67 Hits in 5.8 sec


C. Kiris, Dochan Kwak, W. Chan
2000 ACM/IEEE SC 2000 Conference (SC'00)  
This paper reports the progress being made towards complete turbo-pump simulation capability for liquid rocket engines.  ...  Unsteady computations for SSME turbo-pump, which contains 101 zones with 31 Million grid points, are carried on Origin 2000 systems at NASA Ames Research Center.  ...  Taft for providing NAS-MLP routines.  ... 
doi:10.1109/sc.2000.10053 dblp:conf/sc/KirisKC00 fatcat:iweztopuxrhirkn7mkr4z53uky

Time-Dependent Simulation of Incompressible Flow in a Turbopump Using Overset Grid Approach [chapter]

Cetin Kiris, Dochan Kwak
2001 Frontiers of Computational Fluid Dynamics 2002  
Unsteady computations for a turbo-pump, which contains 114 zones with 34.3 Million grid points, are performed on Origin 2000 systems at NASA Ames Research Center.  ...  The approach taken for these simulations, and the performance of the parallel versions of the code are presented.  ...  Taft for providing NAS-MLP routines.  ... 
doi:10.1142/9789812810793_0020 fatcat:nymqtbhkzrennlvcl22nhvlevq

A Three-Dimensional Parallel Time-Accurate Turbopump Simulation Procedure Using Overset Grid Systems [chapter]

C. Kiris, W. Chan, D. Kwak
2003 Computational Fluid Dynamics 2002  
In the proposed paper, the progress toward the capability of complete simulation of the turbo-pump for a liquid rocket engine is reported.  ...  The objective of the current effort is to provide a computational framework for design and analysis of the entire fuel supply system of a liquid rocket engine, including high-fidelity unsteady turbopump  ...  Rocket Pump Flow Solver Flow Simulation Procedure for Rocket Pump • A Cast; Study CFU Applications to Consortium Impeller • Summary and Discussion _,_c_ Introduction • Turbopump  ... 
doi:10.1007/978-3-642-59334-5_102 fatcat:qbx2jekjdfh6tksnpl2q54dorm

Analytical Model for Liquid Rocket Propellant Feedline Dynamics

1974 Journal of Spacecraft and Rockets  
A more general non- linear distributed parameter model for calculating unsteady flow in liquid filled rocket propellant feed systems was developed at the NASA Lewis Research Center, which the authors called  ...  Index categories: LV/M Dynamics, Uncontrolled; Liquid Rocket Engines ; Wave Motion and Sloshing. * Research Engineer, Department of Mechanical Sciences.  ... 
doi:10.2514/3.62035 fatcat:tybtceisunhnjlbsd6tx25hpgu

Large Eddy Simulation of the Dynamic Response of an Inducer to Flow Rate Fluctuations

Dong-Hyuk Kang, Koichi Yonezawa, Tatsuya Ueda, Nobuhiro Yamanishi, Chisachi Kato, Yoshinobu Tsujimoto
2009 International Journal of Fluid Machinery and Systems  
From the conservations of angular momentum and energy, an expression useful for the evaluation of unsteady pressure rise was obtained.  ...  A Large Eddy Simulation (LES) of the flow in an inducer is carried out under flow rate oscillations.  ...  Introduction In turbo-pumps for rocket engines, an inducer is installed to prevent the head drop of the main pump impeller caused by cavitation.  ... 
doi:10.5293/ijfms.2009.2.4.431 fatcat:y5dykfzgnrg4voggaja7676fgu

Prediction of Wall Heat Fluxes in a Rocket Engine with Conjugate Heat Transfer Based on Large-Eddy Simulation

Luc Potier, Florent Duchaine, Bénédicte Cuenot, Didier Saucereau, Julien Pichillou
2022 Entropy  
is converted into kinetic energy to drive the turbo-pumps of the feeding system.  ...  engines, including liquid injection, combustion model, and wall treatment.  ...  Liquid Injection Model Coaxial injectors are used in rocket engine for their efficiency in the atomization of the liquid jet.  ... 
doi:10.3390/e24020256 pmid:35205550 pmcid:PMC8871269 fatcat:eoqphtv72rhrdmyh2pwcknlnoq

Experiments and modeling of cavitating flows in venturi: attached sheet cavitation

S. Barre, J. Rolland, G. Boitel, E. Goncalves, R. Fortes Patella
2009 European journal of mechanics. B, Fluids  
New double optical probe measurements were performed and special data processing methods were developed to estimate void ratio and velocity fields for cold water flows.  ...  By applying a computational method previously developed in LEGI Laboratory based on the code Fine TM /Turbo and on a barotropic approach, several steady calculations were performed in cold water cavitating  ...  The authors wish also to express their gratitude to NUMECA International for its cooperation to the development of the numerical code.  ... 
doi:10.1016/j.euromechflu.2008.09.001 fatcat:i32vytqijzgblpuqecqqd5ak3m

Backflow Vortex Cavitation and Its Effects on Cavitation Instabilities

Kazuyoshi Yamamoto, Yoshinobu Tsujimoto
2009 International Journal of Fluid Machinery and Systems  
However, there are certain cases when it is required to take account of unsteady characteristics.  ...  Cavitation instabilities in turbo-machinery such as cavitation surge and rotating cavitation are usually explained by the quasi-steady characteristics of cavitation, mass flow gain factor and cavitation  ...  For high speed turbo-pumps such as for rocket engines, an axial stage with high solidity is often attached at the inlet of centrifugal main pump, to improve cavitation performance.  ... 
doi:10.5293/ijfms.2009.2.1.040 fatcat:egxwyzroezccfoiyuuftie2syy

