1. Date of download: 9/19/2016 Copyright © ASME. All rights reserved. From: Detailed Heat Transfer Measurements Inside Rotating Ribbed Channels Using the Transient Liquid Crystal Technique J. Thermal Sci. Eng. Appl. 2012;4(1):011002-011002-11. doi:10.1115/1.4005604 Typical temperature step response of the air in the test section when the flow direction is switched Figure Legend:

2. Date of download: 9/19/2016 Copyright © ASME. All rights reserved. From: Detailed Heat Transfer Measurements Inside Rotating Ribbed Channels Using the Transient Liquid Crystal Technique J. Thermal Sci. Eng. Appl. 2012;4(1):011002-011002-11. doi:10.1115/1.4005604 W-shaped rib geometry. The flow path is from bottom to top of the rib. Figure Legend:

3. Date of download: 9/19/2016 Copyright © ASME. All rights reserved. From: Detailed Heat Transfer Measurements Inside Rotating Ribbed Channels Using the Transient Liquid Crystal Technique J. Thermal Sci. Eng. Appl. 2012;4(1):011002-011002-11. doi:10.1115/1.4005604 A standard turbine blade with internal coolant channels. (Left) cross section of blade. (Right) Cutaway view of coolant channels (modified from Parsons []). Figure Legend:

4. Date of download: 9/19/2016 Copyright © ASME. All rights reserved. From: Detailed Heat Transfer Measurements Inside Rotating Ribbed Channels Using the Transient Liquid Crystal Technique J. Thermal Sci. Eng. Appl. 2012;4(1):011002-011002-11. doi:10.1115/1.4005604 (Top) Schematic of the test section. First-pass is where the coolant air enters. Second-pass is where the coolant air exits. Average heat transfer calculations are made in regions 1–12. Region 13 is for calibration. (Bottom) View of the test section looking down the channels. Figure Legend:

5. Date of download: 9/19/2016 Copyright © ASME. All rights reserved. From: Detailed Heat Transfer Measurements Inside Rotating Ribbed Channels Using the Transient Liquid Crystal Technique J. Thermal Sci. Eng. Appl. 2012;4(1):011002-011002-11. doi:10.1115/1.4005604 Computer aided drafting (CAD) drawing of the rotating rig support frame. The shown test section is arbitrary, as many types may be inserted. Figure Legend:

6. Date of download: 9/19/2016 Copyright © ASME. All rights reserved. From: Detailed Heat Transfer Measurements Inside Rotating Ribbed Channels Using the Transient Liquid Crystal Technique J. Thermal Sci. Eng. Appl. 2012;4(1):011002-011002-11. doi:10.1115/1.4005604 Schematic of the test rig. A camera is mounted onto the test section for filming the liquid crystal color change. Figure Legend:

7. Date of download: 9/19/2016 Copyright © ASME. All rights reserved. From: Detailed Heat Transfer Measurements Inside Rotating Ribbed Channels Using the Transient Liquid Crystal Technique J. Thermal Sci. Eng. Appl. 2012;4(1):011002-011002-11. doi:10.1115/1.4005604 The test sections used for the present study. Schematic of the test section with: (top) smooth wall, (middle) 90 deg ribbed walls, and (bottom) w-shaped ribbed walls. Figure Legend:

8. Date of download: 9/19/2016 Copyright © ASME. All rights reserved. From: Detailed Heat Transfer Measurements Inside Rotating Ribbed Channels Using the Transient Liquid Crystal Technique J. Thermal Sci. Eng. Appl. 2012;4(1):011002-011002-11. doi:10.1115/1.4005604 Side view of the ribs. “P” is the pitch of the ribs, “e” is the height of the ribs, and “H” is the height of the channel. Figure Legend:

9. Date of download: 9/19/2016 Copyright © ASME. All rights reserved. From: Detailed Heat Transfer Measurements Inside Rotating Ribbed Channels Using the Transient Liquid Crystal Technique J. Thermal Sci. Eng. Appl. 2012;4(1):011002-011002-11. doi:10.1115/1.4005604 A typical calibration curve relating the hue of the liquid crystal to the wall temperature Figure Legend: