A fluid, which is incompressible and having no viscosity, is known as an ideal fluid. Ideal fluid is only an imaginary fluid as all the fluids, which exist, have some viscosity. AOD pumps are particularly employed where power is not obtainable, otherwise in unstable and combustible regions. Fluid mechanics is sometimes also known as fluid dynamics. A fluid, in which shear stress is more than the yield value and shear stress is proportional to the rate of shear strain or velocity gradient, is known as ideal plastic fluid. A real fluid, in which shear stress in directly proportional to the rate of shear strain or velocity gradient, is known as a Newtonian fluid. Fluid Mechanics ; CLASSIFICATION OF FLUIDS Participate in Online Conference. It deals with flow of fluids over aircraft, rockets or automobiles at high or low speeds. Great article, though! Positive Displacement pumps can further be classified under subcategories according to the motion pattern of the enclosed volume forming parts. × Hydraulics Fluid mechanics deals with the behavior of fluids which are either stationary or in motion. You can post now and register later. Broad categories based on Flow Pattern: Intermittent - Positive Displacement Pumps Continuous - Roto-Dynamic or Turbo Pumps The construction of the positive displacement pumps is such that the moving parts along with the fixed ones inside it can form moving enclosed volumes. Mechanics can be further divided into two parts, It deals with flow of fluids over aircraft, rockets or. Graphical representation of different fluids: CLASSIFICATION OF FLOWS ON THE BASIS OF MACH NUMBER. Diaphragm pumps also known as AOD pumps (Air operated diaphragms), pneumatic, and AODD pumps. × CLASSIFICATION OF FLUIDS (1 review) By saurabhjain (edited) April 29, 2017; Share Followers 0. HVAC: Heating, Ventilation & Air-Conditioning, Fluid Mechanics & How it Relates to Mechanical Engineering, This post is part of the series: Fluid Pumps, The Basic Concept, Construction, and Working Principle of Hydraulic Pumps, Types of Reciprocating Positive Displacement Pumps: Piston Pump, Types of Reciprocating Positive Displacement Pumps: Diaphragm Pump, Commercial Energy Usage: Learn about Emission Levels of Commercial Buildings, Time to Upgrade Your HVAC? Required fields are marked *. Constant Pressure Pumps. If you have an account, sign in now to post with your account. Different variants of positive displacement pumps reciprocating pump are single discharge, double discharge, duplex and triplex. Statics deals with the bodies which are at rest. To sum up the classification criterion: Positive displacement, as the name suggests, is displacing something positively, that is, certain fixed quantity is displaced. Clear editor. Your link has been automatically embedded. The energy transferred from the Pump to the fluid appears as the pressure and velocity of the fluid. A fluid, in which the density of fluid changes while change in external force or pressure, is known as compressible fluid. Lobe pumps contains two elastomer-coated rotors that are driven by an integral gear box and... Screw Pumps. Positive displacement of a fluid is that a closed volume of the fluid is moved from one part of the machine to the other part. Rotating positive displacement pumps have rotating parts which form the moving cavity for carrying the fluid from one side and discharging it at the supply side. Notify me of follow-up comments by email. By This site uses Akismet to reduce spam. Compressible subsonic flow-M between 0.3 and 1, Transonic flow-M ranging between values less than 1 and more than 1, Supersonic flow-M greater than 1 but less than 5. Types Of Pumps. It is the study of fluid motion when the fluid flow is approximated as in-compressible. A real fluid, in which shear stress in not directly proportional to the rate of shear strain or velocity gradient, is known as a Non Newtonian fluid. Roto-Dynamic or Turbo Pumps are similar in construction as the Hydraulic Turbines just the functioning is opposite to them. Each type of these reciprocating pumps is available with various different features. Below are some application areas of fluid mechanics (or fluid dynamics), Classification: By ME420PSU – PowerpointPreviously published: no, CC BY-SA 3.0, https://en.wikipedia.org/w/index.php?curid=46477726, Your email address will not be published. All the fluids, in actual practice, are real fluids. You cannot paste images directly. The applications of these pumps mainly include in continuous applications like in general plants, industrial and mining. It is a sub category of hydrodynamics which deals with the flow of liquid through pipes and channels. All liquid are considered in this category. Mechanics is a physical science which deals with the bodies which are either moving or stationary, under the influence of some external force. Fluids statistics is taken as a special case (of fluid dynamics) where velocity of flow is zero. Turbo Pumps has rotating impellers with blades or vanes fixed to a rotating shaft. Screw Pumps and Gear Pumps are most common Rotary Positive Displacement Pumps. Screw pumps are a special type of rotary positive displacement pump in which the flow through the pumping... Progressive Cavity Pumps. Each of these two types of Rotary Positive Displacement Pump has pumps available with different design features. Fluid dynamics can further be divided into several categories, Thermodynamic System and Surrounding | Boundary | Types. All Rights Reserved. saurabhjain The fluid used can be either a gas or a liquid. Your email address will not be published. 7 Operating Principles of Turbomachines The coming articles on fluid pumps will provide information about each type of pumps their construction, working and different features. Rotary positive displacement pumps are of mainly two types based on the number of rotors. There are also other important classifications based on the power rating range and fluid discharge rate. It is the study of fluid motion when the fluid flow is approximated as in-compressible. Fluid mechanics is a sub category of mechanics. 2. Water Desalination Using Multi-stage Flash Distillation (MSF), Reverse Osmosis vs. Multi Stage Flash Distillation: A Comparison Between Different Desalination Methods. Fluid Pump or Hydraulic Pump is a machine which transfers the energy from its moving parts to the fluid passing through the machine. Copyright © 2020 Bright Hub PM. Display as a link instead, × Dynamics deals with the bodies which are in motion. The most basic classification criterion for differentiating the pumps, whether it is for purpose of analysis or for commercial purpose, is the fluid flow pattern. These classifications of the pumps does not end here, these two broad categories have further different types of pumps having varying characteristics. There are two basic categories of pumps: 1. They open on one side, take the fluid, enclose it and open on the other side, discharging the fluid.
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