Velocity Measurements in Highly Aerated Flow on a Stepped Chute without Sidewall Constraint Using a BIV Technique
, Soledad Estrella 1, Jorge Matos 2, Ernest Bladé 1, Eduardo MartÃnez-Gomariz 1 and Enrique Bonet Gil 1
Round 1
Reviewer 1 Report
Reviewer compliments authors on their thorough investigation as the analysis of highly aerated flow on a stepped chute is of great importance for hydraulic engineering. However, the authors should consider the following remarks in their next revision:
1. English should be improved and authors should use appropriate technical terms (e.g. in lines 121-122 authors state: "...storing each pixel as 8 zeros and ones... which should be stated "storing each pixel in 8 bits").
2. Authors should clearly state that their method (in contrast to PIV) doesn't discern the velocity plane. E.g. side view velocities can belong to different longitudinal sections.
Author Response
Reviewer compliments authors on their thorough investigation as the analysis of highly aerated flow on a stepped chute is of great importance for hydraulic engineering. However, the authors should consider the following remarks in their next revision:
The authors want to thank Reviewer #1 for his kind compliment.
- English should be improved and authors should use appropriate technical terms (e.g. in lines 121-122 authors state: "...storing each pixel as 8 zeros and ones... which should be stated "storing each pixel in 8 bits").
English grammar and spelling issues were corrected by a native editor. Nevertheless, we understand that the suggestion of Reviewer #1 in line 121-122 is more appropriate for a scientific paper. Done.
- Authors should clearly state that their method (in contrast to PIV) doesn't discern the velocity plane. E.g. Side view velocities can belong to different longitudinal sections.
This clarification has been included in the line 152-153.
Reviewer 2 Report
A few minor suggestions and issues for the authors to deal with are noted in the attached PDF.
Comments for author File: 
Comments.pdf
Author Response
Page 1. Suggested changes in lines 13, 14, 15, 29 and 30.
Done.
Page 2. Suggested changes in lines 62 and 63.
Done
Page 3. Suggested changes in line 101, 103 and 129.
Done
Page 4. Suggested change in title of 157.
Done
Page 9. Figure 11. Perhaps different colors could be used to make it easier to identify each data set
Done
Page 9. Suggested changes in line 270 and 271.
Done
Page 13. Figure 17. There appear to be 2 sets of "B" data, but the reason for this is not explained in the text or caption.
In the caption of Figure 17 and in line 333 a comment about that matter has been included.
Page 14. Figure 18 is not mentioned or discussed in the text.
The comment from line 341 to 343 is now included.
