Journal: Experimental Thermal and Fluid Science

Abbreviation

Exp. therm. fluid sci.

Publisher

Elsevier

Journal Volumes

ISSN

0894-1777
1879-2286

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Publications1 - 10 of 16
  • Explosive vaporization in microenclosures
    Item type: Conference Paper
    Romera-Guereca, G.; Lichtenberg, J.; Hierlemann, A.; et al. (2006)
    Experimental Thermal and Fluid Science
  • A comparison between the wake behind finned and foamed circular cylinders in cross-flow
    Item type: Journal Article
    Khashehchi, Morteza; Ashtiani Abdi, Iman; Hooman, Kamel; et al. (2014)
    Experimental Thermal and Fluid Science
  • Steady and unsteady flow within an axisymmetric tube dilatation
    Item type: Journal Article
    Stamatopoulos, Christos; Papaharilaou, Yannis; Mathioulakis, Demetri; et al. (2010)
    Experimental Thermal and Fluid Science
  • Exploring thermal buoyant flow in urban street canyons: Influence of approaching turbulent boundary layer
    Item type: Journal Article
    Xue, Yunpeng; Zhao, Yongling; Mei, Shuo-Jun; et al. (2024)
    Experimental Thermal and Fluid Science
    Turbulent boundary layer inflow is a critical factor in urban climate research, shaping canyon flow dynamics, air ventilation patterns, and heat flux distribution. In numerical simulation studies, it serves as a fundamental inflow boundary condition, profoundly influencing overall results. In this study, simultaneous Particle Image Velocimetry and Laser-Induced Fluorescence (PIV-LIF) measurements are utilized within a large closed-circuit water tunnel. This approach allows comprehensive flow data to be gathered under varied flow and thermal conditions, encompassing a spectrum of Richardson numbers ranging from 0.01 to 1.34. The investigation aims to elucidate the effects of turbulent boundary layer flows on heat transfer mechanisms and flow behaviours within a two-dimensional street canyon model with a unit aspect ratio. The analysis reveals distinct heat and fluid flow characteristics, highlighting the interplay between thermal conditions and flow dynamics. The three chosen turbulent boundary layer flows demonstrate unique influences on flow characteristics and heat removal capacity. Significant variations in ventilation rates are observed, with a maximum difference of 80% among the tested boundary layer flows. Additionally, the most pronounced variation in heat removal capacity is approximately 45%. Thicker boundary layers with lower velocities near the canyon exhibit reduced ventilation and heat removal capabilities. Furthermore, the investigation reveals that varied turbulence inlet profiles result in diverse fluctuating features at the canyon roof level, with a comparatively lesser impact on the deeper regions of the canyon.
  • Morphology and dynamics scaling of water sheet jets generated by microfluidic convergent nozzles
    Item type: Journal Article
    Peteinaris, Alexandros; Sinha, Priyanka; Schmid, Julian; et al. (2025)
    Experimental Thermal and Fluid Science
    The morphological dynamics of water sheet jets generated by microfluidic convergent nozzles represent a critical area of research with significant implications for advancing controlled spray formation. This study employs anodically bonded Silicon wafer chips with etched converging nozzle geometries to investigate the effects of geometric parameters under varying flow conditions. High-speed shadowgraph imaging is utilized to assess the influence of nozzle thickness, outlet width, converging angle, and flow rate on the size and stability of water sheet jets. Experimental results demonstrate that sheet size is primarily governed by flow rate, while stability is strongly affected by nozzle design. Scaling correlations are developed to quantitatively describe water sheet dimensions and transitions between jet breakup, stable sheets, and unstable sheet spray breakup. These findings advance the understanding of water sheet jet dynamics and provide a robust framework for designing microfluidic systems optimized for planar and controlled spray formation.
  • Mixed convection flow investigation in a rectangular horizontal tube stenosis via liquid crystal thermography and planar PIV
    Item type: Journal Article
    Stamatopoulos, Christos; Mathioulakis, Demetri; Katsamouris, Asterios (2011)
    Experimental Thermal and Fluid Science
  • Transport of salts and micron-sized particles entrained from a boiling water pool
    Item type: Journal Article
    Cosandey, Jérôme O.; Günther, Axel; Rudolf von Rohr, Philipp (2003)
    Experimental Thermal and Fluid Science
  • Study of an integrated thermal sensor in different operational modes, under laminar, transitional and turbulent flow regimes
    Item type: Journal Article
    Stamatopoulos, Christos; Petropoulos, Anastasios; Mathioulakis, Demetri; et al. (2008)
    Experimental Thermal and Fluid Science
  • Experimental study of developing free-falling annular flow in a large-scale vertical pipe
    Item type: Journal Article
    Xue, Yunpeng; Stewart, Colin; Kelly, David; et al. (2024)
    Experimental Thermal and Fluid Science
    Annular flow is the primary characteristic of unsteady wastewater flow, which initiates entrained air and sets up the air pressure regime within the system - an important design consideration. This paper reports on an experimental investigation of free-falling annular flow in a vertical pipe with different inlets at extended flow ranges up to Re = 3 × 10⁴, similar to those in Building Drainage Systems (BDS). In the experimental setup, a vertical pipe system (5 m) was used to record velocity profiles and film thickness in the developing region through Particle Image Velocimetry (PIV) measurements. Entrained droplets were collected through a separator, and the entrainment fraction was calculated at different flow conditions. The study reports on the development process of the film velocity and thickness along the vertical pipe, which agrees well with empirical predictions. The results of the droplet entrainment of a vertical annular flow show the development process to the steady state. Additionally, a Tee-junction inlet in drainage system generates a higher and different entrainment profile.
  • Dynamics of monodisperse micrometre-sized metal droplets at low non-dimensional wavenumbers
    Item type: Journal Article
    Sanders, Alexander F.R.; Nakhle dit el Ghorr, Mario; Abhari, Reza S. (2017)
    Experimental Thermal and Fluid Science
Publications1 - 10 of 16