Thesis--Illinois

Topics: Helium, Equations of state

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Jun 17, 2010
06/10

by
Nanda, V. S.; Simha, R

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No Abstract Available

Topics: EQUATIONS OF STATE, GLASS, LIQUIDS

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4.0

Jul 26, 2019
07/19

by
Leung, Y. C

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iv, 268 p. : 25 cm

Topics: Condensed matter, Equations of state, Nuclear matter

1,463
1.5K

Dec 10, 2009
12/09

by
Kuenen, J. P. (Johannes Petrus), 1866-1922

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Book digitized by Google from the library of University of California and uploaded to the Internet Archive by user tpb.

Topics: Equations of state, Kinetic theory of gases

Source: http://books.google.com/books?id=Hl5DAAAAIAAJ&oe=UTF-8

1 v. (various foliations) ; 29 cm

Topics: Equations of state, Thermodynamics -- Mathematical models

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667

Sep 14, 2008
09/08

by
Kuenen, J. P. (Johannes Petrus), 1866-1922

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Book digitized by Google from the library of the University of Michigan and uploaded to the Internet Archive by user tpb.

Topics: Equations of state, Kinetic theory of gases

Source: http://books.google.com/books?id=eigFAAAAMAAJ&oe=UTF-8

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232

Jun 21, 2010
06/10

by
Hsieh, H. C.; Rowe, J. E

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Relativistic electron flow focusing

Topics: HELIUM, HIGH PRESSURE, TEMPERATURE GRADIENTS, THERMODYNAMIC PROPERTIES, EQUATIONS OF STATE

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Jun 9, 2011
06/11

by
Seifert, Avi; Pack-Melton, La Tuni

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Effective delay of turbulent boundary layer separation could be achieved via closed-loop control. Constructing such a system requires that sensor data be processed, real-time, and fed into the controller to determine the output. Current methods for detection of turbulent boundary layer separation are lacking the capability of localized, fast and reliable identification of the boundary layer state. A method is proposed for short-time FFT processing of time series, measured by hot-film sensors,...

Topics: FEEDBACK CONTROL, NONLINEARITY, RICCATI EQUATION, EQUATIONS OF STATE, REGULATORS

In previously reported computational studies of fuse opening switches and other exploding metallic foils, apparent inaccuracies in the constitutive relations for the fuse material limited the accuracy of the modeling. In this paper, we use recently developed constitutive property models to re-examine experiments that used flux compression generators to deliver 25-35 MA to a copper fuse. Based upon this preliminary study, it is difficult to conclude that the newly developed models offer...

Topics: DTIC Archive, LOS ALAMOS NATIONAL LAB NM, *PARTICLE ACCELERATORS, *SWITCHES, EQUATIONS OF STATE,...

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284

Jun 13, 2011
06/11

by
Hayden, Sandra C.; Tumer, Ire

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Mission-critical events are defined in the Jet Propulsion Laboratory s Flight Project Practices as those sequences of events which must succeed in order to attain mission goals. These are dependent on the particular operational concept and design reference mission, and are especially important when committing to irreversible events. Critical events include main engine cutoff (MECO) after launch; engine cutoff or parachute deployment on entry, descent, and landing (EDL); orbital insertion;...

Topics: STELLAR MASS, NEUTRON STARS, MATTER (PHYSICS), MASSIVE STARS, ASTROPHYSICS, EQUATIONS OF STATE,...

Partial Contents: Numerical Simulations of the Vlasov-Maxwell Equations by Coupled Particle-Finite Element Methods on Unstructured Meshes; Electromagnetic PIC Simulations Using Finite Elements on Unstructured Grids; Modelling Travelling Wave Output Structures with the Particle-in-Cell Code CONDOR; SST--A Single-Slice Particle Simulation Code; Graphical Display and Animation of Data Produced by Electromagnetic, Particle-in-Cell Codes; A Post- Processor for the PEST Code; Gray Scale Rendering of...

Topics: DTIC Archive, NAVAL RESEARCH LAB WASHINGTON DC, *SYMPOSIA, *PLASMAS(PHYSICS), *DIGITAL SIMULATION,...

