Vortex Formation Times in the Glottal Jet, Measured in a Scaled-Up Model

Round 1

Reviewer 1 Report

Comments on manuscript “Vortex formation times in the glottal jet, measured in a scaled up model”

 

This study focuses on characterizing the timing of instability vortices on the glottal jet, and how this timing varies with Reynolds number and reduced frequency of vibration.

Major points:

What is the innovation of this study? There is no the innovation and implementation in the present study. The analysis is very poor (only 9 pages) and the conclusions are without any interesting point. I think this manuscript is very poor and must be improved before resubmission.

Small points:

1. The number of case studies are very small.
2. The conclusions are very poor and must be improved.

Author Response

see the attachment

Author Response File: Author Response.docx

Reviewer 2 Report

This paper deals with the formation time of vortices in the glottal jet, where the jet is mimicked using water flow theough a scaled-up constriction. I think the paper is well written. The main conclusion is an important one, where the author finds that the time of vortex formation is strongly dependent on the reduced frequency of vibration. In my own opinion the paper is a good one and deserves to be published as it is.

Author Response

see the attchment

Author Response File: Author Response.docx

Reviewer 3 Report

This article describes the timing of instability vortex formation on the glottal jet. It is an interesting work and focuses on the details of jet instability vortex structure, especially concerning contributions of jet instability vortices to the broad-band component of the jet velocity. However, I'm a bit disappointed by the lack of context. The author used published DPIV data, and it seems this article is simply data treatment and discussion. I would recommend that the authors do a more comprehensive analysis, maybe such as 1. including error analysis, N=10 in Table 1 is enough to get the results? 2. the analysis of glottal jet structure in terms of the strength and path of jet vorticity. It would be better if the author could explain more about the relationship between "high-frequency content on the glottal jet velocity waveforms at the glottis exit" and "the passage of jet instability vortices past that location" to characterize vortex formation time, which is the key to this article. Overall, I would suggest accepting this article with minor revision.

Minor comments:
 * Line 53： The number (4) should be (3);
 * Line 96：The format of "T0" and "uss" should be consistent.

Author Response

see the attachment

Author Response File: Author Response.docx

Round 2

Reviewer 1 Report

The authors made changes to improve the structure of the manuscript, but I still believe that the paper must be rejected as an article. Maybe can be accepted as technical note, but not as an article.