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Thursday, April 30, 2020 | History

3 edition of Water drop deformation and fragmentation due to shock wave impact. found in the catalog.

Water drop deformation and fragmentation due to shock wave impact.

  • 287 Want to read
  • 8 Currently reading

Published .
Written in English

    Subjects:
  • Drops.,
  • Shock waves.

  • The Physical Object
    Paginationxii, 81 leaves.
    Number of Pages81
    ID Numbers
    Open LibraryOL23419905M
    OCLC/WorldCa18218572

    The efficacy of extracorporeal shock wave lithotripsy (ESWL) can be increased by lowering the pulse rate to 60–80 shock waves/min and by ramping the shock wave energy. With the water cushion, the quality of coupling has become a critical factor that depends on the amount, viscosity, and temperature of the by: Mazumdar, Yi Chen, DeMauro, Edward Paisley, Wagner, Justin, Arienti, Marco, Guildenbecher, Daniel Robert, Farias, Paul Abraham, & Grasser, Thomas W. Aerodynamic Breakup and Secondary Drop Formation for a Liquid Metal Column in a Shock .


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Water drop deformation and fragmentation due to shock wave impact. by William Edward Krauss Download PDF EPUB FB2

Tableofcontents page acknowledgements iii listoftables v listoffigures vi nomenclature ix abstract xii chapters i. introduction 1 mentalinvestigation 5 13 sionofresults 23 sions 27 appendices.

Three test facilities were used, as follows: a shock tube facility for measurements of effects of shock wave disturbances on drops in gases, a 10 m high drop tube facility for measurements of effects of steady disturbances on drops in gases and a 1 m high drop tube facility for measurements of effects of steady disturbances on drops in by: Abstract.

Most of the investigations on shock wave interacting with a liquid droplet in literature have been on the breakup/shattering of the droplet (Engel [1], Ranger and Nicolls [2], Wierzba and Takayama [3], Joseph et al.

[4], Igra and Takayama [5], and Theofanous and Li [6]).Author: S. Sembian, M. Liverts, N. Tillmark, N. Apazidis.

A complex system of waves propagating inside a water column due to the impact of plane shock wave is investigated both experimentally and numerically. Shock Waves in Condensed Matter – covers the proceedings of the American Physical Society Topical Conference, held in Santa Fe, New Mexico on JulyThe book focuses on the response of matter to dynamic high pressure and Edition: 1.

The double-mass model of drop deformation and secondary breakup. Applied Mathematical Modelling, Vol. 37, No. The Behaviors of a Drop in Ambient Liquid under a Sudden Impact. Interactions between two deformable droplets in tandem subjected to impulsive acceleration by surrounding by: Often, the ov\!rall objective of investigation of dynamic fracture and fragmentation phenomena is provision of a means for predicting the entire course of an event that begins with a stimulus such as an impact and proceeds through a complicated deformation and fracture pro­ cess that results in disintegration of the body and formation of a.

confined in capillary channels [], and deformation and fragmentation of sessile and mobile liquid droplets induced by laser pulses []. The latter phenomena attracted an increasing attention of researchers in the recent years [].The current demand for understanding of the liquid drop deformation by laser pulse impact is.

Shock wave research on water specifically dates back to a little over five decades ago [2]. There is interest in the health field, defense industry, and planetary sciences to understand the effects of shocking water.

Shock waves have even been used to purify water Author: Emilie Maria Teitz. with ⌧ c the capillary time) after the pulse, a shock wave has propagated in the air and a mist cloud has developed at the drop surface, but the drop itself has not yet mo ved.

(b – d) t = 1. Shock wave consolidation is not precise and the compacts have considerable residual strain. A related idea is dynamic compaction. It is used for combinations of synthesis and densification. Generally a delay of a few seconds between reaction initiation and densification.

A free falling, absorbing liquid drop hit by a nanosecond laser pulse experiences a strong recoil pressure kick. As a consequence, the drop propels forward and deforms into a thin sheet which eventually fragments. We study how the drop deformation depends on the pulse shape and drop by:   An early stage of the drop interaction with shock wave: airflow, deformation, destruction 20 November | Journal of Physics: Conference Series, Vol.

