When a finger scans a non-smooth surface, a sensation of roughness is experienced. A similar sensation is felt when a finger is in contact with a mobile surface vibrating in the tangential direction. Since an actual finger-surface interaction results in a varying friction force, how can a measured friction force can be converted into skin relative displacement. With a bidirectional apparatus th...

Dimples are small concavities imprinted on a flat surface, known to affect heat transfer and also flow separation aerodynamic drag bluff bodies when acting as standard roughness. Recently, dimples have been proposed roughness pattern that is capable of reducing the turbulent plate by providing reduction skin friction compensates dimple-induced pressure leads global benefit. The question whether...

In this paper, we present a framework for both skin and cloth deformation. Traditionally, skin and cloth deformations are managed by a non-unified strategy although the skin interacts on clothes and vice versa. In general, the skin is considered as a rigid surface on which the clothes have no effect. We propose in this paper a unified approach for cloth and body deformation. Our system is able ...

The thermo-hydraulic behavior of the air flow over a two dimensional ribbed channel wasnumerically investigated in various rib-width ratio configurations (B/H=0.5-1.75) atdifferent Reynolds numbers, ranging from 6000 to 18000. The capability of differentturbulence models, including standard k-ε, RNG k-ε, standard k-ω, and SST k-ω, inpredicting the heat transfer rate was compared with the experi...

There are numerous applications in which products or materials are in contact with the human body, including the skin, such as clothing, fine papers and even cosmetics. In this sense, and with special emphasis on cosmetic products, there are several parameters for assessing its quality and applicability. The coefficient of friction is one of these parameters for the objective assessment of a co...

BACKGROUND Patients who have received a hematopoietic cell transplantation can develop graft-versus-host disease (GVHD). The liver, the gastrointestinal tract, and/or the skin can be affected by GVHD. Chronic sclerotic-type cutaneous GVHD can occur at sites of repetitive skin friction. PURPOSE To describe isomorphic sclerotic-type GVHD and review chronic GVHD appearing in a cutaneous immunoco...