Modeling of Transient Thermal Contact Resistance out of Conjugate Gradient Method

✍ Scribed by A.M. El-Sabbagh; C. Fieberg; E. El-Magd; R. Kneer

• Publisher: John Wiley and Sons
• Year: 2007
• Tongue: English
• Weight: 301 KB
• Volume: 38
• Category: Article
• ISSN: 0933-5137
• DOI: 10.1002/mawe.200700131

✦ Synopsis

Abstract

Temperature profile at contacting pairs of any material combination is crucial in many engineering applications. A new experimental approach is suggested to estimate the contact heat transfer coefficient as well as the thermal contact resistance. This method is based on temperature infrared measurements of contact bodies and then solve the inverse problem with conjugate gradient method. Different affecting parameters are studied namely; surface roughness, presence of interlayer, applied pressure and bodies temperature difference. The time dependant heat transfer coefficients resulting from the proposed method need to be validated by a computer model. Close results are shown with slight deviation by the increase of the applied pressure and the temperature difference.