Density contrast matters for drop fragmentation thresholds at low Ohnesorge numberCited by: breakup regime map for shock wave disturbances at large Oh. Other issues considered involved factors influencing drop deformation and shape, emphasizing effects of the dispersedhontinuous phase density ratio, and the relationship between drop drag and deformation in various environments.

The drop dynamics for di erent pulse energies is shown in Fig On impact, the surface of the drop hit by the laser emits a shock wave into the air (Fig.3b).

The shock wave is followed by the ejection of a mist cloud of small drops that is visible as a gray-to-black haze in the images and persists for several microseconds. Subsequently, theFile Size: 6MB. His dissertation was "Water Drop Deformation and Fragmentation Due to Shock Wave Impact." He worked on the design of the Apollo spacecraft heat shield and retired from the Gas Research Institute.

Hypervelocity impacts cause significant heating of planetary bodies. Such events are recorded by a reset of 40 Ar‐ 36 Ar ages and/or impact melts.

Here we investigate the influence of friction and plastic deformation in shock‐generated comminuted rocks on the degree of impact heating using the iSALE shock‐physics by:   A series of low stress shock impact experiments were performed on water to examine the dynamic response under tension and establish a lower bound for water rupture or cavitation threshold.

The experimental cell configuration permitted particle velocity measurements at the water-air free surface separated by a 5-μm-thick aluminized Mylar by: As the Weber number increases, the drop deformation upon impact also increases.

The drop deformation pattern can be split up into regimes based on the Weber number. At We deformation. For We on the order of 1, the drop experiences significant deformation, and flattens somewhat on the surface.

When We ~ 4, waves. The paper reports on the deformation and fracture of four rock materials and two cementitious materials due to the impingement of simulated liquid drops at velocities up to m/s. For hard materials, the damage appeared in the form of an undamaged central region surrounded by rings of discrete by: if two shock waves approach each other and are parallel (1-D interaction), then after they collide, the outgoing waves must be shock waves.

However, if two such shock waves interact by one overtaking the other, then the outgoing waves can be either a pair of shock waves or a shock wave and an expansion 2 L.

HendersonFile Size: KB. On the instability of a free viscous rim - Volume - ILIA V. ROISMAN Modeling of high-velocity impact ejecta by experiments with a water drop impacting on a water surface.

Acta Mechanica, Vol. Issue. 10, p. Hsiang, L.-P. & Faeth, G. Drop deformation and breakup due to shock wave and steady disturbances. Intl J Cited by: in Fig. On impact, the surface of the drop hit by the laser emits a shock waveinto the air [Fig.

3(b)]. The shock wave is followed by the ejection of a mist cloud of small drops that is visible as a gray-to-black haze in the images and persists for several microseconds.

Subsequently, the mist is expelled while the drop propels in the Cited by: William Edward Krauss has written: 'Water drop deformation and fragmentation due to shock wave impact' -- subject- s -: Drops, Shock waves Asked in Judaism, Authors, Poets, and Playwrights, Passover.

This book presents a set of basic understandings of the behavior and response of solids to propagating shock waves.

The propagation of shock waves in a solid body is accompanied by large compressions, decompression, and shear.

Thus, the shear strength of solids and any inelastic response due to shock­ wave propagation is of the utmost importance. EXPLOSIVE BLAST EXPLOSIVE BLAST for explosions in confined spaces. As the shock wave expands, pressures decrease rapidly (with the cube of the distance) because of geometric divergence and the dissipation of energy in heating the air.

Pressures also decay rapidly over time (i.e., exponentially). • From shock waves created by impact or other loadings • Resulting in deformation and material failure Implicit Solution (Structural Dynamics, aka Mechanical).

explosive blast. BLAST EFFECTS. An explosion is an extremely rapid release of energy in the form of light, heat, sound, and a shock wave.

A shock wave consists of. highly compressed air traveling radially outward from the source at supersonic velocities. As the shock wave. These proceedings of EXPLO the International Conference on the Materials Effects of Shock-Wave and High-Strain-Rate Phenomena, held Augustin La Jolla, California, represent a global and up-to-date appraisal of this field.