Journal of Research of the National Bureau of Standards

Topics: Curve fitting, data analysis, equations of state, model discrimination, surface fitting

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285

May 22, 2011
05/11

by
NON

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Gimballed scanning devices or instruments are the subject of this invention. Scanning is an important aspect of space science. To achieve a scan pattern some means must be provided which impart to the payload an oscillatory motion. Various forms of machines have been employed for controllably conferring on scanning instruments predetermined scan patterns. They include control moment gyroscopes, reaction wheels, torque motors, reaction control systems, and the like. But rotating unbalanced mass...

Topics: CAVITATION FLOW, COMPUTATIONAL FLUID DYNAMICS, IMPELLERS, TURBINE PUMPS, BOUNDARY CONDITIONS,...

Transition metal complexes present interesting possibilities for the elucidation of the factors influencing the electrical conductivities of solids. This research is directed toward a better understanding of the process of electron transport in solids through studies of electrical properties of a series of related complexes.

Topics: DTIC Archive, ZWICKEL, A M, *COMPLEX COMPOUNDS, IRIDIUM, ELECTRICAL RESISTANCE, EQUATIONS OF STATE,...

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532

Jul 5, 2010
07/10

by
DUBROV, Y. A

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A FINITE SYSTEM, DEVELOPED BY THE AUTHOR, IS USED TO STUDY SOME PROBLEMS OF COMPLEX INFORMATION SYSTEMS. SIGNIFICANT ATTENTION IS DEVOTED TO QUESTIONS OF EQUIVALENT SYSTEM TRANSFORMATIONS, SINCE SUCH TRANSFORMATIONS MAKE IT POSSIBLE TO ELIMINATE STRUCTURAL AND FUNCTIONAL REDUNDANCY IN COMPLEX INFORMATION SYSTEMS.

Topics: AIRLINE OPERATIONS, ATMOSPHERIC TURBULENCE, HUMAN FACTORS ENGINEERING, PASSENGERS, APPLICATIONS OF...

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256

May 30, 2011
05/11

by
Zak, J. Allen; Rodgers, William G., Jr

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The Aircraft Vortex Spacing System (AVOSS), a set of algorithms to determine aircraft spacing according to wake vortex behavior prediction, requires turbulence profiles to appropriately determine arrival and departure aircraft spacing. The ambient atmospheric turbulence profile must always be produced, even if the result is an arbitrary (canned) profile. The original turbulence profile code was generated By North Carolina State University and used in a non-real-time environment in the past. All...

Topics: DYNAMICAL SYSTEMS, HUBBLE SPACE TELESCOPE, TRAJECTORIES, LIBRATION, EQUATIONS OF STATE,...

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378

Jul 21, 2010
07/10

by
NON

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Excerpts from a Governmental Investigation concerning Norwegian participation in the European Space Organization (ESA) is presented. The implications and advantages of such a move and a suggestion for the reorganization of Norwegian Aerospace activity is given.

Topics: COMPRESSIBILITY, ELASTOHYDRODYNAMICS, LUBRICANTS, SOLIDIFICATION, TEMPERATURE EFFECTS, EQUATIONS OF...

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144

Jul 26, 2010
07/10

by
Mccormick, Royce F.; Leighty, Bradley D

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The design of a portable Digital Pressure Indicator (DPI) to be used for calibrating the pressure systems on Langley's magnetic tape recorders is described. High-speed magnetic tape recorders require pressure (0 to 20 psig) for providing an air cushion across the tape guides and a slight vacuum (30 inch H2O) for maintaining the proper number of tape loops in the advance and feed chamber. The DPI is a hand-held device that can be quickly coupled to a magnetic tape recorder and includes a...

Topics: ISOTROPIC MEDIA, YIELD STRENGTH, STATE ESTIMATION, STRAIN HARDENING, THERMODYNAMICS,...

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95

Jun 2, 2011
06/11

by
Liang, Shoudan; Szallasi, Zultan; Fuhrman, Stefanie; Somogyi, Rolan

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A cell processes genetic information through transcription and translation of its genes. Understand- ing the organization of the genetic network and its minimum complexity requirement is among the important theoretical questions about the origins and evolution of life. With the advent of large-scale gene recognition techniques such as GeneChip and MicroArray, theoretical modeling of the genetic networks will also have applications in the biotechnology industry. address complex problems in the...

Topics: THERMODYNAMIC PROPERTIES, INTERPOLATION, EQUATIONS OF STATE, VAPORS, EIGENVECTORS, EIGENVALUES,...

Topics: DTIC Archive, Massey, J M, NAVAL WEAPONS LAB DAHLGREN VA, *EQUATIONS OF STATE, SHAPED CHARGES

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1.1K

Jul 11, 2010
07/10

by
ZALESAK, J

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A DYNAMIC SUBSTRUCTURING ANALYSIS, UTILIZING THE COMPONENT MODES TECHNIQUE, OF THE 1/8 SCALE SPACE SHUTTLE ORBITER FINITE ELEMENT MODEL IS PRESENTED. THE ANALYSIS WAS ACCOMPLISHED IN 3 PHASES, USING NASTRAN RIGID FORMAT 3, WITH APPROPRIATE ALTERS, ON THE IBM 360-370. THE ORBITER WAS DIVIDED INTO 5 SUBSTRUCTURES, EACH OF WHICH WAS REDUCED TO INTERFACE DEGREES OF FREEDOM AND GENERALIZED NORMAL MODES. THE REDUCED SUBSTRUCTURES WERE COUPLED TO YIELD THE FIRST 23 SYMMETRIC FREE-FREE ORBITER MODES,...

Topics: CONTROLLABILITY, LINEAR SYSTEMS, OPTIMAL CONTROL, CONTROL STABILITY, DECISION MAKING, EQUATIONS OF...

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244

Jun 18, 2010
06/10

by
Kazavchinskiy, Ya. Z

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Linear equation of state for real gas derived over wide range of density variation, including saturation curve and liquid phase region

Topics: EQUATIONS OF STATE, LINEAR EQUATIONS, LIQUID PHASES, REAL GASES, LINEAR EQUATION, REAL GAS, STATE...

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198

Jul 26, 2010
07/10

by
Phatak, Anil V.; Jain, Parveen; Palmer, Everet

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The objective of this research is to develop and test a cockpit procedural aid that can compose and present procedures that are appropriate for the given flight situation. The procedure would indicate the status of the aircraft engineering systems, and the environmental conditions. Prescribed procedures already exist for normal as well as for a number of non-normal and emergency situations, and can be presented to the crew using an interactive cockpit display. However, no procedures are...

Topics: AIRCRAFT INSTRUMENTS, REGULARITY, AUTOMATIC CONTROL, BOND GRAPHS, EXPERT SYSTEMS, MALFUNCTIONS,...

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242

Jun 15, 2011
06/11

by
Casasent, D

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Advanced problems in computational fluid dynamics, finite element structural analysis, and related areas require the solution of large partial differential equations and matrices of large size and dynamic range. This project considers an advanced parallel linear algebra processor and associated novel parallel algorithms for such applications. Research on system fabrication, quantitative performance evaluation and new parallel algorithms are described and considered. Case studies in structural...

Topics: FUEL CONSUMPTION, OPTIMAL CONTROL, POSITIONING, SPIN STABILIZATION, ALGORITHMS, BOUNDARY VALUE...

We have designed an experiment in which it appears that we can measure the pressure, volume, temperature, and electrical conductivity of a metal simultaneously. These data aid in the modeling of conductivity and equation-of-state relations for metals that are driven to extreme states, for example in z-pinches, imploding liners, or high-power electrical fuses. Recent advances in the technique of measuring the temperature of a surface with variable spectral emissivity can produce measurement...

Topics: DTIC Archive, CARE'N LLC TRACY CA, *ELECTRICAL CONDUCTIVITY, *MEASURING INSTRUMENTS, EQUATIONS OF...

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203

Jun 2, 2011
06/11

by
Dragovan, Mark, et al

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The DART is a system of two cylindrical-parabolic reflectors. One reflector will produce a line focus; two reflectors properly oriented will produce a point focus. For far-infrared/submillimeter missions, the DART presents a compelling new telescope architecture that is scalable to alrge apertures, and with it's large membrane area is well suited to passive cooling.

