Dimensional Groups

Question 1

drag Coefficient

Answer 1

drag force / (projected area x velocity head)

Question 2

fanning friction factor

Answer 2

pipe wall shear stress / velocity head

Question 3

froude number

Answer 3

inertial force / gravitational force

Question 4

reynolds number

Answer 4

inertial force / viscous force

Question 5

weber number

Answer 5

inertial force / surface-tension force

Question 6

nusselt number

Answer 6

convective heat transfer / conductive heat transfer

Question 7

peclet number for heat transfer

Answer 7

bulk transfer of heat / conductive heat transfer

Question 8

prandtl number

Answer 8

momentum diffusivity / thermal diffusivity

Question 9

stanton number for heat transfer

Answer 9

heat transfer / thermal capacity

Question 10

lewis number

Answer 10

thermal diffusivity / mass diffusivity

Question 11

peclet number for mass transfer

Answer 11

bulk transfer of mass / molecular diffusion

Question 12

schmidt number

Answer 12

momentum diffusivity / mass diffusivity

Question 13

sherwood number

Answer 13

convective mass transfer / molecular diffusion

Question 14

stanton number for mass transfer

Answer 14

mass transfer / mass capacity