Dissertations / Theses on the topic 'Shock wave'
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Owen, Neil R. "Targeting of stones and identification of stone fragmentation in shock wave lithotripsy /." Thesis, Connect to this title online; UW restricted, 2007. http://hdl.handle.net/1773/5895.
Full textBourne, Neil Kenneth. "Shock wave interactions with cavities." Thesis, University of Cambridge, 1990. https://www.repository.cam.ac.uk/handle/1810/250963.
Full textLennon, Francis. "Shock wave propagation in water." Thesis, Manchester Metropolitan University, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.240559.
Full textWeaver, P. M. "Shock wave interactions with aqueous foams." Thesis, University of Southampton, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.292434.
Full textKasiraj, Prakash. "Shock-wave consolidation of metallic powders." Diss., Pasadena, Calif. : California Institute of Technology, 1985. http://resolver.caltech.edu/CaltechETD:etd-09202002-161800.
Full textKrueger, Barry Robert Vreeland Thad. "Shock-wave processing of powder mixtures /." Diss., Pasadena, Calif. : California Institute of Technology, 1991. http://resolver.caltech.edu/CaltechETD:etd-06222007-081112.
Full textSanderson, Simon R. "Shock wave interaction in hypervelocity flow /." Web site:, 1995. http://etd.caltech.edu/etd/available/etd-11092004-094744/.
Full textMutz, Andrew Howard Vreeland Thad. "Heterogeneous shock energy deposition in shock wave consolidation of metal powders /." Diss., Pasadena, Calif. : California Institute of Technology, 1991. http://resolver.caltech.edu/CaltechETD:etd-06282007-091349.
Full textFu, Y. "Propagation of weak shock waves in nonlinear solids." Thesis, University of East Anglia, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.384589.
Full textLloyd, Alan. "Performance of reinforced concrete columns under shock tube induced shock wave loading." Thesis, University of Ottawa (Canada), 2010. http://hdl.handle.net/10393/28510.
Full textJamaluddin, Ahmad Riza. "Free-Lagrange simulations of shock-bubble interaction in extracorporeal shock wave lithotripsy." Thesis, University of Southampton, 2005. https://eprints.soton.ac.uk/47507/.
Full textSondén, Anders. "Shock wave effects on the vascular endothelium /." Stockholm, 2002. http://diss.kib.ki.se/2002/91-7349-183-7/.
Full textCrossley, Peter Simon. "On spectral methods for shock wave calculations." Thesis, Manchester Metropolitan University, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.361577.
Full textTouber, Emile. "Unsteadiness in shock-wave/boundary layer interactions." Thesis, University of Southampton, 2010. https://eprints.soton.ac.uk/161073/.
Full textSchilling, Mark Wesley. "Hydrodynamic Shock Wave Effects on Protein Functionality." Thesis, Virginia Tech, 1999. http://hdl.handle.net/10919/35132.
Full textMaster of Science
Kessaratikoon, Prasong. "Shock wave dispersion in weakly ionized gas /." Connect to this resource. (Authorized users only), 2003.
Find full textMontilla, Karina L. "Shock wave processing of transitional metal silicides." Diss., Pasadena, Calif. : California Institute of Technology, 1998. http://resolver.caltech.edu/CaltechETD:etd-09202002-154801.
Full textLokhandwalla, Murtuza Sturtevant Bradford. "Damage mechanisms in shock wave lithotripsy (SWL) /." Diss., Pasadena, Calif. : California Institute of Technology, 2001. http://resolver.caltech.edu/CaltechETD:etd-03162005-130412.
Full textMasse, Robert K. "Fluid dynamics of the shock wave reactor /." Thesis, Connect to this title online; UW restricted, 2000. http://hdl.handle.net/1773/9961.
Full textWolfrum, Bernhard. "Cavitation and shock wave effects on biological systems." Doctoral thesis, [S.l.] : [s.n.], 2004. http://deposit.ddb.de/cgi-bin/dokserv?idn=971895082.
Full textDominy, Robert Gerald. "Rarefied hypersonic shock wave and blunt body flows." Thesis, Imperial College London, 1988. http://hdl.handle.net/10044/1/47034.
Full textLang, Ruitian. "Propagation of gravitons in the shock wave geometry." Thesis, Massachusetts Institute of Technology, 2009. http://hdl.handle.net/1721.1/51580.
Full textIncludes bibliographical references (p. 51).
