History and current status of microscale flow research

2008-01-23View Original

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At the microscale, some forces and effects that are ignored at the macroscale play an important role, leading to significant differences between microscale and macroscale phenomena. As a result, the theories and simplifying assumptions used in conventional analysis can no longer explain flow phenomena at the microscale. For example, under macroscopic conditions, a relative roughness of 5% can be ignored, whereas at the microscale, a smaller relative roughness has a significant impact on gas flow; moreover, the effect of gas thinness also reduces the resistance to gas flow.

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History and current status of microscale flow research

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