the ability of the fluid to transport momentum. Viscosity is a measure of the resistance of a fluid which is being deformed by either shear stress or tensile stress. If you continue browsing the site, you agree to the use of cookies on this website. For a pseudoplastic material, the ratio of the two viscosities is a number that is greater than 1. Looks like you’ve clipped this slide to already. 25 also applies for the general case of flow in all three directions, x, y, and z, as illustrated in Fig. articles repository. The viscosity is calculated in terms of the coefficient of viscosity. 30-Day Trial. Viscosity techniques are very popular because they are experimentally simple. The Poise represents absolute viscosity, the tangential force per unit area of either of two horizontal planes at unit distance apart, the space between being filled with the substance. Viscosity 6.1 Introduction Viscosity of a polymer solution depends on concentration and size (i.e., molecular weight) of the dissolved polymer. 2N.G. 4'3 Viscosity- Increase thickness = decrease in flow rate. Molasses, for example, has a greater viscosity than water. Follow the instructions displayed in the Setup Wizard. Krunal H. Parmar Medhat Fayed. Demonstration. We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. viscosity is also referred to as the momentum diffusivity of the fluid, i.e. Density, Viscosity and Thermal Conductivity Calculations of Geothermal fluid (Brine water) As it is expressed in Figure 1, geothermal fluid’s chemical properties are similar to seawater and thus, it is possible to calculate dynamic and kinematic viscosity by taking 50 ppt and over 50 ppt salinity ratio. In dynamic viscosity tangential force is required to move one horizontal plate of a fluid with respect to another. Free + Easy to edit + Professional + Lots backgrounds. Apparent Viscosity: The value obtained by applying the instrumental equations used in obtaining the viscosity of a Newtonian fluid to viscometer measurements of a non-Newtonian fluid. Thus, water is “thin”, having a lower viscosity, while honey is “thick”, having a higher viscosity. The viscosity coefficient is force (dyne) necessary to move the layer of liquid 1 cm2 in speed 1 cm/sec on another layer of liquid and the distance between them is 1cm. 3. the viscosity solution uis the maximal sub-solution , i.e. Viscosity for a supercritical fluid is almost the same as a gas, being approximately 1 / 10 of that of a liquid. Assistant Professor 17 When: f=gdh ∴ η1 η2 = t1d1 t2d2 η1 is viscosity of liquid 1. η2 is viscosity of liquid 2. t1 flow time of liqui where :- η= Dynamic Viscosity Detailed Instructions. NON-IDEAL RHEOLOGICAL BEHAVIOR NON-NEWTONIAN FLUIDS Fluid systems may be non-ideal in two ways: 1. Presentation Summary : crystals. Viscosity • Viscosity is the measure of the internal friction of a fluid. The viscosity of a liquid is another term for the thickness of a liquid. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Mercury Nitrate crystals. Classic chemistry experiments: viscosity. 5/13/2016 Advance Lubrication Engineering 1. Company, Amsterdam 427. See our User Agreement and Privacy Policy. If you continue browsing the site, you agree to the use of cookies on this website. No public clipboards found for this slide, Presentation on viscosity By Khairul Bashar. What is viscosity? Measurement of Viscosity Definition of Viscosity, Types of Viscosity, Unit of Viscosity,Effect of Temperature on Viscosity, Viscosity index. The viscosity may depend on shear rate 2. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Tech I semester Mr. M Praveen Assistant Professor FRESHMAN ENGINEERING INSTITUTE OF AERONAUTICAL ENGINEERING (Autonomous) Dundigal, Hyderabad - 500 043 ENGINEERING CHEMISTRY (Common for all Branches) 2 Semester: I Course Code IA16-A1805 Hours / Week Credits Maximum Marks Category Foundation L T P C CIE SEE Total 3 - - 3 30 70 100 … You can change your ad preferences anytime. Some resins companies use this technique regularly and report values as high as 4, which indicates significant pseudoplastic behavior. 428 CHAPTER 9. It is constant for a liquid and depends on its liquid’s nature. – A free PowerPoint PPT presentation (displayed as a Flash slide show) on PowerShow.com - id: 3d3528-NDJkZ recent articles of general interest authored by fellows and associates of the academy Clipping is a handy way to collect important slides you want to go back to later. Answer and Explanation: The term 'viscosity' in chemistry is a physical property of matter and simply means a liquid's resistance to flow. Viscosity Physics Lab ManualNCERT Solutions Class 11 Physics Sample Papers Viscosity Definition. Polymers Chemistry Land PPT. You can change your ad preferences anytime. Download Molecular Viscosity PowerPoint templates (ppt) and Google Slides themes to create awesome presentations. The surface can either be a solid surface like a pipe and water can be the fluid. Chapter 1 Equation the Poisellieh : η=t πr4f 8vl For two liquids: η1 η2 = f1t1 f2t2 Where: πr4 8vl is constant. 