# Introduction to transport phenomena

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==Continuum Flow Limitations== | ==Continuum Flow Limitations== | ||

+ | The transport phenomena are usually modeled in continuum states for most applications – the materials are assumed to be continuous and the fact that matter is made of atoms is ignored. When the characteristic dimension, <big><math>L</math></big>, is small compared to the molecular mean free path, <big>λ</big>, which is defined as average distance between collisions for a molecule, the traditional Navier-Stokes equation and the [[Energy|energy]] equation based on the continuum assumption have failed to provide accurate results. The continuum assumption also fails when the gas is at very low pressure (rarefied). | ||

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''See Main Article'' [[Continuum flow limitations]] | ''See Main Article'' [[Continuum flow limitations]] | ||

## Revision as of 10:31, 26 June 2010

## Continuum Flow Limitations

The transport phenomena are usually modeled in continuum states for most applications – the materials are assumed to be continuous and the fact that matter is made of atoms is ignored. When the characteristic dimension, *L*, is small compared to the molecular mean free path, λ, which is defined as average distance between collisions for a molecule, the traditional Navier-Stokes equation and the energy equation based on the continuum assumption have failed to provide accurate results. The continuum assumption also fails when the gas is at very low pressure (rarefied).

*See Main Article* Continuum flow limitations

## Momentum, Heat, and Mass Transfer

*See Main Article* Momentum, Heat, and Mass Transfer

## Introduction to Momentum Transfer

*See Main Article* Introduction to Momentum Transfer

## Introduction to Heat Transfer

*See Main Article* Introduction to Heat Transfer

## Introduction to Mass Transfer

*See Main Article* Introduction to Mass transfer

## Multiphase Systems and Phase Changes

*See Main Article* Multiphase Systems and Phase Changes

## Multiphase Systems and Phase Changes

*See Main Article* Multiphase Systems

## Transport Phenomena in Micro- and Nanoscales

*See Main Article* Transport Phenomena in Micro- and Nanoscales

## Dimensional Analysis

*See Main Article* Dimensional Analysis

## Scaling

*See Main Article* Scaling