Measurements in Transitional Boundary Layers Under High Free [PDF]

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CHAPTER

To expand stages

HIGH

on the results

of transition,

section

7:

presented

a case with a longer

was left in the geometry

the inlet velocity free-stream

was reduced

velocities

dUcw/dx=29

is changed.

numbers

and higher

to half the value

acceleration

As in the two high-FSTI

the present

case was two-dimensional below

are also available

EXPERIMENTAL

The free-stream

at ten streamwise

gradient

measurement

parameters,

Rex=8.Tx

105.

are listed

The acceleration

of the test wall to 0.80x10

airfoils

in Volino

and Simon

in Chapter

to half the values remains

doubled. to extend

described

in a time-averaged

the test section

velocity

important

modem

of the

constant

The lower

Some

(1994b,

as the

Reynolds zone

the boundary

sense.

6, and

the local

the transition

above,

in

layer

in

of the results

1995b,

1995c).

are roughly

of 5.2 rn/s and a nominal

was held at 14.35 s-1.

stations.

The locations

in Table

7.1.

parameter

Profile

of these

from K=8.6x station.

Reynolds

the same.

253

numbers

of

acquired with other

station,

10 -6 at the leading from

in Fig. 7.1.

the same as that of the CF6 airfoil,

The chord

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The K profile

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