In this thesis, I study propagation of gravitons in the shock wave geometry in the context of the AdS/CFT correspondence, with the goal to uncover some constraint on the supergravity action in the AdS space. In studying the shock wave geometry in an anti-deSitter (AdS) space, I find that the functional form of the shock wave metric does not receive a' correction, but the wave profile does. Then I study the propagation of gravitons in the shock wave geometry and show that the wave function has a finite jump at the shock wave frontier, and this corresponds to a shift in position of the graviton in the semi-classical picture.
by Ruitian Lang.
S.B.
Pavlov, Atanas (Atanas Ivanov). "Needle-free drug delivery using shock wave techniques." Thesis, Massachusetts Institute of Technology, 2006. http://hdl.handle.net/1721.1/36245.
Full text"June 2006."
Includes bibliographical references (leaves 93-94).
A recent advancement in the area of needle-free injection systems has been the development of devices capable of epidermal delivery of powder medications. These devices use high-pressure compressed gas to accelerate drug particles 2 to 50 gpm in size to velocities of 200 to 1000 m/s. At these speeds the particles have sufficient momentum to penetrate the skin barrier and reach the viable epidermal layers. The devices offer much better control over the depth of penetration than traditional hypodermic needles, a factor particularly important in vaccine delivery. However they still have not found wide spread use, because of their cost. We studied the parameters determining the performance of these devices and used that knowledge to create a simple and reusable device capable of delivering 3 to 10 mg of powder formulation to the viable epidermis. Furthermore we showed that hydrogen-oxygen combustion could be used to create the shock wave required to accelerate the drug particles. This proves that portable reusable devices powered by hydrogen can be constructed and used for vaccine and medication delivery.
by Atanas Pavlov.
S.M.
Nwokeoha, Sandra. "Lithotripter shock wave induced RNA-based gene therapy." Thesis, University of Oxford, 2017. https://ora.ox.ac.uk/objects/uuid:89b67c7d-4b1c-4254-8e10-86a8e6c6c79d.
Full textMeek, Kimberly I. "Hydrodynamic Shock Wave: Decreasing Broiler Breast Aging Time." Thesis, Virginia Tech, 1997. http://hdl.handle.net/10919/36505.
Full textMaster of Science
Teitz, Emilie Maria. "Characterization of the Shock Wave Structure in Water." Thesis, Marquette University, 2017. http://pqdtopen.proquest.com/#viewpdf?dispub=10267152.
Full textThe scientific community is interested in furthering the understanding of shock wave structures in water, given its implications in a wide range of applications; from researching how shock waves penetrate unwanted body tissues to studying how humans respond to blast waves. Shock wave research on water has existed for over five decades. Previous studies have investigated the shock response of water at pressures ranging from 1 to 70 GPa using flyer plate experiments. This report differs from previously published experiments in that the water was loaded to shock pressures ranging from 0.36 to 0.70 GPa. The experiment also utilized tap water rather than distilled water as the test sample.
Flyer plate experiments were conducted in the Shock Physics Laboratory at Marquette University to determine the structure of shock waves within water. A 12.7 mm bore gas gun fired a projectile made of copper, PMMA, or aluminum at a stationary target filled with tap water. Graphite break pins in a circuit determined the initial projectile velocity prior to coming into contact with the target. A Piezoelectric timing pin (PZT pin) at the front surface of the water sample determined the arrival of the leading wave and a Photon Doppler Velocimeter (PDV) measured particle velocity from the rear surface of the water sample. The experimental results were compared to simulated data from a Eulerian Hydrocode called CTH [1]. The experimental results differed from the simulated results with deviations believed to be from experimental equipment malfunctions. The main hypothesis being that the PZT pin false triggered, resulting in measured lower than expected shock velocities. The simulated results were compared to published data from various authors and was within range.
Boey, Chung Wai. "Investigation of shock wave attenuation in porous materials." Thesis, Monterey, California : Naval Postgraduate School, 2009. http://edocs.nps.edu/npspubs/scholarly/theses/2009/Dec/09Dec%5FBoey.pdf.
Full textThesis Advisor(s): Hixson, Robert S. Second Reader: McNelley, Terry. "December 2009." Description based on title screen as viewed on January 27, 2010. Author(s) subject terms: Porous foams, dynamic compaction, multi-layered armor, ballistic performance, shock wave attenuation. Includes bibliographical references (p. 89-90). Also available in print.
Nelsen, Cory. "Multiscale modeling and simulation of shock wave propagation." Thesis, University of Iowa, 2013. https://ir.uiowa.edu/etd/2591.
Full textBurrell, Russell P. "Performance of Steel Fibre Reinforced Concrete Columns under Shock Tube Induced Shock Wave Loading." Thesis, Université d'Ottawa / University of Ottawa, 2012. http://hdl.handle.net/10393/23516.
