This correlation has been developed to represent the data for a wide range of temperature from 30 to 200掳C. The correlation is based on experimental kinematic viscosity data for twenty TBP fractions of Arab heavy, Arab medium and Arab light and Arab extra-light crude oils. The proposed ...
The viscosity and density for binary and ternary systems showed increases with a higher concentration of hydrocolloids (xanthan gum or carboxymethyl cellulose) and reductions with increasing temperature. The presence of NaCl in the ternary systems produced an electro-viscous effect that influenced the ...
In fluids (liquid or gas), resistance (or friction) to flow is known as viscosity. It arises due to the interactions between the entities of fluids. A given temperature and pressure are characteristic of a given fluid. Viscosity is of two types kinematic viscosity and dynamic viscosity. Viscos...
νl(m2s−1) –kinematic viscosityof condensation liquid;al(m2s−1) – thermal diffusivity of condensation liquid;Pe(–) – Péclet heat number (p. 180);Re(–) – Reynolds number (p. 81). It characterizes the relation between the temperature and velocity fields in condensation or, alterna...
One of the parameters that influence the biodiesel yield and rate of the transesterification process is the reaction temperature. High reaction temperatures may decrease the viscosity of the oil, but the preferred temperature should be lower than the boiling point of the alcohol to prevent evaporation...
aAlternatively, an empirical analytic expression2 can be used. For lubricants with similar kinematic viscosities, the one with the higher VI is “better” in the sense that it exhibits smaller changes in viscosity with temperature. 二者择一地,可以使用经验主义的分析expression2。 为润滑剂以相似的运...
The proposed correlations proved to be more accurate in predicting the viscosity at 37.78°C and 98.89°C with average absolute deviations of 0.39 and 0.72 mm/s, respectively. Another objective was to develop a relation for the variation of viscosity with temperature to predict the viscosity of ...
temperature was obtained,and the calculated results are in good agreement with the experimental values.By analyzing experimental data,it was found that both the viscosity and the size of atomic clusters of aluminum melt are monodrome functions of temperature,and the relation between v(T) and d(T...
temperature was obtained,and the calculated results are in good agreement with the experimental values.By analyzing experimental data,it was found that both the viscosity and the size of atomic clusters of aluminum melt are monodrome functions of temperature,and the relation between v(T) and d(T...
viscositySDIPEGNowadays, membrane technology plays an essential role in water treatment as a method of producing good-quality water. Its success is due to its ease of implementation, high efficiency and low cost. However, fouling of the active layer of the membranes is one of the main problems...