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Numerical Simulation Of Rarefied Nozzle Plume Impingements
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Book Synopsis Numerical Simulation of Rarefied Nozzle Plume Impingements by :
Download or read book Numerical Simulation of Rarefied Nozzle Plume Impingements written by and published by . This book was released on 2000 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: This paper describes numerical simulation of rarefied nozzle plume impingements. Two different reservoir pressures 400 kPa and 4 kPa are considered, In the case of 400 kPa, the simulation of the nozzle flow was conducted by using the Navier-Stokes equation and then the analysis of the plume flow was carried out by the DSMC method employing the nozzle exit conditions obtained by Navier-Stokes equation. On the other hand., for 4 kPa both the nozzle flow and the plume impingement have been calculated using the DSMC method. Concerning the angle between the nozzle axis and the flat plate, three kinds of angle are selected, that is 90 degrees, 45 degrees and 0 degrees. In addition, we considered the case where there exists a flat plate behind the nozzle. Simulated results have been compared with the existing experiments for the pressure and shear stress distributions on the flat plate. A good agreement between the DSMC results and the experiments are shown. In the case of the oblique and parallel impingements, the location of the impingement pressure peak and the stagnation point shifted upstream with increasing rarefaction.
Book Synopsis Experimental and Numerical Study of Nozzle Plume Impingement on Spacecraft Surfaces by :
Download or read book Experimental and Numerical Study of Nozzle Plume Impingement on Spacecraft Surfaces written by and published by . This book was released on 2005 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: An experimental and numerical effort was undertaken to assess the effects of a cold gas (To=300K) nozzle plume impinging on a simulated spacecraft surface. The nozzle flow impingement is investigated experimentally using a nano-Newton resolution force balance and numerically using the Direct Simulation Monte Carlo (DSMC) numerical technique. The Reynolds number range investigated in this study is from 0.5 to approximately 900 using helium and nitrogen propellants. The thrust produced by the nozzle was first assessed on a force balance to provide a baseline case. Subsequently, an aluminum plate was attached to the same force balance at various angles from 0 degrees (parallel to the plume flow) to 10 degrees. For low Reynolds number helium flow, a 16.5% decrease in thrust was measured for the plate at 0 degrees relative to the free plume expansion case. For low Reynolds number nitrogen flow, the difference was found to be 12%. The thrust degradation was found to decrease at higher Reynolds numbers and larger plate angles.
Book Synopsis Numerical Study of Rarefied Hypersonic Flow Interacting with a Continuum Jet by : Christopher E. Glass
Download or read book Numerical Study of Rarefied Hypersonic Flow Interacting with a Continuum Jet written by Christopher E. Glass and published by . This book was released on 2000 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt: An uncoupled CFD-DSMC technique is developed and applied to provide solutions for continuum jets interacting with rarefield external flows. The technique is based on a correlation of the appropriate Bird breakdown parameter for a transitional-rarefield condition that defines a surface within which the continuum solution is unaffected by the external flow-jet interaction. The method is applied to two problems to assess and demonstrate its validity: one of a jet interaction in the transitional-rarefied flow regime and the other in the moderately rarefield regime. Results show that the appropriate Bird breakdown surface for uncoupling the continuum and non-continuum solutions is a function of a non-dimensional parameter relating the momentum flux and collisionality between the two interacting flows.
Book Synopsis Nozzle Plume Impingement on Spacecraft Surfaces: Effects of Surface Roughness (POSTPRINT). by :
Download or read book Nozzle Plume Impingement on Spacecraft Surfaces: Effects of Surface Roughness (POSTPRINT). written by and published by . This book was released on 2005 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: An experimental and numerical effort was undertaken to assess the effects of a cold gas (To=300K) nozzle plume impinging on a simulated spacecraft surface. The nozzle flow impingement is investigated experimentally using a nano-Newton resolution force balance and numerically using the Direct Simulation Monte Carlo (DSMC) numerical technique. The Reynolds number range investigated in this study is from 0.5 to approximately 900 using helium and nitrogen propellants. The thrust produced by the nozzle was first assessed on a force balance to provide a baseline case. Subsequently, an aluminum plate was attached to the same force balance at various angles from 0? (parallel to the plume flow) to 10?. For low Reynolds number helium flow, a 16.5% decrease in thrust was measured for the plate at 0? relative to the free plume expansion case. For low Reynolds number nitrogen flow, the difference was found to be 12%. The thrust degradation was found to decrease at higher Reynolds numbers and larger plate angles. The roughness of the simulated spacecraft surface will be a variable in the testing to be performed for this manuscript.
Book Synopsis Rarefied Gas Dynamics by : M. Capitelli
Download or read book Rarefied Gas Dynamics written by M. Capitelli and published by American Institute of Physics. This book was released on 2005-06-21 with total page 1386 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book contains papers presented at the 24th International Symposium on Rarefied Gas Dynamics, a conference that is recognized as the principal forum for the presentation of recent advances in the field of rarefied gas dynamics. The topics include fundamental aspects of Boltzmann and related equations, transport theory, Monte Carlo methods, kinetic theory, gas phase molecular collision dynamics, gas surface interaction, state to state kinetics, rarefied plasmas, and non-equilibrium plasma kinetics. Applications in the fields of internal flows, vacuum systems, rarefied jets, plumes, molecular beams, scamjets and hypersonics, microflows, granular gases, electrical thrusters are discussed. Researchers in the fields of mathematics, physics, chemistry and engineering can strongly benefit from the interdisciplinary nature of the book.