Full textFox, Thomas Edward. "Strong shock wave generation by fast electron energy deposition in shock ignition relevant plasmas." Thesis, University of York, 2014. http://etheses.whiterose.ac.uk/6625/.
Full textArmstrong, Jonathan. "Design of a Free Field Blast Simulating Shock Tube." Thesis, Université d'Ottawa / University of Ottawa, 2015. http://hdl.handle.net/10393/32241.
Full textBrahmi, Nassim. "Etude numérique de la propagation et l’atténuation des ondes de choc en milieux confinés Turbulent structures of shock-wave diffraction over 90° convex corner Analysis of shock-wave diffraction over double concave cylindrical wedges. Part I: Shock dynamics Analysis of shock-wave diffraction over double cylindrical wedges. Part II: Vorticity generation Achieving an optimal shock-wave mitigation inside open channels with cavities for weak shock waves: a computational study." Thesis, Normandie, 2020. http://www.theses.fr/2020NORMIR09.
Full textThe propagation of shock waves involves complex interactions between waves and surrounding media, which gives rise to several phenomena such as reflection, diffraction, etc. To shed more light into the fundamental physics associated with these phenomena, high resolution numerical simulations were carried out. In particular, analysis of shock diffraction over double concave cylindrical wedges revealed that the transition angles, from regular to Mach reflection, increase with the Mach number, whereas they are found to be almost the same over the two concave surfaces for the transonic Mach regimes and relatively larger on the second surface for high ones showing that the flow is capable of retaining the memory of the past events over the entire process for the high Mach numbers. The analysis of the vorticity equation balance showed, for the first time, that the diffusion of the vorticity due to the viscous effects is quite important compared to the baroclinic term for low Mach numbers, while this trend is inverted for higher Mach numbers. The study also showed that the stretching of the vorticity due to the compressibility effects plays an important role in the vorticity production. On the basis of these numerical simulations, an approximate universal relation is proposed, allowing to predict the incident-shock trajectory and velocity as a function of the incident-shock Mach number, the radius of curvature of the geometry, and the gas properties. Afterward, the study of shock-waves propagation and their attenuation in channel flow having different heights and exhibiting a hollow circular cavities with different depths has been clone. The results also showed the importance of reducing the height of the channel and changing the position of the reduced section in addition to the diffraction angle and the cavity depth for better shock-waves attenuation. A subtle arrangement of channel position/height and a cavity location/depht was found
OHSAWA, YUKIHARU, K. KATO, and H. HASEGAWA. "Simulation studies of positron acceleration by a shock wave." Cambridge University Press, 2006. http://hdl.handle.net/2237/10301.
Full textCollie, Jeffery C. "Unsteady shock wave effects on transonic turbine cascade performance." Thesis, This resource online, 1991. http://scholar.lib.vt.edu/theses/available/etd-08182009-040404/.
Full textBadr, Mohammad Ali. "Shock wave turbulent boundary layer interaction over a protrusion." Thesis, Wichita State University, 2011. http://hdl.handle.net/10057/3942.
Full textThesis (M.S.)--Wichita State University, College of Engineering, Dept. of Aerospace Engineering
Bessho, Naoki, and Yukiharu Ohsawa. "Electron acceleration and trapping by an oblique shock wave." American Institute of Physics, 2002. http://hdl.handle.net/2237/7093.
Full textGibson, Thomas Mark. "The passive control of shock-wave/boundary-layer interactions." Thesis, University of Cambridge, 1997. https://www.repository.cam.ac.uk/handle/1810/272691.
Full textAlamri, Sagr Mubarak. "SHOCK MITIGATION AND WAVE CONTROL USING ELASTIC METAMATERIAL STRUCTURES." University of Akron / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=akron154177943169993.
Full textGongora, Orozco Nalleli. "Experimental studies on internal shock wave phenomena and interactions." Thesis, University of Manchester, 2010. https://www.research.manchester.ac.uk/portal/en/theses/experimental-studies-on-internal-shock-wave-phenomena-and-interactions(6325f185-76a1-483a-9d14-606a6a48374e).html.
Full textTanguay, Michel Colonius Timothy E. "Computation of bubbly cavitating flow in shock wave lithotripsy /." Diss., Pasadena, Calif. : California Institute of Technology, 2004. http://resolver.caltech.edu/CaltechETD:etd-05282004-130028.
Full textGrossman, Ilan Jesse. "Effect of confinement on shock wave-boundary layer interactions." Thesis, Imperial College London, 2017. http://hdl.handle.net/10044/1/47924.
