Explore viscosity index. Learn the definition of viscosity index and understand its formula. Discover the significance of the viscosity index for a...
3.4 Take the average value of two measurements and calculate it according to the formula to obtain the dynamic viscosity of the test product. 4. Record and calculation 4.1 Record the model of the rotary viscometer, the rotor number and speed used, the viscometer constant ((K ‘value), the ...
This standard provides the specification, instructions, calibration procedures and basic calculation formulae for glass capillary viscometer widely used for determination of kinematic viscosity. It covers Ostwald viscometer, suspended level viscometer, and reverse-flow viscometer. Similar to capillary viscometer...
The objective is to take the effect of local temperature and local shear stress on the liquid viscosity into account by coupling the solution of the temperature distribution with the fluid field calculation with a model. 5.3.5.2 Temperature and shear rate models for liquid viscosity 5.3.5.2.1 V...
An analysis is made of a method of calculating wind-driven currents with a finite bottom velocity determined on the basis of Chaizy's formula. Using Millionshchikov's methodologies approach, a dependence is obtained for a turbulent viscosity which varies with depth. Averaging this viscosity makes...
The appropriate calculation formula is used to accurately predict the non-Newtonian fluid. The measurement is used for the research and analysis of rheological parameters of on-site drilling fluid. At the same time, a series of technical parameters such as dynamic and static shear...
Based on the above, a new type of approximate formula for computing hydraulic force of the distributor is presented according to the conclusion of numerical calculation in the case of varying oil viscosity, which is determined by oil pressure and oil temperature. 指出了轴向柱塞泵和曲轴连杆液压电...
Standard test method for dynamic viscosity and density of liquids by stabinger viscometer (and the calculation of kinematic viscosity). ASTM International West Conshohocken (ed), PA 23. A. International (2001) ASTM D1331-14. standard test methods for surface and interfacial tension of solutions ...
After measuring the flow times of all PET samples at 25 and 30°C using the ASTM D 4603 and ASTM D 2857 methods and calculation of intrinsic viscosity, it is possible to use these data to obtain the Schulz–Blaschke constant (KSB). It is possible to calculate KSB at 25 and 30°C usi...
In order to improve the model a theoretical calculation of the hydrostatic pressure in the pocket should be developed. Lo and Wilson (1999) have developed a theoretical model calculating the hydrostatic pressure in the trapped lubricant by an upper bound analysis. Another approach based on a plasti...