To Study And Analyze the Variation of Pressure Recovery Coefficient at the Walls of  Axial Annular Diffuser at Area Ratio 2.5 and Casing Diverging Angle of 6° using CFD

Devesh Kumar; B. B. Arora

doi:https://doi.org/10.51976/ijari.731915

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To Study And Analyze the Variation of Pressure Recovery Coefficient at the Walls of Axial Annular Diffuser at Area Ratio 2.5 and Casing Diverging Angle of 6° using CFD

Devesh Kumar, B. B. Arora

Vol 7 , Issue 3 , July - September 2019 | Pages: 97-102 | Research Paper

https://doi.org/10.51976/ijari.731915

Received: January 29, 2019 | Revised: May 20, 2019 | Accepted: May 28, 2019 | Published Online: June 15, 2019

Author Details ( * ) denotes Corresponding author

1. * Devesh Kumar, Department of Mechanical Engineering, Delhi Technological University, Delhi, India (dev77mmmut@gmail.com)

2. B. B. Arora, Department of Mechanical Engineering, Delhi Technological University, Delhi, India

The present work relates to the analysis of flow through the parallel hub and diverging casing annular diffuser. In this analysis variation of pressure recovery coefficients have been visualized at the diffuser walls with and without swirl. The casing angle and area ratio have been taken as 60 and 2.5 .The swirl angle was varied from 00to 250 at the inlet of diffuser. The analysis was carried out for flow regime with various experimentally obtained inlet velocity profiles with or without swirl [1]. Pressure coefficients have been calculated along the casing and hub walls of axial annular diffuser. In the present work CFD approach was used to find the results by using RNG k-ε turbulence model.

Keywords

Annular diffuser; Pressure Recovery Coefficient; Area Ratio; Casing Diverging Angle and CFD.

BB Arora. Performance analysis of parallel hub diverging casing axial annular diffuser with 200 equivalent cone angle. Australian Journal of Mechanical Engineering, 12(2), 2014, 179-194.

T Srinath. An investigation of the effects of swirl on flow regimes and performances of annular diffuser with inner and outer cone angles. MASc Thesis, University of Waterloo, Canada., Hoadley, 1970.Three Dimensional Turbulent Boundary Layers in an Annular Diffuser.PhD Thesis, Department of Engineering, University of Cainbridge, London, 1968.

R Coladipietro, RJH Schneider, K Shridhar. Effects of Inlet Flow Conditions on the Performance of Equi Angular Annular Diffusers.CSME Paper No. 7384, 1974.

MRA Shaalan, IMM Shabaka. An Experimental Investigation of the Swirling Flow Performance of an Annular Diffuser at Low Speed, ASME Paper No. 75WA/FE17, 1975.

RP Lohmann, SJ Markowski, ET Prookman. Swirling flow through annular diffusers with conical walls. Journal of Fluids Engineering, 101, 1979, 224-229.

RN Sapre, SN Singh, DP Agrawal, RC Malhotra. Flow through Equiangular Wide Angle Annular Diffusers.15th NCFMFP, Srinagar, 7, 1987.

SN Singh, DP Agarwal, RN Sapre, RC Malhotra. Effect of inlet swirl on the performance of wide angled diffusers. Indian journal of Engineering & Materials Sciences, 1, 1994, 63-69.

SN Singh, V Seshadri. Effect of Inlet Swirl on the Performance of Annular Diffusers having the Same Equivalent Cone Angle. Proceedings of the Institution of Mechanical Engineers, Part G, Journal of Aerospace Engineering, 220, 2006, 129-143.

R Mohan, SN Singh, DP Agrawal. Optimum Inlet Swirl for Annular Diffuser Performance Using CFD. Indian Journal of Engineering and Materials Sciences. 5, 1998, 15-21.

D Japikse. Correlation of Annular Diffuser performance with Geometry, Swirl, and Blockage. Proceedings of the 11th Thermal and Fluids Analysis Workshop (TFAWS), Cleveland, Ohio, 21-25, 2000, 107-118

M Kumar, BB Arora .Effect of inlet swirl on the flow behavior inside annular diffuser. International Journal of Dynamics of Fluids, 7(2), 2011, 181-188.

T Ozturk, A Pinarbasi. Flow Analysis in Centrifugal Compressors Vaneless Diffusers. Journal of Scientific and Industrial Research, 67, 2008, 348-354.

JS Rita, GR James, DF Ronald. Finite Element Analysis of Viscous Flow in a Vaned Radial Diffuser. Department of Mechanical and Aerospace Engineering, University of Virginia, 2010.

M Nabavi.Three dimensional asymmetric flow through a planer diffuser. Journal of Heat and Mass Transfer, 37 2010, 17-30.

M Kumar, BB Arora, S Maji, S Maji. Effect of Area Ratio and Inlet Swirl on the Performance of Annular Diffuser, International Journal of Applied Engineering Research, 713, 2012, 1493-1506.

S Basarat. Effect of geometric parameters on the performance of wide angle diffusers. International Journal of Innovative research in science, Engineering and Technology, 2(9), 2013, 4178-4191.

R Keerthana, G Rani. Flow analysis of annular diffusers. International Journal of Engineering Research and applications, 2(3), 2012, 2348-2351.

Stefano Ubertini, Umberto Desideri. Experimental Performance Analysis of an Annular Diffuser with and without Struts. Experimental Thermal and Fluid Science, 22,183-195.

MK Gopaliya, M Kumar, S Kumar, SM Gopaliya. Analysis of Performance of S Shaped Diffuser with Offset. Aerospace Science and Technology, 2007, 130-135.

YY Tusi, HW Wang. Calculation of laminar separated flow in symmetric Two Dimensional diffuser. Journal of Fluid Engineering, 117, 1995, 612-616.

MK Gopaliya, KK Chaudhary. CFD Analysis of Y-Shaped Diffuser with Combined Horizontal and Vertical offsets. Aerospace Science and Technology, 14, 2010, 338-347.