TPFL Calibration Facilities

TPFL: The Turbomachinery Performance and Flow Research LaboratoryTexas A&M University

M. T. Schobeiri

TPFL Calibration Facilities

TPFL Facilities Include:

Facility for calibrating five hole probes, single and cross hot wire probe

Facility for calibrating pressure and temperature sensitive paints

Facility for calibrating surface mounted hot films

More on next slide

TPFL: The Turbomachinery Performance and Flow Research LaboratoryTexas A&M University

M. T. Schobeiri

TPFL Calibration of Five Hole-, Single- and and X-wire Probes

Turn Table for Probe Alignment

Probe Tip and Flow Alignment

TPFL Five- Hole Probe Calibration Facility

Turn Table with Two Stepper Motors and Controllers for Pitch and Yaw Traversing

Project DE-FOA-0000031October 2009

1.510.5

0-0.5-1-1.5

-2

Q1 -2-1.5

-1-0.5

00.5

11.5

Q2

-20

-20-15

-15-10

-10-5

-50

05

510

1015

1520

20

PIT

CH

PIT

CH

q1q2_pitch.txt, X , Y , Z Rank 1 Eqn 409 Chebyshev X,Y Bivariate Polynomial Order 10

r^2=0.99980762

1.510.5

0-0.5-1-1.5

-2

Q1 -2-1.5

-1-0.5

00.5

11.5

Q2

-20

-20-15

-15-10

-10-5

-50

05

510

1015

1520

20

YA

W YA

W

q1q2_yaw.txt, X , Y , Z Rank 1 Eqn 609 Sigmoid Series Bivariate Order 10

r^2=0.99989426

Calibration Precision Examples: Results, Station 4

TPFL: The Turbomachinery Performance and Flow Research LaboratoryTexas A&M University

M. T. Schobeiri

S1 S2 S3R1 R2 R3

Sta

tion

1

Sta

tion

2

Sta

tion

3

Sta

tion

4

Sta

tion

5

Sta

tion

6

Sta

tion

7

Flow in

2015

105

0-5-10-15

PITCH-20

-15

-10

-50

510

15

YAW

0.60.60.650.650.70.70.750.750.80.80.850.850.90.90.950.95111.051.05

Q3 Q

3

pitchyaw_q3.txt, X , Y , Z Rank 1 Eqn 409 Chebyshev X,Y Bivariate Polynomial Order 10

r^2=0.99982697

-20-15

-10-5

05

1015

PITCH

2015

105

0-5

-10-15

YAW

0.250.25

0.50.5

0.750.75

11

1.251.25

1.51.5

1.751.75

Q4

Q4

pitchyaw_q4.txt, X , Y , Z Rank 1 Eqn 409 Chebyshev X,Y Bivariate Polynomial Order 10

r^2=0.99992019

2015105

0-5-10-15

PITCH -20-15

-10-5

05

1015

YAW

-0.5

-0.50

00.5

0.5

1

1

1.5

1.5

Q5

Q5

pitchyaw_q5.txt, X , Y , Z Rank 1 Eqn 524 Fourier Series Bivariate Order 2x5

r^2=0.99995789

Project DE-FOA-0000031October 2009

10.75

0.50.25

0-0.25

Q1-0.75

-0.5

-0.25

00.25

Q2

-20 -20

-15 -15

-10 -10

-5 -5

0 0

5 5

10 10

15 15

20 20

YA

W

YA

W

q1q2_yaw.txt, X , Y , Z Rank 1 Eqn 409 Chebyshev X,Y Bivariate Polynomial Order 10

r^2=0.99975187

10.75

0.50.25

0-0.25

Q1-0.75

-0.5

-0.25

00.25

Q2

-20 -20

-15 -15

-10 -10

-5 -5

0 0

5 5

10 10

15 15

20 20

PIT

CH

PIT

CH

q1q2_pitch.txt, X , Y , Z Rank 1 Eqn 409 Chebyshev X,Y Bivariate Polynomial Order 10

r^2=0.99995848

Calibration Results, Station 5

TPFL: The Turbomachinery Performance and Flow Research LaboratoryTexas A&M University

