Computational modeling and simulation of gas focused liquid micro-sheets

The purpose of this work is to numerically evaluate the behavior microscopic gas-focused liquid sheets in terms material properties, nozzle structure and operating conditions used for experiments spectroscopy scattering where a short optical path required. numerical simulations are presented gas flow focusing nozzle, capable producing stream consisting sequence perpendicular micrometre thin sheets. consists central circular capillary delivery two capillaries that provide converging direction from opposite directions. High velocity impinging jets accelerate form elliptically shaped sheet which contracts downstream eventually forms similar plane primary sheet. process repeats further with another contraction, forming tertiary sheet, existing now same as This produces jet series Three dimensional conservation equations mass, energy momentum compressible two-phase system solved finite volume approach an algebraic fluid method. influence viscosity, density, surface tension, layout variation well parameters on evolution elaborated. parameter space six characterizing dimensionless numbers explored following ranges: Reynolds number 64–130, 122–620, Weber 23–803, ratio mass rate 16–58, viscosity 26–79, density 4807–7221. given thickness, width length. results show minor effect dynamic moderate dominant role tension. shape sensitive rates nozzle's angle between capillaries.