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Notes on the quantum of thermal conductance

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The following is a dump from LaTex, just to see what happens… begin{abstract} In this module we derive the quantum of thermal conductance, and along the way, concepts related to phonon density of states and spatial dimensionality are discussed and applied. The end result is a simple...

Main Page

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Instructor Information Timothy Fisher Adjunct Professor, JNCASR/ICMS; Professor, Purdue University Email: tsfisher@purdue.edu Schedule L1: Heat transfer overview and review L2: Heat conduction: Subcontinuum to continuum L3: Heat convection and radiation: Fundamentals L4: Special topics,...

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Experimental Updates from Dr. Rajib Paul DSC and XPS results for modified carbon foam: (file:Updates__7-29-2011_by_Rajib.pptx not found)

Course Logistics for Fall 2015 offering Class Time, Place: Tu Th 3:00-4:15 pm, EE 115 Instructor: Timothy Fisher (Office: ME 2197/ Birck 2027A, Phone: 765-494-5627, Email: tsfisher@purdue.edu) Office Hours: Tu Th 4:15-5:00 pm in ME 2197. Pre-requisites: Graduate standing or the permission...

Week 1

22 Aug 2011 lecture: audio to be uploaded 24 Aug 2011 lecture: NO IN-CLASS LECTURE. As a substitute, please see Tutorial 1: Thermal Transport Across Interfaces - Phonons

Week 2

29 August 2011 lecture: (file:Lecture_3_-_Cellular.m4v not found)

Week 3

5 September 2011: NO LECTURE (LABOR DAY) 7 September 2011 lecture: (file:Lecture_6_-_Cellular.m4v not found) 9 September 2011 lecture: (file:Lecture_7_-_Cellular.m4v not found)

Week 4

12 September 2011 lecture: (file:Lecture_8_-_Cellular.m4v not found) 14 September 2011 lecture: (file:Lecture_9_-_Cellular.m4v not found) 16 September 2011 lecture: (file:Lecture_10_-_Cellular.m4v not found)

Week 5

19 September 2011 lecture: (file:Lecture_11_-_Cellular.m4v not found) 21 September 2011 lecture: (file:Lecture_12_-_Cellular.m4v not found) 23 September 2011 lecture: (file:Lecture_13_-_Cellular.m4v not found)

Microscale Energy Transport

A great deal of research in heat transfer is devoted to understanding energy transport at reduced scales. This page serves as a starting point for graduate-level content related to microscale heat...

Abstract In this topic we derive the quantum of thermal conductance, and along the way, concepts related to phonon density of states and spatial dimensionality are discussed and applied. The end result is a simple expression for how much heat a given acoustic phonon branch, or polarization, can...

Literature Review: Boiling and Evaporative Heat Transfer

This ‘topic’ page is intended for the consolidation of literature summaries on the title topic. Typically, a given paper’s bibliographic information and abstract will be posted. Please provide web links where possible. Also, a contributor may wish to add a brief commentary as...

Purdue ME 606: Radiation Heat Transfer Main Page

About This PageThis page on thermalHUB.org contains syllabus materials related to a PhD-level course entitled “Radiation Heat Transfer” offered at Purdue University in alternative years. The information here will be updated both by the instructor and the students in the course, including...

IEEE CPMT TC-Therm

About this pageThis page serves as an information resource for the IEEE committee on …

IEEE CPMT Thermal Management & Thermomechanical Design Technical Committee (CPMT TC-Therm)

IEEE CPMT site CPMT Technical Committee Thermal Management and Thermo-Mechanical Design TC The Thermal Management and Thermomechanical Design Technical Committee is concerned with all aspects of thermal, thermo-mechanical, electro-thermal phenomena related to electronic/microelectronics...

Derivation of Planck's Law

This page provides a brief derivation of Planck’s law from basic statistical principles. For more information, the reader is referred to the textbook by Rybicki and Lightman (Radiative Processes in Astrophysics, Wiley, 2004) [1].

Purdue ME 606: Introduction

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Purdue ME 606: Radiation intensity, Surface properties, Kirchoff's Law (Lecture 3)

Radiation Intensity Radiation intensity is the energy per unit time …. Surface Properties Diffuse (Lambertian) Surface A surface is diffuse if the intensity is emitted uniformly in all directions (theta and phi). From equation (a) when a surface emits diffusely the intensity...

Purdue ME606: EM Field Theory

Electromagnetic Field Theory Maxwell Equations where: ε is electrical permittivity is electric field vector ρf is free electron density where: μ is magnetic permeability is magnetic field vector where: t is time σe is electrical conductivity We will...

Purdue ME 606: View Factors

View Factors (or Shape Factors) F1→2 is the fraction of energy leaving surface 1 that arrives at surface 2 Assume black surfaces flux leaving 1: Eb1 total leaving 1: A1Eb1 amount arriving at 2: A1Eb1F1→2 absorbed at 2: A1Eb1F1→2 amount leaving 2 that arrives at 1: ...

Purdue ME 606: Reflection from Surfaces

Reflection of ideal surfaces θi = θr

Purdue ME 606: Solar Constant and Emissivity (Lecture 4)

The Solar Constant The solar constant is the heat flux from the Sun. Known: T=5762K; Radius of Sun, RS = 6.96x10 − 8m; SES = 1.496x1011m; (solar constant) Emissivity Metals: good reflector due to free electron usually poor emitter (2 figs) Gray Surface No wave...

Purdue ME 606: Enclosure Characteristics (Lecture 9)

Black Enclosures For an enclosure with N black surfaces, the energy leaving a surface i is qi(leaving) = EbiAi. The energy arriving from another surface (noted as j) equals qi = EbjAjFji. For all N surfaces the net heat incident on surface i is, . Thus, the net energy flow to surface i in an...

VU ME248: Types of Differential Equations

Partial Differential Equations In a partial differential equation, the dependent variable depends on two or more independent variables. The Laplace equation is a PDE, because f is a function of two variables; x and y. Ordinary Differential Equations In an ordinary differential equation, the...