Thermal characterization of porous graphitic foam - Convection in impinging flow

K. Sultan; C. T. DeGroot; A. G. Straatman; N. C. Gallego; H. Hangan

doi:10.1016/j.ijheatmasstransfer.2009.03.070

Thermal characterization of porous graphitic foam - Convection in impinging flow

K. Sultan, C. T. DeGroot, A. G. Straatman, N. C. Gallego, H. Hangan

Nanomaterials Chemistry Group

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

20 Scopus citations

Abstract

An experimental study has been undertaken to explore the convective heat transfer enhancement that can be achieved in an impinging airflow arrangement by bonding layers of graphitic foam to a heated metal substrate. The effects of foam protrusion, foam thickness and foam properties were explored in this study. The results show that surfaces with a layer of foam protruding upward with open edges had the highest convective enhancement over that of the bare substrate under the same conditions. For the protruding cases, convective enhancements of 30-70% were observed for airflows ranging from 7-11 m/s, for foam thicknesses in the range 2-10 mm. The highest enhancements were observed for foam specimens with the most open, interconnected void structure.

Original language	English
Pages (from-to)	4296-4301
Number of pages	6
Journal	International Journal of Heat and Mass Transfer
Volume	52
Issue number	19-20
DOIs	https://doi.org/10.1016/j.ijheatmasstransfer.2009.03.070
State	Published - Sep 2009

Funding

Authors a,c wish to acknowledge the financial support received by the Natural Sciences and Engineering Research Council of Canada. Author b wishes to acknowledge support received from the Advanced Automotive Materials Program, DOE Office of FreedomCAR and Vehicle Technology Program, under Contract DE-AC05-00OR22725 with UT-Battelle, LLC.

Keywords

Convective heat transfer enhancement
Graphitic foam

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10.1016/j.ijheatmasstransfer.2009.03.070

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title = "Thermal characterization of porous graphitic foam - Convection in impinging flow",

abstract = "An experimental study has been undertaken to explore the convective heat transfer enhancement that can be achieved in an impinging airflow arrangement by bonding layers of graphitic foam to a heated metal substrate. The effects of foam protrusion, foam thickness and foam properties were explored in this study. The results show that surfaces with a layer of foam protruding upward with open edges had the highest convective enhancement over that of the bare substrate under the same conditions. For the protruding cases, convective enhancements of 30-70% were observed for airflows ranging from 7-11 m/s, for foam thicknesses in the range 2-10 mm. The highest enhancements were observed for foam specimens with the most open, interconnected void structure.",

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AU - Sultan, K.

AU - DeGroot, C. T.

AU - Straatman, A. G.

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AU - Hangan, H.

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AB - An experimental study has been undertaken to explore the convective heat transfer enhancement that can be achieved in an impinging airflow arrangement by bonding layers of graphitic foam to a heated metal substrate. The effects of foam protrusion, foam thickness and foam properties were explored in this study. The results show that surfaces with a layer of foam protruding upward with open edges had the highest convective enhancement over that of the bare substrate under the same conditions. For the protruding cases, convective enhancements of 30-70% were observed for airflows ranging from 7-11 m/s, for foam thicknesses in the range 2-10 mm. The highest enhancements were observed for foam specimens with the most open, interconnected void structure.

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Thermal characterization of porous graphitic foam - Convection in impinging flow

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Keywords

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