M. T. Schobeiri

-20-15-10-5

051015

PITCH 2015

105

0-5

-10-15

YAW

0.925

0.9250.95

0.950.975

0.9751

11.025

1.0251.05

1.05

Q3

Q3

pitchyaw_q3.txt, X , Y , Z Rank 1 Eqn 409 Chebyshev X,Y Bivariate Polynomial Order 10

r^2=0.99767895

-20-15-10-5

051015

PITCH 2015

105

0-5

-10-15

YAW

0.2

0.20.3

0.30.4

0.40.5

0.50.6

0.60.70.70.80.80.90.911

Q4

Q4

pitchyaw_q4.txt, X , Y , Z Rank 1 Eqn 409 Chebyshev X,Y Bivariate Polynomial Order 10

r^2=0.99994729

2015

105

0-5

-10-15

PITCH

-20-15

-10-5

05

1015

YAW

0.5 0.5

0.6 0.6

0.7 0.7

0.8 0.8

0.9 0.9

1 1

1.1 1.1

Q5

Q5

pitchyaw_q5.txt, X , Y , Z Rank 1 Eqn 409 Chebyshev X,Y Bivariate Polynomial Order 10

r^2=0.99992738

S1 S2 S3R1 R2 R3

Sta

tion

1

Sta

tion

2

Sta

tion

3

Sta

tion

4

Sta

tion

5

Sta

tion

6

Sta

tion

7

Flow in

TPFL Calibration of PSP, TSP

Camera

Thermo-couple

Laser(488nm)

Heater

Vacuum Chamber

Vacuum Pump

Direction of air flow

Emitted light from TSPIlluminating laser light

PC

PSP coated test sample

Pressure Gage

Long pass filter(570 nm)

Setup for Pressure and Temperature Sensitive Paints PSP& TSP Calibration

TPFL: The Turbomachinery Performance and Flow Research LaboratoryTexas A&M University

M. T. Schobeiri

TPFL Calibration Facilities

Calibration of TSP

T(C)I/I

ref

30 40 50 60 700.4

0.5

0.6

0.7

0.8

0.9

1

h=3cmh=4cm20exph=4cm40exph=5cmh=5.5cmh=4.5cm5exp

Calibration of Pressure, Temperature Sensitive Paints, Results

TPFL: The Turbomachinery Performance and Flow Research LaboratoryTexas A&M University

M. T. Schobeiri

TSP-Application to Turbine Blade, Results

Comparison of (a) temperatures from TSP results with thermocouple results for, (b) heat transfer coefficient profiles from TSP with LCT

s/so

T(

C)

0 0.2 0.4 0.6 0.8 10

10

20

30

40

50

60

TSPThermocouple

Re=250,000, =3.18 (80 mm), Tu=1.9% (without grid)

s/so

h(W

/m2K

)

0 0.2 0.4 0.6 0.8 10

20

40

60

80

100

120

140

TSPLCT

Re=250,000, =3.18 (80 mm), Tu=1.9% (without grid)

TPFL: The Turbomachinery Performance and Flow Research LaboratoryTexas A&M University

M. T. Schobeiri

Calibration of Surface Mounted Hot Films

Surface mounted hot-film sensors attached to a low pressure Turbine blade.

Multi-Channel anemometer used Periodic unsteady inlet flow

condition. Anemometer: Samples were taken at a

rate of 10 kHz for each of the 50 revolutions of the wake generator.

The data were ensemble-averaged with respect to the rotational period of the wake generator.

Connection pins to anemometer-switch boardBlade fixture to test sectionHot film probe embedded in a foil, see next slide

TPFL: The Turbomachinery Performance and Flow Research LaboratoryTexas A&M University

M. T. Schobeiri

Calibration of Surface Mounted Hot Films

T(C)

R(

)

20 40 60 80 100 1208.5

9

9.5

10

10.5

11

11.5

12

12.5

13

Sensor 34Sensor 35Sensor 37Sensor 38

Calibration curve for hot film sensors

Hot Film SensorLength: 2.00mm

Blade with Surface mounted hot film foil installed in test section

TPFL: The Turbomachinery Performance and Flow Research LaboratoryTexas A&M University

M. T. Schobeiri