Oriental Journal of Computer Science and Technology

R. E. Shelke ¹, L. B. Bhuyar ²

Affiliations
1 Government I.T.I. Morshi Road, Amravati - 444 603, IN
2 Department of Mechanical Engineering, PRM Institute of Technology and Research, Badnera Amravati - 444 701, IN

Abstract

2 dimensional CFD simulation of slot jet impingement cooling on concave surface is reported using Ansys FLUENT Post software at specified geometry and boundary conditions. Realizable k-ª model has been used for resolving the turbulence.It has been observed that the results obtained from CFD model are in good agreement with that of the experimental results.

Keywords

Heat Transfer, Computational Fluid Dynamics (CFD), Contours.

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R. E. Shelke ¹, L. B. Bhuyar ²

Affiliations
1 Government I.T.I. Morshi Road, Amravati-444 603, IN
2 Department of Mechanical Engineering, PRM Institute of Technology and Research, Badnera Amravati - 444 701, IN

Abstract

Impinging jets on rough surfaces are important in many industrial applications. The surface may become rough for many reasons. Roughness may arise from manufacturing processes, a long time in service and/or natural occurrences such as rain, snow, frost etc. Prior research indicate that the average roughness height on in-service gas turbine blades may vary from 1.5um to 10um.This is very rough considering the thickness of the boundary layer is of the order of 1 mm.Similarly,there are some industrial applications like spray formed billet cooling by impinging jets where the target and the jet are not orthogonal but the oblique.Therefore, study of inclination of target plate on heat transfer between impinging jet and rough flat plate is important. In the present work, inclination effect is studied for the oblique angles of 45°, 60° and 75° at a given Z/D of 1 and Reynolds number of 23000. The rough surfaces are in the form of hexagonal prism of side 2.04 mm and height of 2 mm spaced at a pitch of 7.5 mm on the target plate.The experimental results are validated using Artificial Neural Network (ANN). It has been observed that the validation using ANN gives the correlation coefficient (R²) as 0.998 to 1.

Keywords

Impinging Air Jet, Heat Transfer, Hexagonal Finned Surface, Artificial Neural Network (ANN).

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R. E. Shelke ¹, L. B. Bhuyar ²

Affiliations
1 Government I.T.I. Morshi Road, Amravati - 444 603, IN
2 Department of Mechanical Engineering, PRM Institute of Technology and Research, Badnera Amravati - 444 701, IN

Abstract

Impinging jets on curved surfaces are important in many industrial applications. Experimentation have been carried out for heat transfer evaluation between the impinging air jets and curved surfaces in the prior research. An attempt has been made towards the model development using Computational Fluid Dynamics (CFD) to validate the experimental results obtained for curved surface in the present study. This attempt is made because, the physical model experimentation is time consuming and cumbersome as well as costlier affair. Hence, if the CFD model is developed in accordance with the results obtained earlier and if it is in good agreement with the same then using the same procedure, the CFD models for flat and rough surface can also be formulated, thereby, reducing the efforts of actual experimentations in future.

Keywords

Impinging Air Jet, Heat Transfer, Computational Fluid Dynamics (CFD).

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