Book Synopsis Rarefied Gas Dynamics by : Bernie D. Shizgal
Download or read book Rarefied Gas Dynamics written by Bernie D. Shizgal and published by AIAA. This book was released on 1994 with total page 580 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Automatic Control in Aerospace 1992 by : D.B. DeBra
Download or read book Automatic Control in Aerospace 1992 written by D.B. DeBra and published by Elsevier. This book was released on 2017-01-11 with total page 573 pages. Available in PDF, EPUB and Kindle. Book excerpt: Space vehicles have become increasingly complex in recent years, and the number of missions has multiplied as a result of extending frontiers in the exploration of our planetary system and the universe beyond. The advancement of automatic control in aerospace reflects these developments. Key areas covered in these proceedings include: the size and complexity of spacecrafts and the increasingly stringent performance requirements to be fulfilled in a harsh and unpredictable environment; the merger of space vehicles and airplanes into space planes to launch and retrieve payloads by reusable winged vehicles; and the demand to increase space automation and autonomy to reduce human involvement as much as possible in manned, man-tended and unmanned missions. This volume covers not only the newly evolving key technologies but also the classical issues of guidance, navigation and control.
Book Synopsis Rarefied Gas Dynamics by : John Harvey
Download or read book Rarefied Gas Dynamics written by John Harvey and published by Oxford University Press, USA. This book was released on 1995 with total page 784 pages. Available in PDF, EPUB and Kindle. Book excerpt: The proceedings of the International Symposium on Rarefied Gas Dynamics is the standard reference work in the subject, drawing contributions from the finest researchers throughout the world. Presenting recent advances in the field of low density gas dynamics, this multidisciplinary collection covers kinetic theory, transport processes, and non-equilibrium phenomena and gases. It will be invaluable for physicists, mathematicians, engineers, and chemists working in the field.
Book Synopsis Numerical Simulation of a Thrust Augmented Rocket Nozzle by :
Download or read book Numerical Simulation of a Thrust Augmented Rocket Nozzle written by and published by . This book was released on 2006 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt: Numerical results are presented from a reacting-flow Navier-Stokes simulation of a rocket nozzle in which fuel is injected downstream of the nozzle throat for the purposes of augmenting the thrust. The numerical results are compared with experimental data in terms of overall thrust and specific impulse as well as pressure distribution along the nozzle wall. The flow physics associated with the thrust augmentation is also described. The investigation shows that propellant injection downstream of the throat is a viable method for augmenting rocket thrust. In addition, the augmented thrust levels increase with increasing levels of injected mass flow. Finally, the investigation shows that the numerical predictions are in good agreement with the experimental results.
Book Synopsis Measurement and Analysis of a Small Nozzle Plume in Vacuum by : P. F. Penko
Download or read book Measurement and Analysis of a Small Nozzle Plume in Vacuum written by P. F. Penko and published by . This book was released on 1993 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Numerical Simulation of the Dynamics of Large Fire Plumes and the Phenomenon of Puffing by : A. F. Ghoniem
Download or read book Numerical Simulation of the Dynamics of Large Fire Plumes and the Phenomenon of Puffing written by A. F. Ghoniem and published by . This book was released on 1996 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Probabilistic Design of a Rocket Nozzle by :
Download or read book Probabilistic Design of a Rocket Nozzle written by and published by . This book was released on 2008 with total page 59 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Numerical Simulation of an Advanced Airblast Fuel Nozzle Under Rich-burn Condition by : S. L. Yang
Download or read book Numerical Simulation of an Advanced Airblast Fuel Nozzle Under Rich-burn Condition written by S. L. Yang and published by . This book was released on 1994 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis 40th AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit July 11-14, 2004, Fort Lauderdale, FL. by :
Download or read book 40th AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit July 11-14, 2004, Fort Lauderdale, FL. written by and published by . This book was released on 2004 with total page 532 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Rarefied Gas Dynamics written by and published by . This book was released on 2009 with total page 1212 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Laboratory and Numerical Simulation of Plume Dispersion in Stably Stratified Flow Over Complex Terrain by : Jung-Tai Lin
Download or read book Laboratory and Numerical Simulation of Plume Dispersion in Stably Stratified Flow Over Complex Terrain written by Jung-Tai Lin and published by . This book was released on 1974 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Rarefied Gas Dynamics by : O.M. Belotserkovskii
Download or read book Rarefied Gas Dynamics written by O.M. Belotserkovskii and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 697 pages. Available in PDF, EPUB and Kindle. Book excerpt: 100 keV) of neutral hydrogen 7 atoms . The design of the cesium jettarget intended to achieve the 7 following goals : - Supersonic nozzle - cooled skimmer system to increase the fraction 8 of the total nozzle flux Jn which is used as the jettarget flux Jt, 8 = Jt/Jn, from low values 8