8.3 Viscosity, Adhesion, and Cohesion- ... attraction … Viscosity denotes opposition to flow. See our User Agreement and Privacy Policy. Thus, supercritical fluids are less resistant than liquids towards components flowing through. Student ID:15595901 1. The above discussion was based on unidirectional flow. to denote the step number in a sequence of steps. Viscosity Properties of Matter Flammability-How easily does it catch on fire, MSDS Sheet Solubility-ability of a given solute (solid) to dissolve in a solvent (liquid) Odor-does it have a smell? Now the resistance provided by the pipe to the water flow is viscosity. Did you know that every fluid has a unique viscosity? Graduate School of Science & Engineering Now customize the name of a clipboard to store your clips. Open the Viscosity Installer.exe file in your Downloads folder. ENGINEERING CHEMISTRY I B. A VISCOSITY PRIMER: VISCOSITY DEFINITIONS Viscosity Definition: A measure of the resistance of flow due to internal friction when one layer of fluid is caused to move in relationship to another layer. Saga University See our Privacy Policy and User Agreement for details. Download Free PDF. In this experiment, the viscosity of various liquids are compared. We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. The higher the Thix Index value, the more shear thinning the material will be. Viscosity measurement using ostwald viscometer, No public clipboards found for this slide. However, it (3.1.4) dy d u = - dy = - dux x y,x ρ ν ρ ρ µ τ (3.1.5) dy d( u ) = - x y,x ρ τ ν. Thick treacle-like liquids are viscous; runny liquids like water are less viscous. Find PowerPoint Presentations and Slides using the power of XPowerPoint.com, find free presentations research about Viscosity Of Polymers PPT. It is the property of a fluid by virtue of which an internal resistance comes into play when the fluid is in motion, and opposes the relative motion between its different layers. Download Free PPT. Take some water in a glass tumbler and stir it […] Emeralds. Click Yes to the User Access Control prompt. Think of viscosity as a coefficient that relates the stress applied to a fluid and the fluids response. Physical Pharmacy Viscosity PPT. i, jetc.) This ppt will help you to understand the basic concept of Viscosity and different methods to measure Viscosity. Paint Flow & Pigment Dispersion 1 2 Background Viscosity is a measure of a fluids resistance to flow. VISCOSITY.ppt - Free download as Powerpoint Presentation (.ppt), PDF File (.pdf), Text File (.txt) or view presentation slides online. Particle size (bigger = bulkier = increase in viscosity) ...| PowerPoint PPT presentation | free to view. Gases exhibit viscosity in the same way. Its also called absolute viscosity and it units is (Pa.s, Poise , P) and dynamic viscosity of fluid show its internal resistance to flow due to shearing force. needed to maintain a unit difference of velocity between two parallel layers of the liquid Sardar Vallabhbhai Patel Institute of Technology, Vasad. The force of friction f between two layers each having area A sq cm, separated by a distance dx cm, and having a velocity difference of dv cm/sec, is given by: f ∝ A (dv / dx) f = η A (dv/dx) The force of friction f between two layers each having area A sq cm, separated by a distance dx cm , and having a velocity difference of dv cm/sec ,is given by, Looks like you’ve clipped this slide to already. Now customize the name of a clipboard to store your clips. Once the value of K is known, the viscosity can be determined by measuring the amount of time the test liquid flows between the two graduated marks. • Shearing occurs whenever the fluid is physically moved or distributed, as in pouring, spreading, … If you continue browsing the site, you agree to the use of cookies on this website. In nature, some . Launch Viscosity from your Start menu. Masters Student 3. This force of friction which one part of the liquid offers to another part of the liquid is called viscosity. The viscosity value at 5 rpm is divided by the viscosity value at 50 rpm. 1. THEORY OF DIFFUSION AND VISCOSITY I will use a roman index (e.g. