Experimental Study on Coherent Structures by Particles Suspended in Half-Zone Thermocapillary Liquid Bridges: Review
Round 1
Reviewer 1 Report
This is a very interesting review of the fascinating phenomena that can be produced by supercritical surface-tension driven flow in liquid bridges in terms of particle (tracer) accumulation. It fits perfectly the aims and objectives of the special issue on Thermal Flows. Publication is recommended.
Author Response
Dear Reviewer1
I would like to express my sincere appreciation to the reviewer1 for the comments on my manuscript. I'm so happy and glad to see such warm and encouraging comments.
After the comments by the reviewers, I corrected the manuscript as much as possible (you find the corrected/added part in magenta). I hope that the revisions in the manuscript will be sufficient to make my manuscript suitable for publication in Fluids.
Reviewer 2 Report
The paper was well written. I have only minor corrections:
- It is advisable to not cite the references in the Abstract.
- Can you explain in a few sentences on how materials and methods influence the results in Section 2? For example, effect of different materials and liquid and Pr number on PAS formation.
Author Response
Dear Reviewer2
I would like to express my sincere appreciation to the reviewer1 for the comments on my manuscript. I'm so happy and glad to see such warm and encouraging comments.
After the comments by the reviewers, I corrected the manuscript as much as possible (you find the corrected/added part in magenta). The corrections after the comments/questions by the reviewer2 were highlighted in blue. I hope that the revisions in the manuscript and my accompanying responses will address satisfactory the point that the reviewer pointed out, and will be sufficient to make our manuscript suitable for publication in Fluids.
Comment #1: It is advisable to not cite the references in the Abstract.
[reply] Thank you for the advise. I deleted the reference from the abstract in the revised mansucript.
Comment #2: Can you explain in a few sentences on how materials and methods influence the results in Section 2? For example, effect of different materials and liquid and Pr number on PAS formation.
[reply] Thank you for the question. This is an essential question that we have dealt with. We conducted a series of microgravity experiments in the International Space Station, and we have worked hard to prepare the manuscript on the coherent structure in the liquid bridge of Pr > 100. At present we do not have any results to indicate the effect of Pr. In the revised manuscript I added the sentences as follows at the very end of the section 2. I would be happy if this would satisfy the reviewer2.
<<sentences inserted at the very end of the section 2 in the revised manuscript>>
The existing research has dealt with the high Pr fluids in a range of 1 ≲ Pr ≲ 200. In the following, the effect of Pr on the coherent structures and the thermal flow field will be introduced, especially in the cases of Pr ≲ 30. Microgravity experiments [21,43–50] dealt with higher Pr than those in the terrestrial experiments thus far. Further research is indispensable to discuss the Pr effect on the coherent structures and the oscillatory convection induced by the hydrothermal wave instability in the case of Pr > 100.
