A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

LEWIS NUMBER

DOI: 10.1615/AtoZ.l.lewis_number

The Lewis Number (Le) is defined as the ratio of the Schmidt Number (Sc) and the Prandtl Number (Pr). The Lewis Number is also the ratio of thermal diffusivity and molecular diffusivity as is found from the definitions of Schmidt and Prandtl Number, as follows:

(1)

where κ = (λ/ρcp) is the Thermal Diffusivity. The Lewis Number is important in determining the relationship between mass and heat transfer coefficients (the Lewis Relationship).

浏览次数:29310 创建日期:2 February 2011 最后修改日期:11 February 2011 © Copyright 2010-2019 返回顶部