Browsing Naturwissenschaften, Mathematik und Informatik by Advisor "Lauterborn, Werner Prof. Dr."
Now showing items 1-14 of 14
-
Numerische Untersuchungen zum optischen Durchbruch von Femtosekunden-Laserpulsen in Wasser
(2010-11-05)When laser light of high intensity is focused into water, a plasma is formed in the area of the focus. This process is called optical breakdown and is numerically investigated for femtosecond ... -
Spektroskopische Erfassung der Gastemperatur im Brennraum von Ottomotoren
(2010-03-26)It is necessary to know the temperature of the fuel-air-mixture within combustion chambers in oder to develop new engine systems or to optimize existing combustion processes. In this work ... -
Molekulardynamische Untersuchungen zur Binnendynamik kollabierender Blasen
(2009-06-23)This work deals with the numerical simulation of cavitation- and sonoluminescence-bubbles, as well as laser-induced bubbles. The interior of the bubble is simulated by molecular ... -
Multivariate Korrektur des Temperatureinflusses in der NIR-spektroskopischen Materialfeuchtebestimmung
(2009-06-08)The market of process measurement technology grows continuously and the need of universal measurement technologies for quality control increases steadily. The most important parameter of ... -
Particle - Tracking - Velocimetry - Messungen an kollabierenden Kavitationsblasen
(2008-12-01)The flowfields around cavitation bubbles collapsing near obstacles are investigated in this work. For this purpose, photographs of the laser-induced bubbles are taken and the method of ... -
Partikelmodellierung der Strukturbildung akustischer Kavitationsblasen in Wechselwirkung mit dem Schalldruckfeld
(2006-10-10)When a strong acoustic field is coupled into a liquid, it ruptures and bubbles emerge (acoustic cavitation). The acoustic cavitation bubbles show volume oscillations as well as a translative ... -
Faseroptische Gemischbildungsanalyse in Otto-Motoren bei direkteinspritzenden Brennverfahren
(2005-01-12)The mixture formation process in gasoline direct injection engines is very complex and depends strongly on thermodynamic processes mainly induced by the engine geometrie. Most of the optical ... -
Untersuchungen zur IR-Laser-Ablation in Wasser
(2004-08-05)Pulsed mid-IR laser ablation in water is characterized by simultaneous heating and thermoelastic stress generation. In this work, a numerical model was developed to describe both the ... -
Untersuchungen zur laserinduzierten Kavitation mit Nanosekunden- und Femtosekundenlasern
(2004-02-27)The optical breakdown in the focus of a strong laser pulse can rupture liquids. A bubble is formed, which can serve as a well reproducible model for the investigation of cavitation mechanisms.In ... -
Cavitation and shock wave effects on biological systems
(2004-02-26)This thesis investigates the effects of cavitation and shock waves on systems of biological or medical relevance. Its main focus lies on high-speed optical observations of cavitation bubble ... -
Untersuchung von Einzel- und Mehrblasensystemen in akustischen Resonatoren
(2003-12-16)Acoustically driven bubbles in a liquid perform volume oscillations and translational motion. In standing sound fields the bubbles form complex spatio-temporal structures (acoustic ... -
Diffraktive Phasenelemente für partiell-kohärente UV-Laserstrahlung
(2001-07-25)Diffractive phase elements (DPE) are suited for beam shaping of coherent laser radiation. The height profile of the DPE changes the phase of the incomming laser beam to shape the angular ... -
Theoretische Beschreibung und experimentelle Untersuchung raum-zeitlicher Strukturbildung in akustischen Kavitationsblasenfeldern
(2001-05-31)The subject of this thesis is the spatio-temporal structure formation in acoustic cavitation. The main question is the relevance of the microscopic dynamics of the bubbles on fast scales ... -
Methoden der angewandten Schwingungsphysik zur Analyse technischer Systeme
(2000-01-02)Die vorliegende Arbeit faßt die Ergebnisse meiner Tätigkeit als Doktorand in der Arbeitsgruppe "Nichtlineare Dynamik"am III. Physikalischen Institut der Universität Göttingen zusammen. Die behandelten Problemfelder entstammen ...