In an axial flow pump, the impeller pushes the liquid in a direction parallel to the pump shaft. Axial flow compressor design, inter spool duct lecture 16 design of compressor blades, aerofoil design subsonic, transonic, supersonic profiles. Simplified meridional flow analysis for axial turbomachines 6. This differs from other rotating compressors such as centrifugal compressor, axicentrifugal compressors and mixed flow compressors where the fluid flow will include a. Introduction to fluid machinery turbines, pumps, blowers and compressors fluid machines machines are energy conversion devices are called turbomachinery which transfers energy between a fluid system and its mechanical system e. Vtu nptel nmeict project progress report the project on development of remaining three quadrants to nptel phasei under grant in aid nmeict, mhrd, new delhi. Mod01 lec01 introduction to turbo machines syllabus.
Aerothermodynamics of flow thru axial flow compressor. An axial flow compressor stage is designed to give free vortex tangential velocity distributions for all radii before and after the rotor blade row. Compressor is a device which is used to increase the pressure of air from. K gate gk international days gk awards gk basic national gk basic world gk biology gk chemistry gk computer gk electrics gk. In an axial flow turbine, the flow enters and leaves in the axial direction. Surge is a characteristic behaviour of a centrifugal compressor that can occur when inlet flow is reduced such that the head developed by the compressor is insufficient to overcome the pressure at the discharge of the compressor. Axial flow compressors usually consists of a series of stages. Vorticity production in turbomachines and its influence upon meridional flows. This note will be useful for students wishing to gain an overview of the vast field of fluid dynamics. Introduction a simple two dimensional analytical model 2d losses in axial flow compressor stage profile loss and blade performance estimation 3d flows in blade passages secondary flows, tip leakage flow, scrubbing simple three dimensional flow analysis full radial equilibrium equation free vortex and.
In many cases, a properly designed heat recovery unit can recover anywhere from 50 to 90 percent of this available thermal energy and put it to useful work heating air or water. The centrifugal pump the centrifugal pump,dimensionless parameters and similarity laws, axial flow and mixed flow pumps, fans, turbines, compressible. Axial flow compressors are more suitable for larger engines in. The function of all of them is to draw in air from the atmosphere and produce air at pressures substantially higher. Each stage comprises of a row of rotor blades followed by a row of stator blades. Pdf control concepts for centrifugal compressor applications. Users manual for updated computer code for axialflow. Compressible axial flow, mixed flow, radial flow geometry.
Likewise, as is always positive, so the static pressure increases from root to tip. Users manual for updated computer code for axialflow compressor conceptual design arthurj. Usually a storage vessel or receiver is used with the. The centrifugal pump the centrifugal pump,dimensionless parameters and similarity laws, axial flow and mixed flow pumps, fans, turbines, compressible flow and turbomachines. Download fluid mechanics by nptel download free online book chm pdf. Singlemultistage characteristics lecture 17 tutes3. Applications of viscous flows through pipes and compressible flow. And axial flow compression, like a centrifugal compressor also consists of a rotor and a stator.
Lecture 4 2d losses in axial flow compressor stage lecture 5 tutorial 1 lecture 6 3d flows in blade passages, secondary flows, tip leakage flow, scrubbling. Nptel video lecture topic list created by linuxpert. The continuum hypothesis, kinematics, conservation laws. It is the volume of air delivered by compressor under the compressor. In a reciprocating compressor, a volume of air is drawn into a cylinder, it is trapped, and compressed by piston and then discharged into the discharge line. The fluid maintains a significant axialflow direction. Application of the energy equation between the two free surfaces, points 1 and 2. Axial flow increase total pressure permits non cavitating operation in impeller. Download lecture notes for fluid mechanics i download free online book chm pdf. Book download link provided by engineering study material esm. There may be significant radialand axial flow velocity components for the flow through the rotor row. Coordinate system for axial flow compressor figure 5 shows the pressure, velocity, and total temperature variation for. Som,department of mechanical engineering,iit kharagpur.
