Approximated solutions to two-dimensional and axisymmetric jet impinging flows have been presented here. Assumptions have been made to reduce the related full Navier-Stokes equations to a non-linear ordinary differential equation. The Admomian decomposition method (ADM) has been employed to obtain an approximated solution to this differential equation. A trial and error strategy has been used t...

We present an experimental system that combines differential electrochemical mass spectrometry with hydrodynamic flow consisting of an impinging jet in a wall-tube configuration. This assembly allows simultaneous detection of electrochemical signals along with monitoring of dissolved gas species using differential electrochemical mass spectrometry under well-defined hydrodynamic conditions and ...

The addition of mist to a flow of steam or gas offers enhanced cooling for many applications, including cooling of gas turbine blades. The enhancement mechanisms include effects of mixing of mist with the gas phase and effects of evaporation of the droplets. An impinging mist flow is attractive for study because the impact velocity is relatively high and predictable. Water droplets, less than 1...

This paper presents an original experimental and numerical investigation of acoustic streaming driven by an acoustic beam reflecting on a wall. The water experiment features a 2 MHz acoustic beam totally reflecting on one of the tank glass walls. The velocity field in the plane containing the incident and reflected beam axes is investigated using Particle Image Velocimetry (PIV). It exhibits an...

The indoor air quality (IAQ) of severely polluted toilets is associated with the transmission diseases. Computational fluid dynamics (CFD) methods and experimental measurements were used to analyze diffusion characteristics pollutants. This study investigated normalized concentration ammonia hydrogen sulfide pollutants under three ventilation systems—mixing (MV), personalized (PV), impinging je...

In this study, mechanisms that cause the occurrence of a swirling vortex without an intake are explained. There more than one different reasons which may air-core or swirling-vortex flow filament within ambient fluid. An can also occur in fluid media provided coaxial subsurface depressions and thereby imaginary spherical sink surface sectors hydraulically developed by any means (such as rotatio...