Topics: HYDRODYNAMICS, SPALLATION, ALUMINUM, IMPACT VELOCITY, COMPUTERIZED SIMULATION, MATHEMATICAL MODELS,...

Topics: DTIC Archive, RANDALL, R E, ARO INC ARNOLD AFS TN, *EQUATIONS OF STATE, *GASES, EQUATIONS,...

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593

Jun 21, 2010
06/10

by
Gause, R. L.; Gilstad, D. A.; Hyde, E. H.; Nevins, C. D.; Stuckey, J. M., et al

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Cryogenic technology research reviews at Marshall Space Flight Center

Topics: CHEMICAL EQUILIBRIUM, COMPUTER PROGRAMS, SHOCK TUBES, EQUATIONS OF MOTION, EQUATIONS OF STATE, FLOW...

Using density functional theory with empirical van der Waals corrections, cold pressure curves were calculated and combined with the quasi-harmonic approximation to study thermodynamical properties of several energetic molecular solids. Vibration spectra at each compression were calculated and used for including temperature and zero-point energy contributions to the free energy. Equilibrium properties at temperatures of experiments, as well as hydrostatic equations of state, specific heat...

Topics: DTIC Archive, NAVAL RESEARCH LAB WASHINGTON DC, *EQUATIONS OF STATE, DENSITY FUNCTIONAL THEORY,...

This report documents development of a computer-based equation of state (EOS) that covers the range of conditions from the air saturation line to beyond lunar reentry conditions. Efforts to ascertain the limits of accuracy of the EOS are also documented. The EOS is largely a computer-based version of the venerable AEDC Mollier Diagram for equilibrium air, c. 1967. The basis of this EOS is different from its predecessor, but the range of applicability is comparable and the purpose is the same....

Topics: DTIC Archive, AEROSPACE TESTING ALLIANCE (ATA) ARNOLD AFB TN, *EQUATIONS OF STATE, AIR, CHEMICAL...

Topics: DTIC Archive, Kazavchinskiy, Ya Z, JOINT PUBLICATIONS RESEARCH SERVICE ARLINGTON VA, *THERMODYNAMIC...

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392

Jun 9, 2011
06/11

by
Levine, Joel S

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Biomass burning is a source of greenhouse gases, carbon dioxide, methane, and nitrous oxide. In addition, biomass burning is a source of chemically active gases, including carbon monoxide, nonmethane hydrocarbons, and nitric oxide. These gases, along with methane, lead to the chemical production of tropospheric ozone (another greenhouse gas) as well as control the concentration of the hydroxyl radical, which regulates the lifetime of almost every atmospheric gas. Following biomass burning,...

Topics: EQUATIONS OF STATE, SENSITIVITY ANALYSIS, HEAT TRANSFER, FINITE ELEMENT METHOD, TIME MARCHING,...

This report is an effort to collect under one cover the existing theory of three continuous zone refining systems; the zone-void system, the zone-transport system and the matter transport system. The steady-state equations which describe these systems are derived using consistent terminology and under boundary conditions which account for the density change due to melting. The newly developed nondimensional steady-state equations are also derived and the results of an extensive computer study...

Topics: DTIC Archive, AIR FORCE CAMBRIDGE RESEARCH LABS HANSCOM AFB MA, *REFINING, DENSITY, EQUATIONS OF...

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249

May 22, 2011
05/11

by
Peng, Xiaochang Jeff; Ruyten, Wilhelmus M.; Keefer, Denni

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We present further numerical results of our particle-in-cell/Monte Carlo calculations of accelerator grid erosion in an ion thruster. Comparison between numerical and experimental results suggests that the accelerator grid impingement is primarily due to ions created far downstream from the accelerator grid. In particular, for the same experimental conditions as those of Monheiser and Wilbur at Colorado State University, we find that a downstream plasma density of 2 x 10(exp 14) m(exp -3) is...

Topics: COMPRESSORS, STEADY STATE, COMPUTERIZED SIMULATION, DYNAMIC RESPONSE, MATHEMATICAL MODELS,...

