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Articles 1 - 2 of 2
Full-Text Articles in Physical Sciences and Mathematics
Near-Field Thermal Radiative Transfer And Thermoacoustic Effects From Vapor Plumes Produced By Pulsed Co/Sub 2 /Laser Ablation Of Bulk Water, S. I. Kudryashov, Kevin Lyon, S. D. Allen
Near-Field Thermal Radiative Transfer And Thermoacoustic Effects From Vapor Plumes Produced By Pulsed Co/Sub 2 /Laser Ablation Of Bulk Water, S. I. Kudryashov, Kevin Lyon, S. D. Allen
Mechanical Engineering - Daytona Beach
Submillimeter deep heating of bulk water by thermal radiation from ablative water plumes produced by a 10.6 μm transversely excited atmospheric C O2 laser and the related acoustic generation has been studied using a contact time-resolved photoacoustic technique. Effective penetration depths of thermal radiation in water were measured as a function of incident laser fluence and the corresponding plume temperatures were estimated. The near-field thermal and thermoacoustic effects of thermal radiation in laser-ablated bulk water and their potential near-field implications are discussed.
c 2006 American Institute of Physics
Parametric Generation Of Multimegahertz Acoustic Oscillations In Laser-Generated Multibubble System In Bulk Water, Sergey I. Kudryashov, Kevin Lyon, Susan D. Allen
Parametric Generation Of Multimegahertz Acoustic Oscillations In Laser-Generated Multibubble System In Bulk Water, Sergey I. Kudryashov, Kevin Lyon, Susan D. Allen
Mechanical Engineering - Daytona Beach
Using a nanosecond C O2 laser for explosive surface boiling of bulk water, oscillatory acoustic transients from steam bubbles were recorded using a contact photoacoustic technique. Multiple well-resolved, high-amplitude multimegahertz spectral features reflecting parametric interactions between oscillations of cavitating steam bubbles were revealed in the fast Fourier transformation spectra of these transients. A potential parametric generation mechanism for these oscillation modes of steam bubbles is discussed.
© 2006 American Institute of Physics.