Category
Diffusion Coefficient
9 items
Fourier Number for Mass Transfer
Wolfram Research
The Fourier number is a dimensionless number that characterizes transient heat conduction. Conceptually, it is the ratio of diffusive or conductive transport rate to the quantity storage rate, where the quantity may b...
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Lewis Number Using Thermal Diffusivity
Wolfram Research
The Lewis number is a dimensionless number defined as the ratio of thermal diffusivity to mass diffusivity. It is used to characterize fluid flows where there is simultaneous heat and mass transfer.
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Lewis Number Using Thermal Conductivity
Wolfram Research
The Lewis number is a dimensionless number defined as the ratio of thermal diffusivity to mass diffusivity. It is used to characterize fluid flows where there is simultaneous heat and mass transfer.
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Mean Free Path Using Pressure
Wolfram Research
The mean free path is the average distance traveled by a moving particle (such as an atom, a molecule or a photon) between successive impacts (collisions), which modifies its direction, energy or other particle proper...
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Mean Free Path Using Electron Density
Wolfram Research
The mean free path is the average distance traveled by a moving particle (such as an atom, a molecule or a photon) between successive impacts (collisions), which modifies its direction, energy or other particle proper...
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Péclet Number for Mass Transfer
Wolfram Research
The Péclet number is a class of dimensionless numbers relevant in the study of transport phenomena in a continuum. It is defined to be the ratio of the rate of advection of a physical quantity by the flow to the rate ...
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Schmidt Number Using Kinematic Viscosity
Wolfram Research
The Schmidt number is a dimensionless number defined as the ratio of momentum diffusivity (kinematic viscosity) and mass diffusivity, and is used to characterize fluid flows in which there are simultaneous momentum an...
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Schmidt Number Using Dynamic Viscosity
Wolfram Research
The Schmidt number is a dimensionless number defined as the ratio of momentum diffusivity (kinematic viscosity) and mass diffusivity, and is used to characterize fluid flows in which there are simultaneous momentum an...
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Swelling Interface Number
Wolfram Research
The swelling interface number is important in describing the relationship between solvent penetration and solute diffusion.