نتایج جستجو برای: skin friction

تعداد نتایج: 225372  

Journal: :international journal of advanced design and manufacturing technology 0
ahad zarghami department of engineering, science and research branch, islamic azad university, fars, iran negar ahmadi department of engineering, science and research branch, islamic azad university, fars, iran

a finite volume-lattice boltzmann algorithm is applied to study skin friction behaviour in different channel flows. for this purpose, cell centred scheme is adapted to discretize the boltzmann equation and consistent boundary conditions are also addressed, which resulted in a wider domain of stability. a simulation of flow in a two dimensional channels with different geometries are carried out....

2011
S. Derler L.-C. Gerhardt

In this review, we discuss the current knowledge on the tribology of human skin and present an analysis of the available experimental results for skin friction coefficients. Starting with an overview on the factors influencing the friction behaviour of skin, we discuss the up-to-date existing experimental data and compare the results for different anatomical skin areas and friction measurement ...

Journal: :journal of computational and applied research in mechanial engineering - jcarme 0
l. ramamohan reddy department of mathematics, mekapati rajamohan reddy institute of technology and science, udayagiri, nellore district, a.p, india m. c. raju department of humanities and sciences, annamacharya institute of technology and sciences (autonomous), rajampet – 516126, a.p., india g. s. s. raju department of mathematics, jntua college of engineering pulivendula, pulivendula, a.p, india s. m. ibrahim department of mathematics, gitam university, vishakhaptanam, a.p. - 530045 india

the paper aims at investigating the effects of chemical reaction and thermal radiation on the steady two-dimensional laminar flow of viscous incompressible electrically conducting micropolar fluid past a stretching surface embedded in a non-darcian porous medium. the radiative heat flux is assumed to follow rosseland approximation. the governing equations of momentum, angular momentum, energy, ...

2009

The friction ridge skin occurs on the palmar sides of the hands and the plantar sides of the feet of all primates, including humans. As the name implies, the skin is ridged to produce friction. The friction aids in grasping and walking. The friction ridge skin also contains numerous sweat glands, and the pore openings are located along the tops of the ridges. The friction ridge skin does not co...

Journal: :Journal of the mechanical behavior of biomedical materials 2013
N K Veijgen M A Masen E van der Heide

In the past decades, skin friction research has focused on determining which variables are important to affect the frictional behaviour of in vivo human skin. Until now, there is still limited knowledge on these variables. This study has used a large dataset to identify the effect of variables on the human skin, subject characteristics and environmental conditions on skin friction. The data are...

Journal: :Journal of the Royal Society, Interface 2008
L-C Gerhardt V Strässle A Lenz N D Spencer S Derler

Friction and shear forces, as well as moisture between the human skin and textiles are critical factors in the formation of skin injuries such as blisters, abrasions and decubitus. This study investigated how epidermal hydration affects the friction between skin and textiles.The friction between the inner forearm and a hospital fabric was measured in the natural skin condition and in different ...

Journal: :Skin pharmacology and physiology 2011
Y H Zhu S P Song W Luo P M Elias M Q Man

BACKGROUND AND OBJECTIVES Studies have demonstrated that some cutaneous biophysical properties vary with age, gender and body sites. However, the characteristics of the skin friction coefficient in different genders and age groups have not yet been well established. In the present study, we assess the skin friction coefficient in a larger Chinese population. METHODS A total of 633 subjects (3...

Journal: :Journal of the Royal Society, Interface 2011
C Pailler-Mattei C Guerret-Piécourt H Zahouani S Nicoli

The present study deals with the modification of the human skin biotribological behaviour after tape stripping. The tape-stripping procedure consists in the sequential application and removal of adhesive tapes on the skin surface in order to remove stratum corneum (SC) layers, which electrically charges the skin surface. The skin electric charges generated by tape stripping highly change the sk...

G. S. S. Raju L. Ramamohan Reddy M. C. Raju, S. M. Ibrahim

The paper aims at investigating the effects of chemical reaction and thermal radiation on the steady two-dimensional laminar flow of viscous incompressible electrically conducting micropolar fluid past a stretching surface embedded in a non-Darcian porous medium. The radiative heat flux is assumed to follow Rosseland approximation. The governing equations of momentum, angular momentum, energy, ...

Journal: :international journal of industrial mathematics 2016
s. abdul ‎gaffar‎ v. ramachandra prasad e. keshava reddy

this article investigates the nonlinear, steady boundary layer flow and heat transfer of an incompressible eyring-powell non-newtonian fluid from an isothermal sphere with biot number effects. the transformed conservation equations are solved numerically subject to physically appropriate boundary conditions using a second-order accurate implicit finite-difference keller box technique. the influ...

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