Includes bibliographic references.
|Statement||Edited by Milton H. Aronson and Robert C. Nelson.|
|Contributions||Nelson, Robert C., joint ed.|
|LC Classifications||QC189 .A7|
|The Physical Object|
|Pagination||ii, 134 p.|
|Number of Pages||134|
|LC Control Number||64005225|
The deﬁnition of viscosity by Equation is valid only for laminar (i.e., layered or sheet-like) or streamline ﬂow as depicted in Figure , and it refers to the molecular viscosity or intrinsic viscosity. The molecular viscosity is a property of the material that depends microscopically on bond strengths,File Size: KB. Viscosity measurement Viscosity is measured with various types of viscometers and rheometers. A rheometer is used for those fluids which cannot be defined by a single value of viscosity and therefore require more parameters to be set and measured than is the case for a viscometer. Close temperature control of the fluid is essential to accurate File Size: 2MB. Online Viscosity Monitoring ViscoPro The PAC ViscoPro is the next generation viscometer for the process industries. By incorporating the oscillating piston method, which is an industry-proven sensor technology, the ViscoPro is the best choice for applications requiring fast, real-time analysis with reliable data that correlates tightly with laboratory results. In all viscosity measurements it is essential that the temperature be closely controlled. The temperature at which viscosity measurements are taken should be stated with all viscosity data because the data are meaningless unless the temperature is known. It is assumed that close temperature control is an essential feature of each system.
The criticality of kinematic viscosity measurement prompted the petroleum industry to develop a very precise method, first published in , ASTM D , Test Method for Kinematic Viscosity of Transparent and Opaque Liquids. The term “kinematic” simply means that the measurement is made while fluid is flowing under the force of gravity. What is Viscosity? Viscosity is the measure of a substance's resistance to motion under an applied force. The formula for measuring viscosity is fairly simple: viscosity = shear stress / shear rate. The result is typically expressed in centipoise (cP), which is the equivalent of 1 mPa s (millipascal second). The book then examines the practice of objective texture measurement and viscosity and consistency, including the general equation for viscosity, methods for measuring viscosity, factors affecting viscosity, tensile testers, distance measuring measurements, and shear testing. One of the c o-authors, Professor Viswanath, co-authored a book jointly with Dr. Natarajan “Data Book on the Viscosity of Liquids” in which mainly presented collected and evaluated liquid viscosity data from the literature.
VISCOSITY FOR EVERYONE Our mission is to take viscosity measurement from the lab to the places it’s needed most – on the line, in the field, at the site. And where the lab is still a feature, to radically alter the way fluids are tested and transform the throughput speed. This manifesto is . Mud Viscosity: Viscosity is defined as the resistance of a fluid to flow and is measured as the ratio of the shearing stress to the rate of shearing strain. Two types of fluid characterizations are: 1. Newtonian (true fluids) where the ratio of shear stress to shear rate or viscosity is constant, e.g. water, light oils, etc. and 2. The viscosity of a liquid (see Viscosity) is measured using a viscometer, and the best viscometers are those which are able to create and control simple flow most widely measured viscosity is the shear viscosity, and here we will concentrate on its measurement, although it should be noted that various extensional viscosities can also be defined and attempts can be made to measure. Scientifically, viscosity is a liquid or gas’ tendency to resist by internal friction, the relative motion of its molecules and hence any change of shape, the magnitude of this, as measured by the force per unit, area resisting a flow in which parallel layers unit distance apart have unit speed relative to one another, also called absolute or Author: Fungilab.