Full textKracht, Jonathan M. "Trading kidney stones with sound during shock wave lithotripsy." Thesis, Boston University, 2013. https://hdl.handle.net/2144/12800.
Full textThe prevalence of kidney stones has increased significantly over the past decades. One of the primary treatments for kidney stones is shock wave lithotripsy which focuses acoustic shock waves onto the stone in order to fragment it into pieces that are small enough to pass naturally. This typically requires a few thousand shock waves delivered at a rate of about 2 Hz. Although lithotripsy is the only non-invasive treatment option for kidney stones, both acute and chronic complications have been identified which could be reduced if fewer shock waves were used. One factor that could be used to reduce the number of shock waves is accounting for the motion of the stone which causes a portion of the delivered shock waves to miss the stone, yielding no therapeutic benefit. Therefore identifying when the stone is not in focus would allow tissue to be spared without affecting fragmentation. The goal of this thesis is to investigate acoustic methods to track the stone in real-time during lithotripsy in order to minimize poorly-targeted shock waves. A relatively small number of low frequency ultrasound transducers were used in pulse-echo mode and a novel optimization routine based on time-of-flight triangulation is used to determine stone location. It was shown that the accuracy of the localization may be estimated without knowing the true stone location. This method performed well in preliminary experiments but the inclusion of tissue-like aberrating layers reduced the accuracy ofthe localization. Therefore a hybrid imaging technique employing DORT (Decomposition of the Time Reversal Operator) and the MUSIC (Multiple Signal Classification) algorithm was developed. This method was able to localize kidney stones to within a few millimeters even in the presence of an aberrating layer. This would be sufficient accuracy for targeting lithotripter shock waves. The conclusion of this work is that tracking kidney stones with low frequency ultrasound should be effective clinically.
Ben, Hassan Saïdi Ismaïl. "Numerical simulations of the shock wave-boundary layer interactions." Thesis, Université Paris-Saclay (ComUE), 2019. http://www.theses.fr/2019SACLS390/document.
Full textSituations where an incident shock wave impinges upon a boundary layer are common in the aeronautical and spatial industries. Under certain circumstances (High Mach number, large shock angle...), the interaction between an incident shock wave and a boundary layer may create an unsteady separation bubble. This bubble, as well as the subsequent reflected shock wave, are known to oscillate in a low-frequency streamwise motion. This phenomenon, called the unsteadiness of the shock wave boundary layer interaction (SWBLI), subjects structures to oscillating loads that can lead to damages for the solid structure integrity.The aim of the present work is the unsteady numerical simulation of (SWBLI) in order to contribute to a better understanding of the SWBLI unsteadiness and the physical mechanism causing these low frequency oscillations of the interaction zone.To perform this study, an original numerical approach is used. The one step Finite Volume approach relies on the discretization of the convective fluxes of the Navier Stokes equations using the OSMP scheme developed up to the 7-th order both in space and time, the viscous fluxes being discretized using a standard centered Finite-Difference scheme. A Monotonicity-Preserving (MP) constraint is employed as a shock capturing procedure. The validation of this approach demonstrates the correct accuracy of the OSMP scheme to predict turbulent features and the great efficiency of the MP procedure to capture discontinuities without spoiling the solution and with an almost negligible additional cost. It is also shown that the use of the highest order tested of the OSMP scheme is relevant in term of simulation time and accuracy compromise. Moreover, an order of accuracy higher than 2-nd order for approximating the diffusive fluxes seems to have a negligible influence on the solution for such relatively high Reynolds numbers.By simulating the 3D unsteady interaction between a laminar boundary layer and an incident shock wave, we suppress the suspected influence of the large turbulent structures of the boundary layer on the SWBLI unsteadiness, the only remaining suspected cause of unsteadiness being the dynamics of the separation bubble. Results show that only the reattachment point oscillates at low frequencies characteristic of the breathing of the separation bubble. The separation point of the recirculation bubble and the foot of the reflected shock wave have a fixed location along the flat plate with respect to time. It shows that, in this configuration, the SWBLI unsteadiness is not observed.In order to reproduce and analyse the SWBLI unsteadiness, the simulation of a shock wave turbulent boundary layer interaction (SWTBLI) is performed. A Synthetic Eddy Method (SEM), adapted to compressible flows, has been developed and used at the inlet of the simulation domain for initiating the turbulent boundary layer without prohibitive additional computational costs. Analyses of the results are performed using, among others, the snapshot Proper Orthogonal Decomposition (POD) technique. For this simulation, the SWBLI unsteadiness has been observed. Results suggest that the dominant flapping mode of the recirculation bubble occurs at medium frequency. These cycles of successive enlargement and shrinkage of the separated zone are shown to be irregular in time, the maximum size of the recirculation bubble being submitted to discrepancies between successive cycles. This behaviour of the separation bubble is responsible for a low frequency temporal modulation of the amplitude of the separation and reattachment point motions and thus for the low frequency breathing of the separation bubble. These results tend to suggest that the SWBLI unsteadiness is related to this low frequency dynamics of the recirculation bubble; the oscillations of the reflected shocks foot being in phase with the motion of the separation point
Cachucho, André Rodrigues. "Weak shock wave reflections due to transverse waves in a conventional shock tube." Thesis, 2012. http://hdl.handle.net/10539/11234.