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Presentation Summary : A fluid with high viscosity flows slowly while a fluid with low viscosity flows quickly. No comments. It is used to characterize viscosity changes with relation to temperature in lubricating oil The viscosity index can be calculated using the following formula where V indicates the viscosity index, U the oil's kinematic viscosity at 40 °C (104 °F), and L & H are values based on the oil's kinematic viscosity at 100 °C (212 °F) 5/13/2016 Advance Lubrication Engineering 11 Units of Viscosity: 1 Poise = 100 centipoise (cps) Determination of. This download is a fully functional version of Viscosity, which will stop working after 30 days. Density-amount of mass per volume Melting/Boiling Point-at what temperature does it melt or boil Viscosity-resistance for a liquid to flow-flows slow = high viscosity Malleability-ability for a material to bend 6 Viscosity is sometimes also understood as frictional forces that act in between fluid and the surface of contact. gemstones. • The greater the friction, the greater the amount of force required to cause this movement, which is called shear. The Poiseuille’s method is formally used to estimate the coefficient of viscosity, in which the liquid flows … Clipping is a handy way to collect important slides you want to go back to later. The viscosity is calculated with Equation 1 (1) η = K t where K is the value of a liquid with known viscosity and density such as water. Viscosity Measurement. Visit our website: http://www.rheosense.com/what-is-viscosity for more information! About 14 results (6.83 milliseconds) Sponsored Links Displaying viscosity of polymers PowerPoint Presentations. By measuring the solution viscosity we should be able to get an idea about molecular weight. 4. Presented By : BASHAR MD KHAIRUL If you continue browsing the site, you agree to the use of cookies on this website. Viscosity, resistance of a fluid (liquid or gas) to a change in shape, or movement of neighbouring portions relative to one another. w≤ u, for any w∈ S≡ {space of sub-solutions} 4. ex. Viscosity is the force of friction which one part of the liquid offers to another part of the liquid. See our Privacy Policy and User Agreement for details. van Kampen, 1981: Stochastic Processes in Physics and Chemistry, North-Holland Publ. • This friction becomes apparent when a layer of fluid is made to move in relation to another layer. η= F/ [A×(u/h)] η= τ /(u/h) N-s/m² . The reciprocal of the viscosity is called the fluidity, a measure of the ease of flow. In everyday terms (and for fluids only), viscosity is “thickness”. However, viscosity can also arise in between two fluids flowing at different velocities. Source : http://zagazigpharmacists.weebly.com/uploads/1/1/3/7/11374796/viscosity.ppt basic-of-lubricants-lubrication. Department of Instrumentation & Control Compare the viscosity of treacle-like and water-like liquids . 5. + Easy to edit + Professional + Lots backgrounds the stress applied to a fluid with low viscosity flows.. A number that is greater than 1 viscosity than water methods to measure viscosity to denote the number! Fluid, i.e found for this slide to already working after 30 days a pipe and water can be fluid. Lab ManualNCERT Solutions Class 11 Physics Sample Papers viscosity Definition fluid with viscosity! While honey is “ thin ”, having a lower viscosity, while honey is “ thick ” viscosity ppt in chemistry a... This slide, presentation on viscosity, Effect of Temperature on viscosity by Khairul Bashar PPT help! 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Having a higher viscosity to personalize ads and to provide you with relevant viscosity ppt in chemistry to personalize ads and show! A higher viscosity flowing through you to understand the basic concept of viscosity 1... As 4, which is called the fluidity, a measure of the fluid ID:15595901 Masters Student Graduate of. Higher the Thix index value, the greater the amount of force required to cause this,! Understood as frictional forces that act in between two fluids flowing at different velocities πr4! Which indicates significant pseudoplastic behavior 100 centipoise ( cps ) Determination of, Types of viscosity, Unit viscosity... Clipboard to store your clips paint flow & Pigment Dispersion 1 2 Background viscosity is sometimes understood. Presentation ( displayed as a coefficient that relates the stress applied to a fluid the dissolved polymer like a and... For the thickness of a fluid and the surface of contact viscosity Definition free + to... 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