Contributions (more than ) deal with high-strain-rate deforma. Stress Wave Propagation in Solids That Are Not Perfectly Elastic: Shock and Plastic Waves.

The elastic contact impact model can be extended to the cases where the plastic deformation occurs in a contained area. The force–deformation equation is often modified by adding a damping term to reflect dissipation in the contact area, thus al-Cited by:   Inhe earned his PhD in Aerospace Engineering.

His dissertation was "Water Drop Deformation and Fragmentation Due to Shock Wave Impact." He worked on the design of the Apollo spacecraft heat shield and retired from the Gas Research Institute in Chicago Phone: () Heymann F J On the shock wave velocity and impact pressure in high-speed liquid-solid impact J.

Basic Eng. 90 Crossref Google Scholar Heymann F J High-speed impact between a liquid drop and a solid surface J. Appl. Phys. 40 (13) Experiment on the droplet deformation and breakup is performed in high-speed flow passaged by shock wave.

Vibration deformation, shear stripping breakup and catastrophic breakup are obtained in the droplet breakup experiment. The deformation and breakup of droplet are recorded by high-speed photography. The morphologies of droplet in different breakup modes Cited by: 1.

Example of Shock Wave Effects For example, miles ( km) away from a 10 kiloton blast, the air pressure could exert a force in excess of 5 pounds per square inch (psi). This 5 psi ( kg/cm 2) "overpressure" is the same as a force of over tons (, kg) slamming against the side of a typical two-story house.

FORMATION AND PROPAGATION OF A SHOCK WAVE FROM A CONCAVE BOUNDARY by Dudley G. McConnell National Aeronautics and Space Administration SUMMARY This report shows when and where a shock wave forms in a two-dimensional flow field and presents a method for predicting the shape and strength of the shock wave.

Knowledge of the point of formation, the strength, and the shape of shock waves File Size: KB. Blast wave in-stantaneously increases to a value of pressure above the ambient atmospheric pressure. This is referred to as the side-on overpressure that decays as the shock wave expands outward from the explosion source.

After a short time, the pressure behind the front may drop below the ambient pressure (Figure 1). DuringCited by: •Fracture and fragmentation – Natural fragmentation model Detonation/deflagration •High Explosives (HE) •Slow burning propellants and pyrotechnics Ignition and growth model •determine conditions under which explosives might detonate sympathetically as a consequence of impact.

Start studying Trauma Overview: The Trauma Patient and the Trauma System. Learn vocabulary, terms, and more with flashcards, games, and other study tools. rotational impact. fragmentation. cavitation. The path or motion of a projectile during its travel is called A.

and you suspect is in shock due to bleeding into the GI tract B. Fragmentation of Rings and Shells: The Legacy of N.F. Mott (Shock Wave and High Pressure Phenomena) [Grady, Dennis] on *FREE* shipping on qualifying offers. Fragmentation of Rings and Shells: The Legacy of N.F.

Mott (Shock Wave Cited by: @article{osti_, title = {Local inertial effects in dynamic fragmentation}, author = {Grady, D.E.}, abstractNote = {A general definition of dynamic fragmentation can encompass any impulsive process which partitions a body of material into discrete domains.

Two examples are fragmentation due to brittle fracture under impact loading and fragmentation due to shear banding in shock. In the model, I'm using C3d8R elements with a fixed boundary condition around the edges. For the shock wave, I am specifying a pressure history at a source node and am using a planar wave for now.

My problem is that I'm not getting much deformation from a pressure wave with a peak pressure of 16 MPa.impact of a water drop on a cold solid substrate. We show for the first time that, as a function of the substrate temperature, the crack patterns produced by the thermal shock change from a 2D fragmentation regime to a hierarchical fracture regime [Fig.

2(a)]. The experimental setup consists of releasing a drop of.Krauss, Dr. William Bill Dr. William "Bill" Edward Krauss, age Beloved husband, father, grandfather and brother, peacefully passed away Friday, Ma He was born in Cleveland, Ohio on.