seismic behavior of three types of dams; earth-core rock-fill dam (ECRD), concrete-faced rock-fill dam (CFRD), and composite dam which combines concrete dam and CFRD. A series...
conference paper 2012
document
Kim, H.D. (author), Yi, S.J. (author), Kim, K.C. (author)
This paper reports a technique for measuring the velocity and dissolved oxygen (DO) concentration fields simultaneously in a micro-scale water flow using oxygen sensitive particles (OSParticles) and a conventional micro particle image velocimetry (?-PIV) method. The OSParticles were fabricated using a dispersion polymerization method by...
conference paper 2013
document
Wang, K. (author), Tu, X.C. (author), Kim, H.B. (author)
In this paper, echo-PIV and UDV technique were applied to measure the velocity fields of a pipe flow system. The working fluid is mixture of water and kaolin particle. The flow rate of mixture is 0.15 lpm. The error of peak velocity between echo-PIV and UDV were obtained and compared with the theoretical values. This study indicates the...
conference paper 2013
document
Heo, G.E. (author), Seo, A. (author), Kim, R.E. (author), Kim, S.W. (author), Kim, S.K. (author)
Three physiological functions of nasal breathing (air-conditioning, filtering and smelling) are closely related with airflow characteristics in the human nasal airway. Since fluid mechanical properties are heavily affected by the geometry of flow passage, the changes in anatomical shape of nasal cavity by disorders or surgical treatments alter...
conference paper 2013
document
Choi, Y.S. (author), Seo, K.W. (author), Lee, S.J. (author), Kim, S.H. (author), Yun, J.H. (author)
The flows in a naturally evaporating liquid droplet confined by two flat plates were investigated experimentally. A diluted sodium-chloride (NaCl) aqueous solution was used to form the confined droplets. The evaporation of water at the free surface of the droplet built up a concentration gradient inside the solution, which induced a natural...
conference paper 2013
document
Kim, S. (author), Kim, D.E. (author), Euh, D.J. (author)
Thermal stratification is encountered in large pool of water increasingly being used as heat sink in new generation of advanced reactors. These large pools at near atmospheric pressure provide a heat sink for heat removal from the reactor or steam generator, and the containment by natural circulation as well as a source of water for core cooling...
conference paper 2013
document
Lee, C.H. (author), Kim, D.Y. (author), Kim, H.D. (author), Kim, K.C. (author)
Dynamic behaviour and heat transfer characteristics of impinging droplets on a hot surface were studied experimentally. De-ionized water droplet was made through a 31G injection needle and the droplet size was 2 mm. A sapphire plate was heated up to 300ºC by a hotplate. A high speed camera was used for visualization, and the frame rate was 4000...
conference paper 2013
document
Im, S. (author), Heo, G.E. (author), Sung, H.J. (author), Kim, S.K. (author)
Flow inside a scaled model of nasal cavity was measured by tomographic PIV. The model was constructed with transparent silicon. A refractive index of working fluid was matched to the model index by mixing glycerol and water. Four cameras and double pulse laser system were used for tomographic PIV. To obtain high SNR, red fluorescence particles...
conference paper 2013
document
Kim, J. C. (author), Park, C. (author)
conference paper 2013
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