Vogel E., Küchenmeister C., Bich E., Laesecke A. Viscosity-Effects of Temperature and Pressure. Then, the blend viscosity is calculated as, (2) where A12 is the average viscosity blending index, (3) Kendall-Monroe equation calculates the blend viscosity as the cubic-root. A Technical Publication Devoted to the Selection, Use of Lubricants. introducing the so-called viscosity blending index (ASTM D7152), (1) where xi is the weight fraction, i is the kinematic viscosity of the ith component in the blend. Wiki ASTM D2270 / Viscosity index (VI) from 40C and 100C ASTM D2270 / Viscosity Index (VI) from 40C and 100C Standard practice for calculating viscosity index from kinematic viscosity at 40 and 100C Calculator for viscosity index (VI) according to ASTM D2270 and ISO 2909. International Critical Tables of Numerical Data, Physics, Chemistry and Technology, McGraw-Hill for The National Research Council. A Technical Publication Devoted to the Selection and Use of Lubricants, A New Chart for Viscosity Temperature Relations. Roelands, Correlational aspects of the viscosity–temperature–pressure relationship of lubricating oils, PhD Thesis, Delft University of Technology, Netherlands (1966) Discussion Lubrication Lubricants, Institution of Mechanical engineering 2 (1937) 217Ĭrouch R.F., Cameron A. For many fluids the tangential, or shearing, stress that causes flow is directly proportional to the rate. It controls the liquid flow in such processes as spraying, injection molding, and surface coating. Division of Refining, American Petroleum Institute (1932) 56–58 Viscosity is a major factor in determining the forces that must be overcome when fluids are used in lubrication and transported in pipelines. Standard viscosity–temperature charts for liquid petroleum products.
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