Download or read book Inverse Design of Centrifugal Impellers by Simultaneous Modification of Blade Shape and Meridional Contour written by H. Passrucker and published by . This book was released on 2000 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Design and Analysis of Centrifugal Compressors written by Rene Van den Braembussche and published by John Wiley & Sons. This book was released on 2019-01-14 with total page 609 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comprehensive overview of fluid dynamic models and experimental results that can help solve problems in centrifugal compressors and modern techniques for a more efficient aerodynamic design. Design and Analysis of Centrifugal Compressors isacomprehensive overview of the theoretical fluid dynamic models describing the flow in centrifugal compressors and the modern techniques for the design of more efficient centrifugal compressors. The author — a noted expert in the field, with over 40 years of experience — evaluates relevant numerical and analytical prediction models for centrifugal compressors with special attention to their accuracy and limitations. Relevant knowledge from the last century is linked with new insights obtained from modern CFD. Emphasis is to link the flow structure, performance and stability to the geometry of the different compressor components. Design and Analysis of Centrifugal Compressors is an accessible resource that combines theory with experimental data and previous research with recent developments in computational design and optimization. This important resource Covers the basic information concerning fluid dynamics that are specific for centrifugal compressors and clarifies the differences with axial compressors Provides an overview of performance prediction models previously developed in combination with extra results from research conducted by the author Describes helpful numerical and analytical models for the flow in the different components in relation to flow stability, operating range and performance Includes the fundamental information for the aerodynamic design of more efficient centrifugal compressors Explains the use of computational fluid dynamics (CFD) for the design and analysis of centrifugal compressors Written for engineers, researchers and designers in industry as well as for academics specializing in the field, Design and Analysis of Centrifugal Compressors offers an up to date overview of the information needed for the design of more effective centrifugal compressors.
Download or read book Inclusion of Blockage Effects in Inverse Design of Centrifugal Pump Impeller Blades written by Rahul Singh and published by . This book was released on 2015 with total page 93 pages. Available in PDF, EPUB and Kindle. Book excerpt: The design and analysis of turbo-machinery are complex tasks due to the complexity of the geometry and the flow physics. The application of various computational tools to evaluate the performance of a specified geometry is commonly designated as a direct method. In a direct design approach designer's experience and talent are vital factors to reduce the number of trials while in an inverse design approach designer needs to prescribe the performance function as an input. It is often desirable to apply the inverse design approach, in which performance parameters are prescribed in the form of performance functions, the so called loading distribution, to obtain the corresponding geometry of pump as the result. At the start of an inverse design technique, the desired performance functions are prescribed as input quantities, and an initial, guessed shape of the impeller blade geometry is changed iteratively to arrive at the converged shape. The present study has developed a procedure for inverse design of a two-dimensional centrifugal pump impeller blades using the computational fluid dynamics (CFD) software, OpenFOAM (an open-source CFD software) and FLUENT. In the current work, the Gambit software is used for geometry development, domain decomposition, and grid generation. In this thesis, OpenFOAM is used to solve for the in-viscid flow in the passage formed by two adjacent blades of a pump. FLUENT is used to solve full Navier-Stokes equations to calculate blockage factor distribution along the meridional plane. The evolving blade shapes are computed by using flow tangency condition; the viscous effects in the mean flow are introduced indirectly by using the blockage effects from viscous simulations. Polynomial curve fitting techniques is used to generate the loading distribution of circulation. During each step of the current inverse design technique, the flow field analysis and blade shape calculations are performed alternately, while satisfying the boundary condition based on the loading distribution function at each step, until a fully converged solution is achieved. All the steps involved in the technique are automated by linking the individual codes in a Linux shell script. The blade shape and flow domain changes with each iteration, which means the grid also changes with each iteration. It is very time consuming to generate grid manually at each iteration, so a journal file is written in Gambit, which is executed automatically with each iteration and generates a mesh. The generated mesh is imported in OpenFOAM, where the flow analysis is done using the laplacianFOAM module of OpenFOAM, using boundary conditions based on the prescribed performance function. The tentative performance function is obtained using the circulation distribution, which is accommodated by modifying the laplacianFOAM solver. The viscous flow is solved between passages of two consecutive blades of the impeller to find the blockage factor distribution, using FLUENT. The current inverse design process is verified for a logarithmic spiral blade. Thus, the current work gives a good approach of incorporating blockage via viscous effects in the mean flow for an impeller geometry using OpenFOAM and FLUENT.