Full textCates, Joseph Eugene. "Studies of shock wave focusing using geometrical shock dynamics." Thesis, 1996. https://thesis.library.caltech.edu/3921/1/Cates_je_1996.pdf.
Full textNaidoo, Kavendra. "Dynamic shock wave reflection phenomena." Thesis, 2011. http://hdl.handle.net/10539/10527.
Full textKhatta, Abhishek. "Experimental Studies on Shock-Shock Interactions in Hypersonic Shock Tunnels." Thesis, 2016. http://etd.iisc.ac.in/handle/2005/2927.
Full textKhatta, Abhishek. "Experimental Studies on Shock-Shock Interactions in Hypersonic Shock Tunnels." Thesis, 2016. http://etd.iisc.ernet.in/handle/2005/2927.
Full textNdebele, Bright Bekithemba. "The diffraction, reflection and propagation of cylindrical shock wave segments." Thesis, 2017. http://hdl.handle.net/10539/23544.
Full textShock{waves (shocks) exist in various shapes; restricted to two dimensions some examples are planar, cylindrical, parabolic and elliptical. However, most shock{wave research has been focussed mostly on plane shocks. In this research, the scope is expanded to cylindrical shock{wave segments where a plane shock can be viewed as a cylindrical shock segment (referred to as a cylindrical shock) with a large radius of curvature; with this view, the expectations are that cylindrical and plane shocks behave similarly although with quantitative di erences. Whereas plane shocks have constant orientation, constant strength and can be imagined to extend unbounded, cylindrical shock segments demand that both ends be bound; this leads to spatial constraints, shock strength varying with respect to radius and shock orientation being non-constant. Three shock phenomena were investigated: di raction, re ection and propagation in converging diverging nozzles. Shock{tube experiments were run for shocks with a radius of 165 mm and strength between Mach numbers 1.2 and 1.7. Complementing these were Computational Fluid Dynamics (CFD) and Geometric Shock Dynamics (GSD) simulations where GSD relies on Whitham's equations. On shock di raction, cylindrical shocks were shown to behave qualitatively like plane shocks. Upon encountering a sharp corner, expansion waves propagate along the shock. However, after re ecting o the opposite wall they become compression waves and form a 'Mach re ection (MR)' like con guration on the shock front. A method for calculating the locus of the expansion waves based on Whitham's theory is presented, which on comparison with CFD simulations gives good correlation. Comparisons of shock pro les calculated using Whitham's theory and CFD is also made; it showed good correspondence before the formation of MR like con gurations after which the pro les di er. The re ection of cylindrical shocks was investigated from both an experimental and numerical perspective. Shock{tube experiments were run for shocks propagating on concave cylindrical walls with radii of 100 mm, 180 mm, 140 mm and 82 mm, the range was expanded by use of CFD. An expression for calculating the locus of the MR that forms on iii the shock front was derived which generalises onto plane shocks. Two limits were recognised, one where shock radius is much greater than wall radius and another where shock radius is much smaller. The former corresponds to a cylindrical shock on a plane wall while the latter a plane shock on a cylindrical wall as illustrated by the data gathered. Cylindrical shock propagation in converging-diverging nozzles was also investigated. In this case, the phenomena at play are di raction, re ection and focusing, a combination which results in a complex evolution of the shock front. Two types of channels were investigated, one formed from a 3rd order polynomial and another from circular arcs. In both cases, wall signal were generated on either side of the shock which split the shock{front into three sections. The decreasing channel cross{section area causes the shock strength to increase resulting in very weak MR formation on the shock front. Channels from circular walls exhibit a single peak in the centre line shock strength while that from polynomial pro le walls results in a double peak. This was then related to type of wall disturbance generated.
MT 2017
Bhaskar, K. "Studies On Shock Wave Attenuation In Liquids." Thesis, 2012. https://etd.iisc.ac.in/handle/2005/2041.
Full text