Wyniki wyszukiwania - BazTech

Ograniczanie wyników

2 Applied Mechanics and Engineering

Znaleziono wyników: 2

Liczba wyników na stronie

Wyniki wyszukiwania

Sortuj według:

Ogranicz wyniki do:

Comparison of the rheological properties of electrorheological fluids at between shear and flow mode: a new scanning electrorheometer

Shin S., Do J. K., Jeong S. H., Jeong K. B.

Applied Mechanics and Engineering

1999

Vol. 4, no spec.

259-264

A new scanning electrorheometer is presented, based on a single measurement of liquid height variation with respect to time. The apparatus consisting mainly of a pressure vessel, an ER-channel, and a CCD camera connected with computer is described with the experimental procedure. The present method overcomes one of major drawbacks of the viscometer, the inability to produce yield stress in a low shear rate range. The present results with the rheometer is compared with those of the commercially available rheometer and showed an excellent agreement with them.

Numerical heat transfer in a rectangular duct for a non-Newtonian fluid with shear rate-dependent thermal conductivity and temperature dependent viscosity

Shin S., Kim B. S.

Applied Mechanics and Engineering

1998

Vol. 3, no 2

323-337

The present numerical study investigates the effect of the shear rate-dependent thermal conductivity (SRDC) fluids on the heat transfer enhancement in a 2:1 rectangular duct flow. An axially and peripherally constant heat flux boundary conditions (H2) was adopted for a top-wall-heated configuration. The present numerical results of Nusselt numbers for SRDC fluid show the heat transfer enhancement over those of a shear rate-independent thermal conductivity fluid. The heat transfer enhancement is due to the effect of the increased thermal conductivity near the wall, which is attributed to the thigh wall shear rates. The present study proposes a correlation between the Nusselt number and variable thermal conductivity as follows; ___ . Both the temperature and shear rate-dependencies of the properties play important roles on the heat transfer enhancement.