Download or read book ASME Technical Papers written by and published by . This book was released on 2000 with total page 504 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Paper written by and published by . This book was released on 2000 with total page 498 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book 4th European Conference on Turbomachinery written by Gerard Bois and published by S.G.E.. This book was released on 2001 with total page 1100 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Design Fabrication and Performance of Wind Turbines 2020 written by Kyung Chun Kim and published by MDPI. This book was released on 2021-03-04 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Special Issue is a collection of twelve papers on the design and application of biomedical circuits and systems. We hope you enjoy reading this Special Issue and become inspired to address technological challenges toward helping the medical industry and biologists to increase the quality of life for humans, which is the main objective. Several topics have been highlighted: muscle electrostimulation, analog front-end (AFE) circuits, waveform generators, real-time velocimetry estimators, interference suppression, bio-signal encryption, IoT electronic nose, ultrasound image processing, noise in medical imaging, elbow actuators, and aids for visually impaired people. We are conscious about the very wide scope of biomedical circuits and systems applications, and that our contribution represents only a grain of sand, though we expect to be useful in contributing to the progress of knowledge in the field.
Download or read book Proceedings of the ASME Turbo Expo 2002 written by and published by . This book was released on 2002 with total page 594 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Inverse design and Optimization Methods for Centrifugal Pump Impellers written by Remko Willem Westra and published by . This book was released on 2008 with total page 173 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Challenges and Goals in Industrial and Pipeline Compressors written by Abraham Engeda and published by . This book was released on 2000 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Radial Flow Turbocompressors written by Michael Casey and published by Cambridge University Press. This book was released on 2021-06-10 with total page 789 pages. Available in PDF, EPUB and Kindle. Book excerpt: An introduction to the theory and engineering practice that underpins the component design and analysis of radial flow turbocompressors. Drawing upon an extensive theoretical background and years of practical experience, the authors provide descriptions of applications, concepts, component design, analysis tools, performance maps, flow stability, and structural integrity, with illustrative examples. Features wide coverage of all types of radial compressor over many applications unified by the consistent use of dimensional analysis. Discusses the methods needed to analyse the performance, flow, and mechanical integrity that underpin the design of efficient centrifugal compressors with good flow range and stability. Includes explanation of the design of all radial compressor components, including inlet guide vanes, impellers, diffusers, volutes, return channels, de-swirl vanes and side-streams. Suitable as a reference for advanced students of turbomachinery, and a perfect tool for practising mechanical and aerospace engineers already within the field and those just entering it.
Download or read book Centrifugal Compressors written by Ronald H. Aungier and published by American Society of Mechanical Engineers. This book was released on 2000 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt: A mechanical engineer with a Pennsylvania turbomachinery company, A ungier describes his own system and strategy for designing and analyzing centrifugal compressor aerodynamics. To address the novice as well as the experienced in the field, he presents the basic thermodynamic and fluid dynamic principles, empirical models, and key numerical methods that form the basis of his methods. His strategy, or design practice, he found harder to describe because it involves a process of reasoning rather than following an established set of principles. He recognizes that his is only one of many possible methods, but makes no effort to compare or contrast his with any other.
Download or read book Centrifugal Pumps written by Val S. Lobanoff and published by Elsevier. This book was released on 2013-10-22 with total page 592 pages. Available in PDF, EPUB and Kindle. Book excerpt: Centrifugal Pumps: Design and Application, Second Edition focuses on the design of chemical pumps, composite materials, manufacturing techniques employed in nonmetallic pump applications, mechanical seals, and hydraulic design. The publication first offers information on the elements of pump design, specific speed and modeling laws, and impeller design. Discussions focus on shape of head capacity curve, pump speed, viscosity, specific gravity, correction for impeller trim, model law, and design suggestions. The book then takes a look at general pump design, volute design, and design of multi-stage casing. The manuscript examines double-suction pumps and side-suction design, net positive suction head, and vertical pumps. Topics include configurations, design features, pump vibration, effect of viscosity, suction piping, high speed pumps, and side suction and suction nozzle layout. The publication also ponders on high speed pumps, double-case pumps, hydraulic power recovery turbines, and shaft design and axial thrust. The book is a valuable source of data for pump designers, students, and rotating equipment engineers.