Suppression of Cavitation Instabilities in an Inducer by Circumferential Groove and Explanation of Higher Frequency Components

Dong-Hyuk Kang, Yusuke Arimoto, Koichi Yonezawa, Hironori Horiguchi, Yutaka Kawata, Chunill Hah, Yoshinobu Tsujimoto
2010 International Journal of Fluid Machinery and Systems  
From the analysis of pressure pattern similar to that for rotor-stator interaction, it was found that the higher frequency components are caused by the interaction of backflow vortices with the inducer  ...  This study was made under the support of Grant-in-Aid for Scientific Research (B).  ...  The authors would like to thank also Mr.Sen Meng of PWR and Dr.Maria Subbaraman of Aerojet Corp. for their useful suggestions.  ... 
doi:10.5293/ijfms.2010.3.2.137 fatcat:2ynv23xrhzau3bvsiofovoqq6u

Autophage Engines: Toward a Throttleable Solid Motor

Vitaly Yemets, Patrick Harkness, Mykola Dron', Anatoly Pashkov, Kevin Worrall, Michael Middleton
2018 Journal of Spacecraft and Rockets  
This paper describes the instrumented test-firing of a rocket which seeks to combine the throttleability of a liquid-fueled engine with the simplicity of a solid motor.  ...  These correlated cycles of control input (the feed force), throttle response (the propellant feed rate) and implied thrust (the chamber pressure) demonstrate, for the first time, a simple solid rocket  ...  Introduction IQUID fueled engines can be throttled and even restarted by pumping fuel and oxidizer into the combustion chamber as desired, but their turbo-pump feed systems, injection heads, cooling channels  ... 
doi:10.2514/1.a34153 fatcat:w43q7672avd4hfisyjntr4w5ju

Present State of CFD Softwares Application for Launch Vehicle Analysis
발사체 해석을 위한 CFD 소프트웨어 적용 현황

Hwanghui Jeong, Jae Yeol Kim, Jae-Ryul Shin
2020 Journal of the Korean Society of Propulsion Engineers  
Please visit the following URL for additional information: http://opensource .gsfc .nasa .gov/projects/xml2he/index .  ...  ., a fuel pump in a liquid-fueled rocket engine) or compressible (e .g ., the turbine that drives that fuel pump) . U.S.  ...  Release OnlyThe Rocket Engine Transient Simulation (ROCETS) software consists of a library of rocket engine component software modules for combustion chambers, nozzles, turbines, pumps, valves, lines,  ... 
doi:10.6108/kspe.2020.24.3.071 fatcat:trxkhiuqrjakll32bcjxskgwju

Robin Ralph Jamison, 12 July 1912 - 18 March 1991

Lionel Haworth, M. A. Nedham, G. L. Wilde
1994 Biographical Memoirs of Fellows of the Royal Society  
The requirement was for normal take-off and landing, and the propulsion system consisted of turbo-ramjets with conventional gas-turbine engines for take-off and acceleration at lower supersonic speeds.  ...  altitude simulation was excessively expensive.  ...  His daughter, Jean, was with them for the first month.  ... 
doi:10.1098/rsbm.1994.0034 fatcat:wfbjh2c3zzhr7msj6yv7wlhl3i

7・8 自然エネルギー利用(7.流体工学,<特集>機械工学年鑑)

原 豊
2012 Journal of the Society of Mechanical Engineers  
. , Unsteady Analysis of Impeller− Volute Interaction in Centr血 gal Pump , Int . J .  ...  G , , De − composition of Deterministic Unsteadiness in a Centri 釦 gal Tu 卜 bomachine ; Nonlinear Interactions Between the Impeller Flow and Vt ) lute for a Double Suctien Pump , ASME J .  ...  The Japan Sooiety of Meohanioal Engineers 550 日本 機 械 学 会 誌 2012. 8 Vol、 115 No . 1125 New Approach in Numerical Assessment of the Cavitation Be − haViour of CentrifUgal Pumps , Int. J.  ... 
doi:10.1299/jsmemag.115.1125_547_4 fatcat:swe7pensazdndpybuulznh53gi

3D Numerical Simulation of Pump Cavitating Behavior

O. Coutier-Delgosha, R. Fortes-Patella, J. L. Reboud, B. Pouffary
2002 Volume 2: Symposia and General Papers, Parts A and B   unpublished
A continuing effort is pursued to improve the prediction accuracy, and to simulate unsteady effects observed in experiments, as, for example, rotating cavitation.  ...  The quasi-steady cavitating behavior of three pumps was investigated by 3D unsteady viscous computations.  ...  EDF R&D Division and the CREMHyG Laboratory are also thanked for the experimental results, respectively in the centrifugal pump and the inducer geometry cases.  ... 
doi:10.1115/fedsm2002-31188 fatcat:s7lrz3hoozdg7gismq45hwacm4

Optimization of Heat and Mass Exchange

Brian Agnew, Ivan CK Tam, Xiaojun Shi
2020 Processes  
The needs of society are often a driving force for engineering research [...]  ...  Conflicts of Acknowledgments: We are grateful to the Chinese government scholarship council (CSC) for the scholarship award.  ...  Also, thankful to Yong Xu for his continued guidance throughout the work. Conflicts of Interest: The authors declare no conflict of interest.  ... 
doi:10.3390/pr8030314 fatcat:xflgj34ox5dm5eucav5cm2ypey
« Previous Showing results 1 — 15 out of 67 results