class 23 - Free Convection: General Considerations and...

Info iconThis preview shows pages 1–6. Sign up to view the full content.

View Full Document Right Arrow Icon
Click to edit Master subtitle style 8/13/11 Free Convection: General Considerations and Results for Chapter 9 Sections 9.1 through 9.6.2
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
8/13/11 Pertinent Dimensionless Parameters Ø Grashof Number: = Buoyancy force/viscous force Ø Rayleigh Number: 2 3 ) ( ν β L T T g Gr s L - να 3 ) ( Pr L T T g Gr Ra s L L - =
Background image of page 2
8/13/11 Vertical Plates Free Convection Boundary Layer Development on a Heated Plate : Ø Ascending flow with the maximum velocity occurring in the boundary layer and zero velocity at both the surface and outer edge. ( 29 ? s T T < The fluid close to the plate is _________ the fluid beyond it. a) Less dense than b) More dense than c) As dense as
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
8/13/11 Form of the x -Momentum Equation for Laminar Flow Net Momentum Fluxes ( Inertia Forces) Buoyancy Force Viscous Force Ø Temperature dependence requires that solution for u ( x,y ) be obtained concurrently with solution of the boundary layer energy equation for T ( x,y ). The solutions are said to be coupled .
Background image of page 4
If we need to couple these two equations, what do we need to use? a)
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 6
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 19

class 23 - Free Convection: General Considerations and...

This preview shows document pages 1 - 6. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online