Download or read book Investigation of Flow Behavior Inside Ejector Pumps Using Finite Difference Technique written by Xiaowan Shan and published by . This book was released on 2012 with total page 113 pages. Available in PDF, EPUB and Kindle. Book excerpt: A complete numerical model has been developed to characterize the performance under different flow conditions. Finite Difference-based method was used to analyze and simulate flow behavior inside ejector pumps for both single phase and dual-phase fluid flow. Single phase model of ejector pump only has one fluid as inputs and its performance is well understood. The behavior of a single phase flow inside ejector pumps have been investigated both analytically and experimentally. Dual phase flow got very few attentions from past researchers. The present work addresses these problems numerically using Finite Difference Technique. Both single and dual phase flow are investigated for comparison. Finally experimental verification of the developed numerical methods is done on an experimental rig developed at our systems Engineering Laboratory. The tests will under different input pressures in order to characterize ejector pump performance. Results obtained numerically for single phase model have been compared with experimental data obtained in separate study at MU. The predicted pressure distribution within the ejector pump and performance curves matches the experimentally observed ones. Results obtained numerically for dual phase model were effectively used for prediction of energy, pressure and velocity changes through the ejector.

Download or read book An Integrated Modeling Approach for Design and Optimization of Ejector Pumps Carrying Two phase Fluid written by Khalid Sarhan Almutairi and published by . This book was released on 2017 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt: An ejector pump uses a primary flow as a motive fluid to entrain another fluid, and can work with both incompressible flow and compressible flow, in either as a singlephase or two-phase mixture. Determining the behavior of the two-phase flow inside the ejector with different geometric parameters was the objective of this research. Three approaches were used to predict the performance and the capture the flow behavior inside it. An analytical model used the geometric parameters to calculate the loss factors for the first time and work as a basis for the two-phase flow ejectors. A fluid transportation system was built to verify analytical and numerical predictions and to explore optimum. Using a fitting parameter to capture the flow behavior inside the ejector was crucial for the accuracy of the numerical model. The fitting parameter is a new technique that uses an arbitrary fluid to match the induced air measurements numerically with the ones founded experimentally. To apply the three approaches, nine ejectors were built with different geometric parameters. The nozzle exit diameters are tested at three levels while the length mixing tube are tested at three levels as well. The results reveal that the diffuser angle of 5°, the smallest nozzle exit diameter, and the longest mixing tube result on maximum efficiency and highest induced air. More investigation of two-phase ejectors is important to fully understand flow behavior and to increase efficiency. There are many improvements needed to this work in future.

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1991 with total page 486 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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Download or read book A Selected Listing of NASA Scientific and Technical Reports for written by United States. National Aeronautics and Space Administration. Scientific and Technical Information Division and published by . This book was released on 1966 with total page 2088 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Selected Listing of NASA Scientific and Technical Reports for 1966 written by United States. National Aeronautics and Space Administration. Scientific and Technical Information Division and published by . This book was released on 1967 with total page 2084 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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Download or read book Design of Multiphase Reactors written by Vishwas G. Pangarkar and published by John Wiley & Sons. This book was released on 2015-01-27 with total page 532 pages. Available in PDF, EPUB and Kindle. Book excerpt: Details simple design methods for multiphase reactors in the chemical process industries Includes basic aspects of transport in multiphase reactors and the importance of relatively reliable and simple procedures for predicting mass transfer parameters Details of design and scale up aspects of several important types of multiphase reactors Examples illustrated through design methodologies presenting different reactors for reactions that are industrially important Includes simple spreadsheet packages rather than complex algorithms / programs or computational aid

Download or read book ERDA Energy Research Abstracts written by United States. Energy Research and Development Administration and published by . This book was released on with total page 592 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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