A third equation relating the logarithm of viscosity to the fifth power of absolute temperature has been shown to apply over the full range of materials, temperatures and viscosities examined. The significance of the constants used in these equations is discussed with respect to their value in ...
1)viscosity-temperature equation粘温方程 2)viscosity equation粘度方程 1.In addition, the results are used to obtain a function of temperature as theviscosity equationof saturated liquid.为将碳酸二甲酯作为替代清洁燃料的研究提供基本物性数据,使用改型的乌别洛特毛细管粘度计对283 273～383 104K温度区间的...
fluid in equilibrium there is only one value of the local pressure (p) consistent with the stated values for ρ andT. These three quantities are linked together by what is called theequation of statefor the fluid. Get Unlimited Access
Implements Tribology::Lubricant class, along with Ubbelohde-Walther equation, ASTM D2270 viscositytribologyviscosity-temperature-chartsviscosity-calculationlubricantsviscosity-indexastmd2270astmd341ubbelohde-walther UpdatedDec 15, 2017 Perl Load more…
absolute viscosity of a substance is divided by its density. Kinematic viscosity is represented by the Greek letter nu, which resembles a "v;" absolute viscosity is represented by mu, which resembles a "u;" and density is represented by rho, which resembles a "p." The equation, ...
The influence of temperature and composition on the viscosity of high-purity liquid metals and alloys of the Pb-Sn and Sb-Cd systems was investigated by the logarithmic-decrement method. The variation of viscosity with temperature above the liquidus followed the equation: η = Ae E/RT . No la...
aThe Walther equation has been shown to accurately capture viscosity versus temperature data for typical mineral oil and synthetic lubricants. It also forms the basis for the American Society for Testing and Materials (ASTM) viscosity-temperature chart (ASTM D341), which is quite successful in ...
(P) and the related dynamic properties, such as the primary relaxation time τ (P), in soft-matter systems as well as the modified Simon–Glatzel-type equation for describing pressure dependences of the glass temperature T g (P), the melting temperature T m (P) and the fragile-to-strong...
This equation is called the viscosity law of Newton. The velocity gradient, du/dy, is also often called the shear rate. As mentioned earlier, for equal pressure and temperature, the viscosity is constant. This means that Newtonian fluids do not have a memory for deformation in the past. 10....
The density was measured up to 60 MPa with a resonance densimeter and extrapolated with a Tait-type relationship up to 100 MPa. The accuracy of the reported densities is better than 1 kg m 展开 关键词: computer simulation kinematic equation quaternion rigid-body dynamics DOI: 10.1068/htjr...