The study of glasses under pressure has been extremely rewarding insofar as the conventional (oxide) glasses are concerned. The study of semiconducting glasses has only begun. The project is concerned with the correlation of electrical properties with the thermodynamic state of the system. It hopes to identify the electrical conduction mechanism and to determine the equation of state. The former will permit the better utilization of these materials in electronic devices and the latter will...

Topics: DTIC Archive, Thompson, James C, TEXAS UNIV AT AUSTIN, *SEMICONDUCTORS, ARSENIC ALLOYS, ELECTRICAL...

The physics of the Gruneisen parameter for solids is investigated from the view of conceptual and physical contributions. The relatively simple physics of a van der Waal's gas is applied to solid densities yielding a Gruneisen gamma approximately equal to 2. The separate electron and phonon contributions for metals are considered, and it is shown that except for very high and very low temperatures the phonon contribution dominates. Procedures for evaluating gamma from shock-Hugoniot data for...

Topics: DTIC Archive, Harris, Paul, PICATINNY ARSENAL DOVER NJ, *EQUATIONS OF STATE, ELECTRONS, GASES,...

Topics: DTIC Archive, OFFICE OF NAVAL RESEARCH ARLINGTON VA, *DETONATIONS, *EXPLOSIVES, DETONATION WAVES,...

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462

Jul 5, 2010
07/10

by
Young, L. R

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No Abstract Available

Topics: GAS-LIQUID INTERACTIONS, GRAPHS (CHARTS), LIQUID ROCKET PROPELLANTS, PRESSURIZING, ROCKET...

This paper reports on research activities developed during the first year of this project. The main tasks accomplished and reported in this paper are: a) the development of new computational equation of state (EOS) for granite. One-dimensional calculations using this EOS captures the first principles physics of the near source region and identifies the critical material properties for cavity dynamics. Cavity dynamics are an important consideration for methods that are used to determine accurate...

Topics: DTIC Archive, LOS ALAMOS NATIONAL LAB NM, *COMPUTERIZED SIMULATION, *GRANITE, CAVITIES, DYNAMICS,...

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433

Jul 6, 2010
07/10

by
POPOVICH, L. V

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THE APPLICATION OF AN AVERAGING METHOD FOR SOIL TEMPERATURE DETERMINATION FROM ATMOSPHERIC TEMPERATURE AND HUMIDITY VALUES IS DISCUSSED. CALCULATIONS ARE MADE AND GRAPHS AND CHARTS ARE COMPILED FOR USE IN DETERMINING SOIL TEMPERATURE AT A DEPTH OF 5 CM UNDER NATURAL COVER.

Topics: EQUATIONS OF STATE, THERMODYNAMIC PROPERTIES, GAS DYNAMICS, GAS EXPANSION, JOULE-THOMSON EFFECT,...

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218

Jul 12, 2010
07/10

by
Shieh, C. F.; Frost, W

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Atmospheric motion over obstacles on plane surfaces to compute simulated wind fields over terrain features was studied. Semielliptical, two dimensional geometry and numerical simulation of flow over rectangular geometries is also discussed. The partial differential equations for the vorticity, stream function, turbulence kinetic energy, and turbulence length scale were solved by a finite difference technique. The mechanism of flow separation induced by a semiellipse is the same as flow over a...

Topics: CRITICAL POINT, VISCOSITY, EQUATIONS OF STATE, LIQUID-VAPOR INTERFACES, THERMODYNAMICS, TRANSPORT...

Pressure, volume, and energy equation of state data obtained using shock wave techniques are presented for aluminum and Teflon. Solid aluminum samples initially at room temperature or preheated to near melting, and porous aluminum samples at room temperature, were studied over a pressure range of 200 to 1200 kbar. It was found that the largest variations of volume and energy could be achieved using porous samples. Values of Gruneisen's ratio estimated from values of the thermal pressure and...

Topics: DTIC Archive, STANFORD RESEARCH INST MENLO PARK CA, *ALUMINUM, *EQUATIONS, *HALOCARBON PLASTICS,...

