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Monday, November 9, 2020 | History

3 edition of Real gas effects on the performance of hydrocarbon-fueled pulse detonation engines found in the catalog.

Real gas effects on the performance of hydrocarbon-fueled pulse detonation engines

Real gas effects on the performance of hydrocarbon-fueled pulse detonation engines

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  • 38 Currently reading

Published by National Aeronautics and Space Administration, Glenn Research Center in [Cleveland, Ohio] .
Written in English

    Subjects:
  • Flow distribution.,
  • Gas mixtures.,
  • Hydrocarbon fuels.,
  • Pulse detonation engines.,
  • Real gases.,
  • Thermodynamics.

  • Edition Notes

    StatementLouis A. Povinelli, Shaye Yungster.
    Series[NASA technical memorandum] -- NASA/TM-2003-212211., NASA technical memorandum -- 212211.
    ContributionsYungster, Shaye., NASA Glenn Research Center.
    The Physical Object
    FormatMicroform
    Pagination1 v.
    ID Numbers
    Open LibraryOL16098772M

    The Humphrey cycle is a thermodynamic cycle similar to the pulse detonation engine and pulse compression detonation system cycles. It may be considered to be a modification of the Brayton cycle in which the constant-pressure heat addition process of the Brayton cycle is replaced by a constant-volume heat addition process. The concept Engineering Fluid Dynamics represents the subject, aboutness, idea or notion of resources found in Boston University Libraries.


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Real gas effects on the performance of hydrocarbon-fueled pulse detonation engines Download PDF EPUB FB2

Real Gas Effects on the Performance of Hydrocarbon-Fueled Pulse Detonation Engines. The real gas effects on the sensible heat release were found to be significantly large so as to have an.

AIREX: Real Gas Effects on the Performance of Hydrocarbon-fueled Pulse Detonation Engines This paper presents results for a single-pulse detonation tube wherein the effects of high temperature dissociation and the subsequent recombination influence the sensible heat release available for providing propulsive by: The study involved the use of ethylene and air at equivalence ratios of and The real gas effects on the sensible heat release were found to be significantly large so as to have an impact on the thrust, impulse and fuel consumption of a PDEAuthor: Louis A.

Povinelli and Shaye Yungster. DISSOCIATION AND RECOMBINATION EFFECTS ON THE. Real Gas Effects on the Performance of Hydrocarbon-Fueled Pulse Detonation Engines the effect of flight Mach number on the relative.

Performance modeling of pulse detonation engines using the method of characteristics. L.A. Povinelli, S. Yungster, Real Gas Effects on the Performance of Hydrocarbon-Fueled Pulse Detonation Engines, NASA TM, Google ScholarCited by: 2.

The effect of fuel pretreatment on performance of pulse detonation rocket engines Experimental Thermal and Fluid Science, Vol. 41 Assessment of flash-boiling for pulse detonation enginesCited by: Computational studies of pulse detonation engines (PDEs) include assessing the impact of chemical recombination and detonation initiation conditions on the computed performance and estimating the theoretical performance of an ideal PDE.

A wide range of cases involving partial fuel-fill effects have been investigated to quantify the effects, elucidate the underlying mechanism, and derive a limiting value for the performance enhancement.

Pulse detonation engines (PDEs) are new exciting propulsion technologies for future propulsion applications. The operating cycles of PDE consist of fuel-air mixture, combustion, blowdown, and purging. The combustion process in pulse detonation engine is the most important phenomenon as it produces reliable and repeatable detonation waves.

The detonation wave initiation in detonation tube in Cited by: Recently, the focus has been laid on the characteristics of pollutant emissions from pulse detonation combustion (PDC). Initial studies indicate possibly high nitrogen oxides (NO x) emissions, so the assessment of potential primary reduction methods is present work considers the following reduction methods: lean combustion, nitrogen and steam dilution, as well as flue gas Cited by: 1.

The pulse mode of pulse detonation rocket engines allows the fuel to be injected at a low pressure of about pounds per square inch. Marshall Engineers and industry partners United Technology Research Corp. of Tullahoma, Tenn. and Adroit Systems Inc.

of Seattle have built small-scale pulse detonation rocket engines for ground testing. Get this from a library. Real gas effects on the performance of hydrocarbon-fueled pulse detonation engines.