Download or read book Centrifugal Pumps written by Johann Friedrich Gülich and published by Springer. This book was released on 2014-10-24 with total page 1146 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book gives an unparalleled, up-to-date, in-depth treatment of all kinds of flow phenomena encountered in centrifugal pumps including the complex interactions of fluid flow with vibrations and wear of materials. The scope includes all aspects of hydraulic design, 3D-flow phenomena and partload operation, cavitation, numerical flow calculations, hydraulic forces, pressure pulsations, noise, pump vibrations (notably bearing housing vibration diagnostics and remedies), pipe vibrations, pump characteristics and pump operation, design of intake structures, the effects of highly viscous flows, pumping of gas-liquid mixtures, hydraulic transport of solids, fatigue damage to impellers or diffusers, material selection under the aspects of fatigue, corrosion, erosion-corrosion or hydro-abrasive wear, pump selection, and hydraulic quality criteria. As a novelty, the 3rd ed. brings a fully analytical design method for radial impellers, which eliminates the arbitrary choices inherent to former design procedures. The discussions of vibrations, noise, unsteady flow phenomena, stability, hydraulic excitation forces and cavitation have been significantly enhanced. To ease the use of the information, the methods and procedures for the various calculations and failure diagnostics discussed in the text are gathered in about 150 pages of tables which may be considered as almost unique in the open literature. The text focuses on practical application in the industry and is free of mathematical or theoretical ballast. In order to find viable solutions in practice, the physical mechanisms involved should be thoroughly understood. The book is focused on fostering this understanding which will benefit the pump engineer in industry as well as academia and students.
Download or read book Axial flow Compressors written by Ronald H. Aungier and published by American Society of Mechanical Engineers. This book was released on 2003 with total page 386 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a thorough description of an aerodynamic design and analysis systems for Axial-Flow Compressors. It describes the basic fluid dynamic and thermodynamic principles, empirical models and numerical methods used for the full range of procedures and analytical tools that an engineer needs for virtually any tupe of Axial-Flow Compressor, aerodynamic design or analysis activity. It reviews and evaluates several design strategies that have been recommended in the literature or which have been found to be effective. It gives a complete description of an actual working system, such that readers can implement all or part of the system. Engineers responsible for developing, maintaining of improving design and analysis systems can benefit greatly from this type of reference. The technology has become so complex and the role of computers so pervasive that about the only way this can be done today is to concentrate on a specific design and analysis system. The author provides practical methodology as well as the details needed to implement the suggested procedures.
Download or read book Turbomachinery Performance Analysis written by R. I. Lewis and published by Butterworth-Heinemann. This book was released on 1996-05-31 with total page 350 pages. Available in PDF, EPUB and Kindle. Book excerpt: This modern overview to performance analysis places aero- and fluid-dynamic treatments, such as cascade and meridional flow analyses, within the broader context of turbomachine performance analysis. For the first time ducted propellers are treated formally within the general family of turbomachines. It also presents a new approach to the use of dimensional analysis which links the overall requirements, such as flow and head, through velocity triangles to blade element loading and related fluid dynamics within a unifying framework linking all aspects of performance analysis for a wide range of turbomachine types. Computer methods are introduced in the main text and a key chapter on axial turbine performance analysis is complemented by the inclusion of 3 major computer programs on an accompanying disc. These enable the user to generate and modify design data through a graphic interface to assess visually the impact on predicted performance and are designed as a Computer Aided Learning Suite for student project work at the professional designer level.Based on the author's many years of teaching at degree level and extensive research experience, this book is a must for all students and professional engineers involved with turbomachinery.
Download or read book Modelling Fluid Flow written by János Vad and published by Springer Science & Business Media. This book was released on 2013-04-17 with total page 424 pages. Available in PDF, EPUB and Kindle. Book excerpt: Modelling Fluid Flow presents invited lectures, workshop summaries and a selection of papers from a recent international conference CMFF '03 on fluid technology. The lectures follow the current evolution and the newest challenges of the computational methods and measuring techniques related to fluid flow. The workshop summaries reflect the recent trends, open questions and unsolved problems in the mutually inspiring fields of experimental and computational fluid mechanics. The papers cover a wide range of fluids engineering, including reactive flow, chemical and process engineering, environmental fluid dynamics, turbulence modelling, numerical methods, and fluid machinery.
