Heat transfer enhancement by shot peening of stainless steel

Pramote Koowattanasuchat; Numpon Mahayotsanun; Sedthawatt Sucharitpwatskul; Sasawat Mahabunphachai; Kuniaki Dohda

doi:10.3390/coatings10060584

Heat transfer enhancement by shot peening of stainless steel

Pramote Koowattanasuchat, Numpon Mahayotsanun^*, Sedthawatt Sucharitpwatskul, Sasawat Mahabunphachai, Kuniaki Dohda

^*Corresponding author for this work

Mechanical Engineering

Research output: Contribution to journal › Article › peer-review

3 Scopus citations

Abstract

In heat exchange applications, the heat transfer efficiency could be improved by surface modifications. Shot peening was one of the cost-effective methods to provide different surface roughness. The objectives of this study were (1) to investigate the influences of the surface roughness on the heat transfer performance and (2) to understand how the shot peening process parameters affect the surface roughness. The considered specimens were 316L stainless steel hollow tubes having smooth and rough surfaces. The computational fluid dynamics (CFD) simulation was used to observe the surface roughness effects. The CFD results showed that the convective heat transfer coefficients had linear relationships with the peak surface roughness (R_z). Finite element (FE) simulation was used to determine the effects of the shot peening process parameters. The FE results showed that the surface roughness was increased at higher sandblasting speeds and sand diameters.

Original language	English (US)
Article number	584
Pages (from-to)	1-15
Number of pages	15
Journal	Coatings
Volume	10
Issue number	6
DOIs	https://doi.org/10.3390/coatings10060584
State	Published - Jun 2020

Funding

Funding: This research was funded by the NSTDA University-Industry Research Collaboration (NUI-RC), grant number NUI-RC-M33-12-56-002D. The APC was funded by Khon Kaen University.

Keywords

Heat transfer
Shot peening
Stainless steel
Surface roughness

ASJC Scopus subject areas

Surfaces and Interfaces
Surfaces, Coatings and Films
Materials Chemistry

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10.3390/coatings10060584

Cite this

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title = "Heat transfer enhancement by shot peening of stainless steel",

abstract = "In heat exchange applications, the heat transfer efficiency could be improved by surface modifications. Shot peening was one of the cost-effective methods to provide different surface roughness. The objectives of this study were (1) to investigate the influences of the surface roughness on the heat transfer performance and (2) to understand how the shot peening process parameters affect the surface roughness. The considered specimens were 316L stainless steel hollow tubes having smooth and rough surfaces. The computational fluid dynamics (CFD) simulation was used to observe the surface roughness effects. The CFD results showed that the convective heat transfer coefficients had linear relationships with the peak surface roughness (Rz). Finite element (FE) simulation was used to determine the effects of the shot peening process parameters. The FE results showed that the surface roughness was increased at higher sandblasting speeds and sand diameters.",

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AU - Koowattanasuchat, Pramote

AU - Mahayotsanun, Numpon

AU - Sucharitpwatskul, Sedthawatt

AU - Mahabunphachai, Sasawat

AU - Dohda, Kuniaki

PY - 2020/6

Y1 - 2020/6

N2 - In heat exchange applications, the heat transfer efficiency could be improved by surface modifications. Shot peening was one of the cost-effective methods to provide different surface roughness. The objectives of this study were (1) to investigate the influences of the surface roughness on the heat transfer performance and (2) to understand how the shot peening process parameters affect the surface roughness. The considered specimens were 316L stainless steel hollow tubes having smooth and rough surfaces. The computational fluid dynamics (CFD) simulation was used to observe the surface roughness effects. The CFD results showed that the convective heat transfer coefficients had linear relationships with the peak surface roughness (Rz). Finite element (FE) simulation was used to determine the effects of the shot peening process parameters. The FE results showed that the surface roughness was increased at higher sandblasting speeds and sand diameters.

AB - In heat exchange applications, the heat transfer efficiency could be improved by surface modifications. Shot peening was one of the cost-effective methods to provide different surface roughness. The objectives of this study were (1) to investigate the influences of the surface roughness on the heat transfer performance and (2) to understand how the shot peening process parameters affect the surface roughness. The considered specimens were 316L stainless steel hollow tubes having smooth and rough surfaces. The computational fluid dynamics (CFD) simulation was used to observe the surface roughness effects. The CFD results showed that the convective heat transfer coefficients had linear relationships with the peak surface roughness (Rz). Finite element (FE) simulation was used to determine the effects of the shot peening process parameters. The FE results showed that the surface roughness was increased at higher sandblasting speeds and sand diameters.

KW - Heat transfer

KW - Shot peening

KW - Stainless steel

KW - Surface roughness

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Heat transfer enhancement by shot peening of stainless steel

Abstract

Funding

Keywords

ASJC Scopus subject areas

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