Three dimensional CFD analysis of solar air heater for enhancement of thermal performance using arc-shaped wire turbulator

Vasudeva K. Karanth, Manjunath M. Shivamallaiah, Yagnesh N. Sharma

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

A literature review carried out by the authors reveals that that a CFD analysis has not been the focus of attention to evaluate the efficacy of turbulators for improving the thermal performance of solar air heaters. A three dimensional CFD analysis is carried out in the present work to augment the performance of solar air heater. Arc shaped wire turbulators (with forward and reverse curvature aligned with flow direction), V- shaped wire turbulators (with forward and reverse geometry with respect to the flow direction) and Straight turbulators are used in this study to improve the flow turbulence and thereby enhance the convective heat transfer to air. The numerical results are validated with experimental results for model without turbulator to calibrate the numerical methodology. The numerical results show that turbulators whether curved or straight are useful in enhancing the heat transfer rates. The Arc shaped turbulators have been found to provide better heat transfer coefficient value compared to that of straight and V-shape turbulators. Also interestingly, Reverse arc turbulators seems to provide better heat transfer coefficient value compared to forward arc turbulators. Further, V-angle has no significant effect for both forward and reverse V-turbulator configurations.

Original languageEnglish
Title of host publicationFluids Engineering Systems and Technologies
PublisherAmerican Society of Mechanical Engineers(ASME)
Volume7 B
ISBN (Print)9780791856321
DOIs
Publication statusPublished - 01-01-2013
Externally publishedYes
EventASME 2013 International Mechanical Engineering Congress and Exposition, IMECE 2013 - San Diego, CA, United States
Duration: 15-11-201321-11-2013

Conference

ConferenceASME 2013 International Mechanical Engineering Congress and Exposition, IMECE 2013
CountryUnited States
CitySan Diego, CA
Period15-11-1321-11-13

Fingerprint

Computational fluid dynamics
Wire
Heat transfer coefficients
Air
Heat transfer
Turbulence
Geometry
Hot Temperature

All Science Journal Classification (ASJC) codes

  • Mechanical Engineering

Cite this

Karanth, V. K., Shivamallaiah, M. M., & Sharma, Y. N. (2013). Three dimensional CFD analysis of solar air heater for enhancement of thermal performance using arc-shaped wire turbulator. In Fluids Engineering Systems and Technologies (Vol. 7 B). American Society of Mechanical Engineers(ASME). https://doi.org/10.1115/IMECE2013-64028
Karanth, Vasudeva K. ; Shivamallaiah, Manjunath M. ; Sharma, Yagnesh N. / Three dimensional CFD analysis of solar air heater for enhancement of thermal performance using arc-shaped wire turbulator. Fluids Engineering Systems and Technologies. Vol. 7 B American Society of Mechanical Engineers(ASME), 2013.
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Karanth, VK, Shivamallaiah, MM & Sharma, YN 2013, Three dimensional CFD analysis of solar air heater for enhancement of thermal performance using arc-shaped wire turbulator. in Fluids Engineering Systems and Technologies. vol. 7 B, American Society of Mechanical Engineers(ASME), ASME 2013 International Mechanical Engineering Congress and Exposition, IMECE 2013, San Diego, CA, United States, 15-11-13. https://doi.org/10.1115/IMECE2013-64028

Three dimensional CFD analysis of solar air heater for enhancement of thermal performance using arc-shaped wire turbulator. / Karanth, Vasudeva K.; Shivamallaiah, Manjunath M.; Sharma, Yagnesh N.

Fluids Engineering Systems and Technologies. Vol. 7 B American Society of Mechanical Engineers(ASME), 2013.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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Karanth VK, Shivamallaiah MM, Sharma YN. Three dimensional CFD analysis of solar air heater for enhancement of thermal performance using arc-shaped wire turbulator. In Fluids Engineering Systems and Technologies. Vol. 7 B. American Society of Mechanical Engineers(ASME). 2013 https://doi.org/10.1115/IMECE2013-64028