[Louis A Povinelli; Shaye Yungster; NASA Glenn Research Center.]. A system-level design of novel detonation engines, performance analysis, and advanced experimental and numerical methods are covered. In addition, the world’s first successful sled demonstration of a rocket rotating detonation engine system and innovations in the development of a kilohertz pulse detonation engine (PDE) system are reported.

The real gas effects on the sensible heat release were found to be significantly large so as to have an impact on the thrust, impulse and fuel consumption of a PDE. INTRODUCTION In our previous publication (ref. 1) it was shown that the high detonation temperatures associated with hydrocarbon-air and hydrogen-air mixtures caused a substantial amount of dissociation, and was accompanied.

performance. The analysis provides preliminary engine sizing and operational information of hydrocarbon fuelled pulse detonation engines for future tactical missile systems and boost-phase propulsion for hypersonic air-breathing engines.

Introduction Detonation waves are a highly efficient means of combustion. pulse detonation engines (PDEs) or rotational detonation engines (RDEs) to enable the next generation of gas turbine engines, new engine cycles, and combined-cycles.

Povinelli and S. Youngster, “Real Gas Effects on Performance of Hydrocarbon- fueled Pulse Detonation Engines,” AIAApresented at 42 nd Aerospace Sciences Meeting and Exhibit, Reno, NV, January, 9. [28] Povinelli L. and Yungster S., “ Real Gas Effects on the Performance of Hydrocarbon-Fueled Pulse Detonation Engines,” NASA TM, Link Google ScholarCited by: 2.

Detonations, usually associated with explosives and explosions, produce very high pressures and high velocities. Thus, if harnessed in a gas turbine combustor, detonation could reduce the need for some expensive compressor and turbine hardware, lighten engine weight and possibly increase gas turbine power : Lee S.

Langston. Effect of Oxygen Enrichment on Combustion Characteristics of a Diesel Journal of Engineering Science and Technology NovemberVol. 12(11) effectiveness depends on the local concentration of oxygen in the fuel plume. Cole et al. [7] studied the technical and economic feasibility of diesel engines forFile Size: KB.

As an object moves through a gas, the gas molecules near the object are disturbed and move around the object. Aerodynamic forces are generated between the gas and the object and the magnitude of these forces depend on many factors associated with the object and the gas. The speed of the object relative to the gas introduces many significant effects.

We characterize the speed of the. Effects of Gas Composition on the Performance and Hydrocarbon Emissions for CNG Engines Natural gas is considered to be an alternative fuel for passenger cars, truck transportation and stationary engines that can provide both good environmental effect Cited by: Some Effects of Engine-Fuel Variables on Exhaust Gas Hydrocarbon Content* F.

ROUNDS, P. BENNETT, AND G. NEBEL Research Laboratories Division General Motors Corporation Detroit, Michigan Since the twenties it has been known that automotive engine exhaust gases contain hydrocarbons(1'2), but the.

``Pulse detonation engine impulse and detonation sensitivity analysis for partially oxidized jet fuel.'' 17th International Symposium on Airbreathing Engines, Munich, September ISABE, Effect of Exhaust Gas Recirculation on the Performance and Emissions of a Dual Fuel Engine Operated on CNG-Biodiesel-Ethanol Blends rajappa 1, rmath 2 1 Associate professor, Mechanical engineering Department, V S M Institute of Technology, Nippani, Karnataka,Cited by: 4.

Effects of Baffle Plate on Flow Field and Performance of Two-Phase Pulse Detonation Engines View Section, Research on the 3D Reconstruction for Railgun Bore Scanning Based on Combined Binocular Vision and Laser Marking. fraction of residual gases.

Ergenc, Koca, & Abacioglu,[4] investigate the effect of the various fuel injection advance angles on the combustion quality of bio-diesel blends.

At the light of obtained values, no negative impact observed on performance with the addition 20% of ester. It is seen that. Pulse detonation rocket engines (PDREs) offer potential performance improvements over conventional designs, but represent a challenging modeling task. A quasiD, finite-rate chemistry computational fluid dynamics model for PDREs is described and by: Pressure, Volume, and Temperature Relationships in Real Gases.

For an ideal gas, a plot of PV/nRT versus P gives a horizontal line with an intercept of 1 on the PV/nRT axis. Real gases, however, show significant deviations from the behavior expected for an ideal gas, particularly at high pressures (part (a) in Figure "Real Gases Do Not Obey the Ideal Gas Law, Especially at High Pressures").

