3 edition of Water drop deformation and fragmentation due to shock wave impact. found in the catalog.
Written in English
|The Physical Object|
|Pagination||xii, 81 leaves.|
|Number of Pages||81|
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 August , in 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: In , he 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: ()
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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 Water drop deformation and fragmentation due to shock wave impact.
book 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 , Ranger and Nicolls , Wierzba and Takayama , Joseph et al. , Igra and Takayama , and Theofanous and Li ).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 . 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. F. 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. M. Drop deformation and breakup due to shock wave and steady disturbances.
Intl J Cited by: in Fig. 3. 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: