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Multi D Cfd Modeling Of A Free Piston Stirling Convertor At Nasa Glenn
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Author :National Aeronautics and Space Administration (NASA) Publisher :Createspace Independent Publishing Platform ISBN 13 :9781721679232 Total Pages :34 pages Book Rating :4.6/5 (792 download)
Book Synopsis Multi-D Cfd Modeling of a Free-Piston Stirling Convertor at NASA Glenn by : National Aeronautics and Space Administration (NASA)
Download or read book Multi-D Cfd Modeling of a Free-Piston Stirling Convertor at NASA Glenn written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-06-21 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt: A high efficiency Stirling Radioisotope Generator (SRG) is being developed for possible use in long duration space science missions. NASA s advanced technology goals for next generation Stirling convertors include increasing the Carnot efficiency and percent of Carnot efficiency. To help achieve these goals, a multidimensional Computational Fluid Dynamics (CFD) code is being developed to numerically model unsteady fluid flow and heat transfer phenomena of the oscillating working gas inside Stirling convertors. Simulations of the Stirling convertors for the SRG will help characterize the thermodynamic losses resulting from fluid flow and heat transfer between the working gas and solid walls. The current CFD simulation represents approximated 2-dimensional convertor geometry. The simulation solves the Navier Stokes equations for an ideal helium gas oscillating at low speeds. The current simulation results are discussed. Wilson, Scott D. and Dyson, Rodger W. and Tew, Roy C. and Ibrahim, Mounir B. Glenn Research Center NASA/TM-2004-213351, AIAA Paper 2004-5673, E-14819
Book Synopsis Multi-D Cfd Modeling of a Free-Piston Stirling Convertor at Nasa Glenn by : Scott D. Wilson
Download or read book Multi-D Cfd Modeling of a Free-Piston Stirling Convertor at Nasa Glenn written by Scott D. Wilson and published by BiblioGov. This book was released on 2013-07 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt: A high efficiency Stirling Radioisotope Generator (SRG) is being developed for possible use in long duration space science missions. NASA s advanced technology goals for next generation Stirling convertors include increasing the Carnot efficiency and percent of Carnot efficiency. To help achieve these goals, a multidimensional Computational Fluid Dynamics (CFD) code is being developed to numerically model unsteady fluid flow and heat transfer phenomena of the oscillating working gas inside Stirling convertors. Simulations of the Stirling convertors for the SRG will help characterize the thermodynamic losses resulting from fluid flow and heat transfer between the working gas and solid walls. The current CFD simulation represents approximated 2-dimensional convertor geometry. The simulation solves the Navier Stokes equations for an ideal helium gas oscillating at low speeds. The current simulation results are discussed.
Book Synopsis CFD Modeling of Free-Piston Stirling Engines by :
Download or read book CFD Modeling of Free-Piston Stirling Engines written by and published by . This book was released on 2001 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Cfd Modeling of Free-piston Stirling Engines ... Nasa by : United States. National Aeronautics and Space Administration
Download or read book Cfd Modeling of Free-piston Stirling Engines ... Nasa written by United States. National Aeronautics and Space Administration and published by . This book was released on 2003* with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :National Aeronautics and Space Administration (NASA) Publisher :Createspace Independent Publishing Platform ISBN 13 :9781721639724 Total Pages :26 pages Book Rating :4.6/5 (397 download)
Book Synopsis Development of a Dynamic, End-To-End Free Piston Stirling Convertor Model by : National Aeronautics and Space Administration (NASA)
Download or read book Development of a Dynamic, End-To-End Free Piston Stirling Convertor Model written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-06-21 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt: A dynamic model for a free-piston Stirling convertor is being developed at the NASA Glenn Research Center. The model is an end-to-end system model that includes the cycle thermodynamics, the dynamics, and electrical aspects of the system. The subsystems of interest are the heat source, the springs, the moving masses, the linear alternator, the controller, and the end-user load. The envisioned use of the model will be in evaluating how changes in a subsystem could affect the operation of the convertor. The model under development will speed the evaluation of improvements to a subsystem and aid in determining areas in which most significant improvements may be found. One of the first uses of the end-toend model will be in the development of controller architectures. Another related area is in evaluating changes to details in the linear alternator. Regan, Timothy F. and Gerber, Scott S. and Roth, Mary Ellen Glenn Research Center NASA/TM-2004-212941, E-14381
