Lewis number


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Lewis number

[′lü·əs ‚nəm·bər]
(physics)
A dimensionless number used in studies of combined heat and mass transfer, equal to the thermal diffusivity divided by the diffusion coefficient. Symbolized Le ; NLe .
Sometimes, the reciprocal of this quantity.
References in periodicals archive ?
In addition, Greg King moved to Billesley from Worcester, while James Tideswell and Rob Lewis number London Welsh among their former homes.
It is known that differential molecular transport effects, as described by the Lewis number (ratio of thermal diffusion and mass diffusion) that is related to stretch effects in laminar flames, affect the combustion behavior of turbulent premixed flames [32, 33] at (mainly) fuel-lean conditions.
The effective Lewis number is calculated following the procedure described in [34, 35].
4), that as the buoyancy parameter N increases the concentration profiles decrease concentration profiles The heat transfer coefficient as a function of Lewis number Le for varying N , Mn without dispersion ( Pe Pe 0 ) and F0 Pe 0.
To develop a turbulent reacting flow model that captures the underlying physical and chemical processes in flame development, the pressure and Lewis number effect;
0] which is function of the Lewis number and standardized porosity; for N < [N.
Finally, to apply the heat and mass transfer analogy to the dehumidifying process, it is necessary to clarify and distinguish the definitions of Lewis number (Le) and Lewis relation ([N.
The bonus tracks are Jerry Lee Lewis numbers to be included on the forthcoming album with Union Avenue called It's Just A Flash In The Pan.
We just got together for a laugh and started doing Chuck Berry and Jerry Lee Lewis numbers.
Lewis numbers the entries across her trilogy, with this third volume starting with 257 and ending at 442; RISM numbers (Repertoire international des sources musicales, A/I/1-9, Einzeldrucke vor 1800, ed.
Both men had worked with astronauts Michael Anderson, David Brown, Kalpana Chawla and Ilan Ramon off and on for the past two years on the research project known as SOFBALL, short for Structure of Flame Balls at Low Lewis numbers - a series of experiments studying how tiny balls of flame react in zero gravity.