Abstract
In this paper of the S-shaped diffuser with area ratio (AR) 1.5, an experimental investigation was conducted to analyze the effect of the change in curvature of a straight-wall diffuser. During this study, a Straight diffuser was changed in to a curved diffuser at different angles as their same upper and lower limbs (60/60, 90/90). Profile equations of diffusers were generated with the help of MATLAB/Simulink v2017a software. In this work centerline length is constant for all three profiles, Centerline length that’s utilized in the sector of circle and radius of curvature is calculated. S-shaped diffuser had a different unique angle with square inlet and a rectangular outlet. S-shaped diffuser CPR and CTL results compared with a straight walled diffuser with the different inlet velocity and Reynolds Number. These outcomes from this research obtained the coefficient of static pressure gain and coefficient of total pressure loss for the three profile of the diffuser (Straight, 60/60, and 90/90 S-Shaped Diffuser).
Highlights
A diffuser is a mechanical device which recuperates the pressure energy from the flowing fluid at the expense of its kinetic energy
Numerous analysts have been carried out on S-Shaped diffuser managing with the issue like impact of different inlet conditions, effect of angle of attack, effect of area ratio, effect of aspect ratio, effect of different inlet and outlet cross-section geometries, effect of angle of turn and many more on pressure recovery and non-uniformity of flow through it
The stream attributes in these ducts are by the inlet conditions and the radius of curvature
Summary
A diffuser is a mechanical device which recuperates the pressure energy from the flowing fluid at the expense of its kinetic energy. Numerous analysts have been carried out on S-Shaped diffuser managing with the issue like impact of different inlet conditions, effect of angle of attack, effect of area ratio, effect of aspect ratio, effect of different inlet and outlet cross-section geometries, effect of angle of turn and many more on pressure recovery and non-uniformity of flow through it. The stream in these ducts becomes complicated because ofthe inflection in the curvature along the direction of flow and the generation of strong pressure drovestreamwise vortices. Inlet velocity is estimation with the assistance of a pitot-static tube, which is arranged at some separation before the inlet area of the diffuser channel toward the fluid stream
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