Book Synopsis Stirling Convertor Regenerators by : Mounir B. Ibrahim
Download or read book Stirling Convertor Regenerators written by Mounir B. Ibrahim and published by CRC Press. This book was released on 2016-04-19 with total page 475 pages. Available in PDF, EPUB and Kindle. Book excerpt: Stirling Convertor Regenerators addresses the latest developments and future possibilities in the science and practical application of Stirling engine regenerators and technology. Written by experts in the vanguard of alternative energy, this invaluable resource presents integral scientific details and design concepts associated with Stirling conve
Book Synopsis Stirling Technology Development at NASA GRC by :
Download or read book Stirling Technology Development at NASA GRC written by and published by . This book was released on 2002 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis NASA GRC Stirling Technology Development Overview by :
Download or read book NASA GRC Stirling Technology Development Overview written by and published by . This book was released on 2003 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :National Aeronautics and Space Administration (NASA) Publisher :Createspace Independent Publishing Platform ISBN 13 :9781721684380 Total Pages :32 pages Book Rating :4.6/5 (843 download)
Book Synopsis Overview 2004 of Nasa-Stirling Convertor Cfd Model Development and Regenerator R and D Efforts by : National Aeronautics and Space Administration (NASA)
Download or read book Overview 2004 of Nasa-Stirling Convertor Cfd Model Development and Regenerator R and D Efforts written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-06-21 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: This paper reports on accomplishments in 2004 in (1) development of Stirling-convertor CFD models at NASA Glenn and via a NASA grant, (2) a Stirling regenerator-research effort being conducted via a NASA grant (a follow-on effort to an earlier DOE contract), and (3) a regenerator-microfabrication contract for development of a "next-generation Stirling regenerator." Cleveland State University is the lead organization for all three grant/contractual efforts, with the University of Minnesota and Gedeon Associates as subcontractors. Also, the Stirling Technology Company and Sunpower, Inc. are both involved in all three efforts, either as funded or unfunded participants. International Mezzo Technologies of Baton Rouge, Louisiana is the regenerator fabricator for the regenerator-microfabrication contract. Results of the efforts in these three areas are summarized. Tew, Roy C. and Dyson, Rodger W. and Wilson, Scott D. and Demko, Rikako Glenn Research Center NASA/TM-2004-213404, E-14912
Book Synopsis Stirling Dish System Performance Prediction Model by : Paul R. Fraser
Download or read book Stirling Dish System Performance Prediction Model written by Paul R. Fraser and published by . This book was released on 2008 with total page 326 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Space Technology and Applications International Forum - STAIF 2005 by : Mohamed S. El-Genk
Download or read book Space Technology and Applications International Forum - STAIF 2005 written by Mohamed S. El-Genk and published by American Institute of Physics. This book was released on 2005-03-03 with total page 1512 pages. Available in PDF, EPUB and Kindle. Book excerpt: 3rd Symposium on Space Colonization. 2nd Symposium on New Frontiers and Future Concepts, Albuquerque, New Mexico, 13-17 February 2005
Author :National Aeronautics and Space Administration (NASA) Publisher :Createspace Independent Publishing Platform ISBN 13 :9781721685783 Total Pages :30 pages Book Rating :4.6/5 (857 download)
Book Synopsis Application of the Grc Stirling Convertor System Dynamic Model by : National Aeronautics and Space Administration (NASA)
Download or read book Application of the Grc Stirling Convertor System Dynamic Model written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-06-21 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt: The GRC Stirling Convertor System Dynamic Model (SDM) has been developed to simulate dynamic performance of power systems incorporating free-piston Stirling convertors. This paper discusses its use in evaluating system dynamics and other systems concerns. Detailed examples are provided showing the use of the model in evaluation of off-nominal operating conditions. The many degrees of freedom in both the mechanical and electrical domains inherent in the Stirling convertor and the nonlinear dynamics make simulation an attractive analysis tool in conjunction with classical analysis. Application of SDM in studying the relationship of the size of the resonant circuit quality factor (commonly referred to as Q) in the various resonant mechanical and electrical sub-systems is discussed. Regan, Timothy F. and Lewandowski, Edward J. and Schreiber, Jeffrey G. (Technical Monitor) Glenn Research Center NASA/CR-2004-213364, AIAA Paper 2004-5672, E-14832
