We propose a spectral imaging method that allows a regular digital camera to be converted into a snapshot spectral imager by equipping the camera with a dispersive diffuser and with a compressed sensing-based algorithm for digital processing. Results of optical experiments are reported.

the paper presents the results of an investigation on the acoustic performance of vertical profile parallel barriers with quadratic residue diffuser tops and faces. a 2d boundary element method (bem) is used to predict the barrier insertion loss. the results of rigid and with absorptive coverage are also calculated for comparisons. using qrd on the top surface and faces of all vertical profile ...

The penetration depth of photoacoustic imaging in biological tissues has been fundamentally limited by the strong optical attenuation when light is delivered externally through tissue surface. To address this issue, we previously reported internal-illumination using a customized radial-emission fiber diffuser, which, however, complex fabrication, high cost, and non-uniform emission. overcome th...

This paper numerically investigates stator endwall designs for a mixed flow turbine. One key design parameter studied is the tilting angle of endwall. By examining with different angles, aim this to improve efficiency turbine at low velocity ratio working conditions. The performance curve speed was chosen comparison between baseline and tilted designs. First, numerical predictions were validate...

In the current research, numerical analysis was used to investigate flow behavior through axial jet-pump with various mixing chamber configurations (straight pipe and straight pipe-diffuser-straight pipe) in presence of inlet swirling its influence on pump performance. The effects introducing suction motive line, are numerically investigated. optimum swirl angle is found be 45o which yields max...

The numerical modeling and simulation of particle dispersion during the filling process a tubular combustion chamber are presented. By means multiphase large eddy simulations (LES) distribution inside circular diffuser-reactor is studied to analyze two-phase flow dynamics for metal powder in reactor with flame propagation. Typical accumulations found that form close wall also particles tend seg...

In our work, we focused on measuring the performance characteristics of a test hydrogen fuel cell with an open cathode. The aim work was to verify effect mass flow through power output as function current density and voltage cell. A bench capable testing cells up 2000 W used measure characteristics. composed three its total membrane area 100 cm2. PIV measurement system flow. performed at inlet ...