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536

Jun 21, 2010
06/10

by
Balzer, D. L.; Barksdale, T. R.; Bowman, T. E.; Gilmore, D. E.; Gorman, D. N.; Hise, R. E., et al

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Detail design for advanced propellant management system for spacecraft propulsion systems

Topics: COLLAPSE, SIMPLIFICATION, CYLINDRICAL BODIES, DIFFERENTIAL EQUATIONS, SIMILARITY THEOREM,...

A simple model for dissociation of diatomic molecules was implemented in the equation of state which is currently in use in the 'FAST' code at NRL. Hugoniot curve, obtained with this equation of state is compared with experimental results.

Topics: DTIC Archive, Gardner, John H., NAVAL RESEARCH LAB WASHINGTON DC, *DIATOMIC MOLECULES, COMPUTER...

On the hypothesis of thermal initiation and estimates of the absolute rate constant and free energy of activation of the explosion reaction, the width of the reaction zone in a detonation wave, both in the homogeneous case and in the heterogeneous case, in which evaporation is the rate-determining step, is calculated. The distribution of temperature and pressure within a detonation wave, and the effect of these variables upon the rate of chemical decomposition reaction, are studied in an...

Topics: DTIC Archive, Parlin, Ransom B, PRINCETON UNIV NJ, *DETONATION WAVES, CHEMICAL REACTIONS, EQUATIONS...

The Jones-Wilkins-Lee-Baker (JWLB) equation of state was developed to more accurately describe overdriven detonation, while maintaining an accurate description of high explosive products expansion work output. The increased mathematical complexity of the JWLB high explosive equations of state provides increased accuracy for practical problems of interest. Increased numbers of parameters is often justified based on improved physics descriptions, but can also mean increased calibration...

Topics: DTIC Archive, ARMY ARMAMENT RESEARCH DEVELOPMENT AND ENGINEERING CENTER PICATINNY ARSENAL NJ...

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148

Jul 11, 2010
07/10

by
GUSAK, Y. M.; DYBAN, Y. P.; KOLESNICHENKO, A. F.; MOKRUSHIN, S. A.; STRADOMSKIY, M. V

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THEORETICAL AND EXPERIMENTAL DATA ON ROTORS OF SMALL TURBINES OF THE TYPE USED IN SUPERCHARGERS OF INTERNAL COMBUSTION ENGINES ARE EXAMINED AND GENERALIZED. ENGINEERING METHODS OF CALCULATING THE THERMAL AND STRESSED STATES OF ROTORS WITH DIFFERENT TYPES OF COOLING ARE PROPOSED.

Topics: ATTITUDE INDICATORS, REYNOLDS NUMBER, HIGH ALTITUDE BALLOONS, MATHEMATICAL MODELS, AERODYNAMIC...

A technique was developed for measuring the elevated-temperature tensile properties of materials following 'instantaneous' in-depth heating. High-energy pulsed electron beams are used to heat specimens to the required temperature in approximately 0.08 microsec, and a Hopkinson bar-type device, in a tensile configuration, is used to perform the mechanical tests at any desired time after irradiation. Data on the temperature-induced degradation of the Young's Modulus and the yield stress of...

Topics: DTIC Archive, Stefansky, Tibor, PHYSICS INTERNATIONAL CO SAN LEANDRO CA, *NONDESTRUCTIVE TESTING,...

A combined experimental and theoretical investigation of the radiation-induced impulse and stress generation characteristics of aluminum has been carried out for cases where a significant portion of the blowoff material was in the liquid-vapor state. Intense pulsed electron beams were used as a source of rapid (50 nsec) high-energy-density loading to produce mixed-phase effects in aluminum. Impulse measurements were obtained with a ballistic pendulum for peak doses of up to 3800 cal/gm....

Topics: DTIC Archive, PHYSICS INTERNATIONAL CO SAN LEANDRO CA, *ALUMINUM, *EQUATIONS OF STATE,...

This report results from a contract tasking University of Cassino as follows: The contractor shall investigate the behavior of ductile metals under high strain rates at various temperatures. The contractor shall produce a new advanced model for predicting ductile failure in metals using continuum mechanics and solid state equations.

Topics: DTIC Archive, Bonora, Nicola, CASSINO UNIV (ITALY), *CONTINUUM MECHANICS, METALS, ALLOYS, STRAIN...