• 5

*(t) Also defined as the inverse (square) of the quantity shown.

Name(s)

Symbol

Definition

Significance

Hartmann

H

BL/iw)1/2 = (Rm ReC)1/2

(Magnetic force/

dissipative force)1/2

Knudsen

Kn

X/L

Hydrodynamic time/ collision time

Lewis

Le

K/T>

*Thermal conduction/molecular diffusion

Lorentz

Lo

V/c

Magnitude of relativistic effects

Lundquist

Lu

POLVA/V

Al Rm

J X B force/resistive magnetic diffusion force

Mach

M

V/Cs

Magnitude of compressibility effects

Magnetic Mach

Mm

v/vA = Ar1

(Inertial force/magnetic force)1/2

Magnetic Reynolds

Rm

po LV/r]

Flow velocity/magnetic diffusion velocity

Newton

Nt

F/pL2V2

Imposed force/inertial force

Nusselt

N

aL/k

Total heat transfer/thermal conduction

Peclet

Pe

LV/k

Heat convection/heat conduction

Poisseuille

Po

D2 Ap/pLV

Pressure force/viscous force

Prandtl

Pr

V ! K

Momentum diffusion/ heat diffusion

Rayleigh

Ra

gH3(3AT/ui<i

Buoyancy force/diffusion force

Reynolds

Re

LV/u

Inertial force/viscous force

Richardson

Ri

(NH/AV)2

Buoyancy effects/ vertical shear effects

Rossby

Ro

V/2QL sin A

Inertial force/Coriolis force

Schmidt

Sc

u/V

Momentum diffusion/ molecular diffusion

Stanton

St

a/pCpV

Thermal conduction loss/ heat capacity

Stefan

Sf

crLT3/k

Radiated heat/conducted heat

Stokes

s

»/L2f

Viscous damping rate/ vibration frequency

Strouhal

Sr

fL/V

Vibration speed/flow velocity

Taylor

Ta

(2 VtL2/v)2 Rx'2(AR)3'2

<nM

Centrifugal force/viscous force (Centrifugal force/ viscous force)1/2

Thring, Boltzmann

Th, Bo

pcpV/eaT3

Convective heat transport/ radiative heat transport

Weber

W

pLV2/S

Inertial force/surface tension

Авторы: 1379 А Б В Г Д Е З И Й К Л М Н О П Р С Т У Ф Х Ц Ч Ш Щ Э Ю Я

Книги: 1908 А Б В Г Д Е З И Й К Л М Н О П Р С Т У Ф Х Ц Ч Ш Щ Э Ю Я