Biography:

In the past Yangsoo Son has collaborated on articles with Kyunghoon Min. One of their most recent publications is Heat and moisture transfer from skin to environment through fabrics: A mathematical model. Which was published in journal International Journal of Heat and Mass Transfer.

More information about Yangsoo Son research including statistics on their citations can be found on their Copernicus Academic profile page.

Yangsoo Son's Articles: (2)

Heat and moisture transfer from skin to environment through fabrics: A mathematical model

AbstractA mathematical model is set up to simulate the heat and moisture transfer from skin to environment through fabrics by including the radiation heat transfer between surfaces and the surface diffusion along fibers. The result shows that the contributions of radiation and conduction through air are approximately 20% each of the total heat flux. The surface diffusion does not play a significant role in the total moisture transport if the surface diffusion is restricted to the chemisorption of water molecules onto fiber surfaces. It is concluded that the microclimate plays the most significant role in the heat and moisture transfer from skin to environment.

Spreading of inkjet droplet of non-Newtonian fluid on solid surface with controlled contact angle at low Weber and Reynolds numbers

AbstractThe dynamics of inkjet droplet of non-Newtonian fluid on glass substrates was investigated experimentally and compared with that of Newtonian fluid. The non-Newtonian fluids used here were 100 ppm solutions of polyethylene oxide (300k, 600k and 900k) dissolved in the 1:1 mixture of water and glycerin. Weber number (We) was 2–35 and Ohnesorge number was fixed at 0.057 ± 0.003. The wettability of solid substrate was also varied. The diameter of inkjet droplets in the present study was about 50 μm and was much smaller than the size of the previous studies on drop impact. Due to the development of a thin and long thread at the rear of the main drop the jetting window of polymer solution was much narrower than that of Newtonian fluid, and hence the experimental range of Weber number was restricted. The impact scenarios of non-Newtonian inkjet droplets were found to be qualitatively different from those of Newtonian droplets during the receding phase while they were almost the same as the Newtonian fluid case during the kinematic phase. The spreading diameter at the equilibrium was well correlated with the modified Weber number (We′ = We/(1 − cos θeq)) as in the case of Newtonian fluid, where θeq is the equilibrium contact angle. The similarity or disparity between the Newtonian and non-Newtonian cases was discussed considering the conformation of polymer chains during each stage of drop deformation.

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