PURPOSE The purpose of this study is to explore the influence of segmentation of the upstream and downstream parent artery and hemodynamic boundary conditions (BCs) on the evaluated hemodynamic factors for the computational fluid dynamics (CFD) analysis of intracranial aneurysms. MATERIALS AND METHODS Three dimensional patient-specific aneurysm models were analyzed by applying various combina...

The annular foam breaker is one which uses the vacuum and shear force generated by the Coanda effect to break foam. The pressure distribution directly affects its performance. So an investigation on the flow characteristics inside the annular foam breaker is important to optimize its structure. In this paper, the computational fluid dynamics (CFD) code, FLUENT, is employed to simulate the flow ...

This paper summarizes the numerical analysis of a liquid-liquid ejector pump with focus on the accuracy of the employed cavitation model and in view of its potential application as a dualor multi-liquid mixing and injection system. While the use of gas-phase or gas/liquid-phase ejection systems has found wide application in gas/hybrid burners and scrubbers for air pollution control; the use of ...

The efficiency of a gas turbine largely depends on the aerodynamics and pressure recovery capacity diffuser. For reliable numerical simulation flow in diffuser, model must be validated basis experimental data structure. An study stage diffuser system was carried out. results this investigation are as follows: area applicability method for assessing determined; recommendations preparing transfer...

PURPOSE Changes in retinal gene expression are one of the first steps in the signaling pathway underlying the visual control of eye growth. We tried to identify novel, yet unknown, genes, that alter their expression pattern following imposed defocus, wearing of diffusers, or during recovery from myopia. Sequences found earlier by differential display studies were applied to 5'-RACE and identifi...

We report the reconstruction of a transparency image in Ghost diffraction scheme using statistical optics approach. This is implemented by static diffuser rather than pseudo thermal light source with rotating diffuser. The experimental implementation makes use spatial ergodicity and stationarity for spatially distributed random fields. A strategy to realize through intensity correlation phase r...

When the multiphase pump is running, internal medium often exists as bubble flow. In order to investigate occurrence characteristics in pressurization unit of more accurately, this paper couples computational fluid dynamics (CFD) with a population balance model (PBM) size distribution law under different operating conditions, taking into account coalescence and breakup. The research shows that ...

The turbojet engine operates on the ideal Brayton cycle (gas turbine) and consists of six main parts: diffusers, compressors, combustion chambers, turbines, afterburners nozzles. Using computer code writing in MATLAB software environment, exergy analysis all selected components, J85-GE-21 for selective height 1000-8000 meters above sea level at speeds 200 m/s temperatures 10°C, 20°C 40°C have b...