In the present investigation the distribution of mean velocity, static pressure and total pressure are experimentally studied on a C-shape diffuser of 40° angle of turn with an area ratio of 1.278 and centerline length was chosen as three times of inlet diameter. The experimental results then were numerically validated with the help of Fluent and then a series of parametric investigations are c...

Three vortex-generator configurations were installed aft of the inlet throat on the centerbody of a Mach 3 . 0 mixed-compression inlet. The three were about equal in im­ proving diffuser pressure recovery and all produced significant, although unequal, reduc­ tions in distortion. Only the most densely spaced configuration generated vortices that dissipated before reaching the compressor face. V...

In the present investigation the distribution of mean velocity, static pressure and total pressure are experimentally studied on an annular curved diffuser of 37.5° angle of turn with an area ratio of 1.273 at Reynolds number 1.85 x 10 based on inlet diameter and mass average inlet velocity. The experimental results then were numerically validated with the help of Fluent and then a series of pa...

Regions of positive slope in the pressure-discharge characteristics can result in a reduction or even lack of damping of system instabilities. They are therefore one of the major concerns in design and operation of centrifugal pumps as they are limiting the admissible operating range. The considered preliminary hydraulic design of an industrial double suction pump of medium specific speed ν = 0...

The effects of using a wind acceleration device (wind lens) with vertical-axis wind turbines in wind tunnel experiments were examined. A wind lens consists of a diffuser and flanges, and this study investigated the optimum parameters of their configuration with regard to the power augmentation of the turbines. The wind lens with a flat-panel-type diffuser demonstrated power augmentation by a fa...

A numerical analysis is carried out to determine the flowfield and starting characteristics of a straight cylindrical supersonic exhaust diffuser of a high-altitude simulation of a high expansion ratio rocket nozzle. The flow field inside the high-altitude facility is analyzed for a conical nozzle of expansion ratio of 25, diffuser inlet-to-nozzle throat area ratio of 28.9, and diffuser length-...

Numerical investigations have been carried out on 35% scaled down model of PGT10 gas turbine exhaust diffuser under the condition of with inlet guidevanes and without struts. Numerical simulations were carried out to determine the static pressure development and pressure recovery, by varying the area ratio and divergence angles varying from θ = 7 to 13 by keeping the diffusion length constant. ...

Experimental investigation of flow development within a rectangular 90o curved diffusing C-duct of low aspect ratio and area ratio of 2 was carried out and the threedimensional computational results are then compared with the experimental results for numerical validation. All measurements were made in a turbulent flow regime (Re = 2.35x10 5 ), based on the duct inlet hydraulic diameter (dh = 0....

The application of machine learning to solve engineering problems is in extremely high demand. This article proposes a tool that employs algorithms for predicting the frequency response an unsteady vortex phenomenon, precessing core (PVC), occurring conical diffuser behind radial swirler. model input parameters are two components time-averaged velocity profile at cone inlet. An empirical databa...