Author :National Aeronautics and Space Administration (NASA) Publisher :Createspace Independent Publishing Platform ISBN 13 :9781721682072 Total Pages :34 pages Book Rating :4.6/5 (82 download)
Book Synopsis Overview of the Grc Stirling Convertor System Dynamic Model by : National Aeronautics and Space Administration (NASA)
Download or read book Overview of the Grc Stirling Convertor System Dynamic Model written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-06-21 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt: A Stirling Convertor System Dynamic Model has been developed at the Glenn Research Center for controls, dynamics, and systems development of free-piston convertor power systems. It models the Stirling cycle thermodynamics, heat flow, gas, mechanical, and mounting dynamics, the linear alternator, and the controller. The model's scope extends from the thermal energy input to thermal, mechanical dynamics, and electrical energy out, allowing one to study complex system interactions among subsystems. The model is a non-linear time-domain model containing sub-cycle dynamics, allowing it to simulate transient and dynamic phenomena that other models cannot. The model details and capability are discussed. Lewandowski, Edward J. and Regan, Timothy F. Glenn Research Center NASA/CR-2004-213366, AIAA Paper-2004-5671, NAS/1.26:2004-213366, E-14834
Book Synopsis Space Technology and Applications International Forum - STAIF 2004 by : American Institute of Physics
Download or read book Space Technology and Applications International Forum - STAIF 2004 written by American Institute of Physics and published by American Institute of Physics. This book was released on 2004-02-18 with total page 1292 pages. Available in PDF, EPUB and Kindle. Book excerpt: Albuquerque, New Mexico, 8-11 February 2004
Book Synopsis Summary of Stirling Convertor Testing at NASA Glenn Research Center by : Jeffrey G. Schreiber
Download or read book Summary of Stirling Convertor Testing at NASA Glenn Research Center written by Jeffrey G. Schreiber and published by . This book was released on 2006 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Free-piston Stirling Converter Model Development, Validation, and Analysis for Space Power Systems by : Jonathan F. Metscher
Download or read book Free-piston Stirling Converter Model Development, Validation, and Analysis for Space Power Systems written by Jonathan F. Metscher and published by . This book was released on 2014 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt: Using the Sage 1-D Stirling modeling software, a linear alternator model was developed using two separate methods and integrated with an existing ASC Stirling engine model. One used a simplified transducer method, while the other was developed from first principles. The combined models were tuned and validated against test data and then compared against each other. Both validated models are able to match test data within 7% or better.
Author :National Aeronautics and Space Administration (NASA) Publisher :Createspace Independent Publishing Platform ISBN 13 :9781723558511 Total Pages :294 pages Book Rating :4.5/5 (585 download)
Book Synopsis Development of Free-Piston Stirling Engine Performance and Optimization Codes Based on Martini Simulation Technique by : National Aeronautics and Space Administration (NASA)
Download or read book Development of Free-Piston Stirling Engine Performance and Optimization Codes Based on Martini Simulation Technique written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-07-24 with total page 294 pages. Available in PDF, EPUB and Kindle. Book excerpt: A FORTRAN computer code is described that could be used to design and optimize a free-displacer, free-piston Stirling engine similar to the RE-1000 engine made by Sunpower. The code contains options for specifying displacer and power piston motion or for allowing these motions to be calculated by a force balance. The engine load may be a dashpot, inertial compressor, hydraulic pump or linear alternator. Cycle analysis may be done by isothermal analysis or adiabatic analysis. Adiabatic analysis may be done using the Martini moving gas node analysis or the Rios second-order Runge-Kutta analysis. Flow loss and heat loss equations are included. Graphical display of engine motions and pressures and temperatures are included. Programming for optimizing up to 15 independent dimensions is included. Sample performance results are shown for both specified and unconstrained piston motions; these results are shown as generated by each of the two Martini analyses. Two sample optimization searches are shown using specified piston motion isothermal analysis. One is for three adjustable input and one is for four. Also, two optimization searches for calculated piston motion are presented for three and for four adjustable inputs. The effect of leakage is evaluated. Suggestions for further work are given. Martini, William R. Unspecified Center NASA-CR-182210, NAS 1.26:182210 NAS3-22256; RTOP 586-01-11...
