Thermal Contact Resistance of Wavy Surfaces (RESEARCH NOTE)

نویسندگان

  • A. Saboonchi Mechanical Engineering, Isfahan University of Technology
چکیده مقاله:

In this paper, the method of determining thermal contact resistance of wavy surfaces is discussed exactly. For determining the thermal contact resistance of real contacts, a new method has been presented. In this method, assuming a regular sinusoidal surface profile, the real contact area in terms of applied forces has been determined. Then thermal contact resistance has been calculated. Testing 6 kinds of insulator’s combinations with wavy surfaces has approved the reliability of the analysis. The results of experiments and analysis had good agreement with each other.

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Thermal Contact Resistance of Nonconforming Rough Surfaces, Part 1: Contact Mechanics Model

A new analytical model for spherical rough contacts, in the form of a set of relationships, is developed and solved numerically. It is shown that the maximum contact pressure is the parameter that specifies the contact pressure distribution. Simple correlations for calculating the maximum contact pressure and the radius of the macrocontact area as functions of the nondimensional parameters are ...

متن کامل

Thermal Contact Resistance of Nonconforming Rough Surfaces, Part 2: Thermal Model

A new analytical model is developed for thermal contact resistance (TCR) of nonconforming rough surfaces. TCR is considered as the superposition of macroand microthermal resistances. The effects of roughness, load, and radius of curvature on TCR are investigated. It is shown that there is a value of surface roughness that minimizes the TCR for a fixed load and geometry. Simple correlations for ...

متن کامل

AIAA 2003-4198 Thermal Contact Resistance of Non- Conforming Rough Surfaces, Part 2: Thermal Model

Thermal contact resistance (TCR) of non-conforming rough surfaces is studied and a new analytical model is developed. TCR is considered as the superposition of macro and micro components accounting for the effects of surface curvature and roughness, respectively. The effects of roughness, load and radius of curvature on TCR are investigated. It is shown that there is a value of surface roughnes...

متن کامل

Thermal Contact Resistance and Thermal Conductivity of a Carbon Nanofiber

We have measured the thermal resistance of a 152-nm-diameter carbon nanofiber before and after a platinum layer was deposited on the contacts between the nanofiber and the measurement device. The contact resistance was reduced by the platinum coating for about 9–13% of the total thermal resistance of the nanofiber sample before the platinum coating. At a temperature of 300 K, the axial thermal ...

متن کامل

Thermal Conductivity and Thermal Contact Resistance of Metal Foams

Unique specifications of metal foams such as relatively low cost, ultra-low density, high surface-area-to-volume ratio, and most importantly, the ability to mix the passing fluid provide them a great potential for a variety of thermal-fluidics

متن کامل

Note: Thermal analog to atomic force microscopy force-displacement measurements for nanoscale interfacial contact resistance.

Thermal diffusion measurements on polymethylmethacrylate-coated Si substrates using heated atomic force microscopy tips were performed to determine the contact resistance between an organic thin film and Si. The measurement methodology presented demonstrates how the thermal contrast signal obtained during a force-displacement ramp is used to quantify the resistance to heat transfer through an i...

متن کامل

منابع من

با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ذخیره در منابع من قبلا به منابع من ذحیره شده

{@ msg_add @}


عنوان ژورنال

دوره 17  شماره 3

صفحات  293- 300

تاریخ انتشار 2004-09-01

با دنبال کردن یک ژورنال هنگامی که شماره جدید این ژورنال منتشر می شود به شما از طریق ایمیل اطلاع داده می شود.

میزبانی شده توسط پلتفرم ابری doprax.com

copyright © 2015-2023