We investigate the unsteady heat transfer in harmonically excited liquid-film flows falling under the action of gravity over an electrically-heated inclined glass-substrate, by simultaneous application of planar laser-induced fluorescence (PLIF), particle image and particle tracking velocimetry (PIV/PTV), and infrared thermography (IR). These non-intrusive optical techniques allow us to recover detailed information on the film-height ( PLIF), the velocity field underneath the wavy interface (PIV/PTV), and the free-surface (gas-liquid interface) temperature (IR), with high spatial and temporal resolution. Based on these data and knowledge of the applied heat-flux and substrate temperature at the measurement location, the local and instantaneous heat-transfer coefficient (HTC) is also evaluated. Preliminary results from select flow-regions suggest significant deviations compared to expectations from equivalent steady flows.
Skip Nav Destination
ASME 2017 Heat Transfer Summer Conference
July 9–12, 2017
Bellevue, Washington, USA
Conference Sponsors:
- Heat Transfer Division
ISBN:
978-0-7918-5789-2
PROCEEDINGS PAPER
Application of Laser-Induced Fluorescence, Particle Velocimetry and Infrared Thermography to Heated Falling-Film Flows
Alexandros Charogiannis,
Alexandros Charogiannis
Imperial College London, London, UK
Search for other works by this author on:
Christos N. Markides
Christos N. Markides
Imperial College London, London, UK
Search for other works by this author on:
Alexandros Charogiannis
Imperial College London, London, UK
Christos N. Markides
Imperial College London, London, UK
Paper No:
HT2017-5081, V002T11A015; 10 pages
Published Online:
October 18, 2017
Citation
Charogiannis, A, & Markides, CN. "Application of Laser-Induced Fluorescence, Particle Velocimetry and Infrared Thermography to Heated Falling-Film Flows." Proceedings of the ASME 2017 Heat Transfer Summer Conference. Volume 2: Heat Transfer Equipment; Heat Transfer in Multiphase Systems; Heat Transfer Under Extreme Conditions; Nanoscale Transport Phenomena; Theory and Fundamental Research in Heat Transfer; Thermophysical Properties; Transport Phenomena in Materials Processing and Manufacturing. Bellevue, Washington, USA. July 9–12, 2017. V002T11A015. ASME. https://doi.org/10.1115/HT2017-5081
Download citation file:
45
Views
Related Proceedings Papers
Related Articles
Fluorescence and Fiber-Optics Based Real-Time Thickness Sensor for Dynamic Liquid Films
J. Heat Transfer (March,2010)
Related Chapters
Insulating Properties of W-Doped Ga2O3 Films Grown on Si Substrate for Low-K Applications
International Conference on Advanced Computer Theory and Engineering, 4th (ICACTE 2011)
Application of Universal Functions
Applications of Mathematical Heat Transfer and Fluid Flow Models in Engineering and Medicine
Gravitational Systems
Collective Phenomena in Plasmas and Elsewhere: Kinetic and Hydrodynamic Approaches