Morphology and dynamics scaling of water sheet jets generated by microfluidic convergent nozzles

IF 2.8 2区工程技术 Q2 ENGINEERING, MECHANICAL

Experimental Thermal and Fluid Science Pub Date : 2025-03-28 DOI:10.1016/j.expthermflusci.2025.111480

Alexandros Peteinaris , Priyanka Sinha , Julian Schmid , Alexandros Terzis

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引用次数: 0

Abstract

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.

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来源期刊

Experimental Thermal and Fluid Science 工程技术-工程：机械

CiteScore

6.70

自引率

3.10%

发文量

159

审稿时长

34 days

期刊介绍： Experimental Thermal and Fluid Science provides a forum for research emphasizing experimental work that enhances fundamental understanding of heat transfer, thermodynamics, and fluid mechanics. In addition to the principal areas of research, the journal covers research results in related fields, including combined heat and mass transfer, flows with phase transition, micro- and nano-scale systems, multiphase flow, combustion, radiative transfer, porous media, cryogenics, turbulence, and novel experimental techniques.