Rotating detonation engines are a novel device for generating thrust from combustion, in a highly efficient, yet mechanically simple form. This chapter presents a detailed literature review of rotating detonation engines. Particular focus is placed on the theoretical aspects and the fundamental operating principles of these engines.

The review covers both experimental and computational studies Author: Ian J. Shaw, Jordan A.C. Kildare, Michael J. Evans, Alfonso Chinnici, Ciaran A.M. Sparks, Shekh N.H. Effect of Hydrogen Enriched Hydrocarbon Combustion on Emissions and Performance engines can be fueled with standard diesel, biodiesel or Effect of H2 addition on natural gas combustion hydrocarbon emissions [8] Figure 8: Emission before hydrogen addition [2]Cited by: 8.

in CI engines, yet it still lacks clarity. Different results were obtained in different research experiments and this necessitates the urge to carry out a review to bridge the gap. We take this as an opportunity to make a review on the performance, emission, combustion effects on addition of hydrogen with diesel in a CI engines.

Effect of Hydroxy (HHO) Gas Addition on Performance and Exhaust Emissions in Spark Ignition (Si) Engine – A Review Rasik S. Kuware, 1 Ajay V. Kolhe 2 Dept. of Mechanical Engineering, Kavikulguru Institute of Technology and Science, Ramtek, Dist. Nagpur, Size: KB.

Hydrogen-enriched engines produce approximately the same brake power and higher thermal efficiency than diesel engines over the entire range of operation [7, 8]. With a lesser pilot quantity of diesel, hydrogenenriched engines give higher brake thermal efficiency with smoother combustion than a Cited by: 6.

FUEL EFFECTS ON GAS TURBINE COMBUSTION SYSTEMS«Stanley A. Hosier Pratt S. Whitney Aircraft Engineering Division /^ West Palm Beach, FL USA / AD-P SUHHART ^ ^The effects of variations in properties and characteristics of liquid hydrocarbon-base fuels in gas turbine engine combustors was investigated.

An engine or motor is a machine designed to convert one form of energy into mechanical energy. Heat engines, like the internal combustion engine, burn a fuel to create heat which is then used to do work. Electric motors convert electrical energy into mechanical motion, pneumatic motors use compressed air, and clockwork motors in wind-up toys use elastic energy.

Pulsejet Thrust Augmentors 9 May Rendering of next X-Jet prototype 6 May Pulsejet-powered speedboat 9 April Pulse Detonation Engines 6 April How to start a pulsejet 1 April Not accepting new orders 13 March My accident 13 February My Lockwood Engine 13 February Making Reed-valves Last Longer 13 February My stuff is being stolen - beware of fakes The development of a pulse detonation engine simulator facility.

Technical Report FM, Graduate Aeronautical Laboratories, California Institute of Technology, December J. Jewell. Boundary-Layer Transition on a Slender Cone in Hypervelocity Flow with Real Gas Effects. Application of Hydrogen as Fuel Supplement in Internal Combustion hydrocarbon combustion and emissions performance of both SI and CI engines.

This article presents a brief review on the (HHO) gas addition on performance and exhaust emissions in compression ignition engines,” Int.

Hydrogen Energy, vol. 35,File Size: KB. The purpose of this paper is to review current studies concerning the relationship of fuel composition to vehicle engine-out and tail-pipe emissions and to outline future research needed in this area.

A number of recent combustion experiments and vehicle Cited by: hydrocarbon-fueled engines capable of operating over a broad range of flight Mach numbers.

and evaluate revolutionary combustion and propulsion concepts for gas turbine, pulse detonation, and combined cycle engines for missiles, manned and unmanned systems. Explored the interactions and effects of compressor and turbine components on.

Engines have a relatively narrow temperature band in which they operate most effectively. Too cold and fuel has trouble atomizing before the combustion process.

Too hot and preignition in the chamber has almost identical negative effects to knock or expansion and distortion risk, warping critical sealing surfaces.dijkstra writes "Blackswift was previously rumored to be a super secret hypersonic scramjet-based aircraft co-named HTV-3X, essentially a 21st century version of the SRToday NASA has unveiled the real Blackswift (video link), which uses pulse detonation engines (PDEs).

A PDE is essentially a modern version of the old V-1 buzz bomb engine. This engine requires significantly fewer moving 5/5().Probably the most studied area of engine performance since detonation limits maximum performance.

The term “detonation is used to describe the very high pressure shock waves traveling at supersonic (compared to immediately local conditions) velocities (which is the only way you can create a shock wave).

These waves cause real life broken.