Energy transfer in turbomachines, gas and steam turbines, and hydraulic turbines. Department of mechanical engineering rajagiri school of. Nptel video lecture topic list created by linuxpert systems, chennai. Download axial and centrifugal compressor mean line flow analysis. Compressors, gas turbines and jet engines mcq practice. A centrifugal compressor was incorporated in the whittle turbojet engine. Civil quiz ebook electrical interview electrical lab electrical mcq electrical mock test electrical quiz engg mechanics notes free books g.
The axial flow compressor is widely used in aircraft engines. Performance analysis of multi stage axial flow compressors 1 performance analysis of multi stage axial flow compressors p m v subbarao professor mechanical engineering department. In addition to its inherent advantage of high mass flow per frontal area, it can exhibit very good aerodynamic performance. Turton the text is based on a course on turbomachinery which the author has taught since year 2000 as a technical elective. Download turbomachinery design and theory by rama s.
Compressors, fans, and blowers are devices which are designed in such a way that they deliver gas at a pressure which is more than the genuinely existing pressure. Axial flow turbine kaplan constructional features velocity triangles work done and. It is a rotating, airfoilbased compressor in which the gas or working fluid principally flows parallel to the axis of rotation, or axially. Generally, maximum pressure ratio achieved in a stage of axial compressor is about 1. Aerospace engineering turbomachinery aerodynamics nptel. Pdf comparative performance evaluation of a multistage. Axial and centrifugal compressor mean line flow analysis. Fundamentals of fluid mechanics chapter 12 pumps and. Introduction to fluid machinery turbines, pumps, blowers. The level is kept as such that students can smoothly move from a study of the most successful books in thermodynamics, fluid dynamics, and heat transfer to the subject of turbomachinery. Download as ppt, pdf, txt or read online from scribd. Introduction to fluid machines and compressible flow by prof.
Introduction a simple two dimensional analytical model 2d losses in axial flow compressor stage profile loss and blade performance estimation 3d flows in blade passages secondary flows, tip leakage flow, scrubbing simple three dimensional flow analysis full radial equilibrium equation free. Performance analysis of multi stage axial flow compressors. The impeller of a typical axial flow pump and the flow through a radial flow pump are shown in figure 7. A read is counted each time someone views a publication summary such as the title, abstract, and list of authors, clicks on a figure, or views or downloads the fulltext. An axial compressor is a gas compressor that can continuously pressurize gases. All books are in clear copy here, and all files are secure so dont worry about it. Nptel video lecture topics for mechanical engineering new no. Axial flow pumps are sometimes called propeller pumps because they operate essentially the same as the propeller of a boat. New material on wind turbines, and threedimensional effects in axial turbomachines is included. The cylinder valves control the flow of air through the. The axial flow turbine, like its counterpart the axial flow compressor, is the most common type of turbine used in large gas turbines. The features like a rise in pressure, working pressure, mechanical design and specific speed become the basis for the classification and differentiation. Basic principles and energy transfer in axial flow compressor nptel.
Lecture 1 introduction to turbo machines syllabus, references and schedules lecture 2 axial flow compressors and fans. Read online axial and centrifugal compressor mean line flow analysis. Lecture series on steam and gas power systems by prof. Nonpositive displacement compressor may be of axial flow type or centrifugal type depending upon type of flow in compressor. Performance analysis for axial compressors and fans 5. A m pradeep, department of aerospace engineering, iit bombay. The flow across the blads involves a substantial radial flow component at the rotor inlet, exit, or both. The cylinder valves control the flow of air through the cylinder. Govindaraju,tg sitharaman, applied elasticity for engineers, nptel.
1137 155 36 1358 471 1102 167 139 446 841 902 1467 964 316 12 807 266 1070 349 1328 1136 1231 1393 1022 775 887 584 953 758 1550 760 161 790 1357 411 191 181 210 345 494 841 1159 365 767 643 961 1105 358