Analysis of Wind-Induced Vibration Response of Transmission Wire Under Crosswind in Canyon Terrain

Round 1

Reviewer 1 Report

Comments and Suggestions for Authors

See attached file.

Comments for author File: Comments.pdf

Author Response

Comments 1：The numerical complexities of such studies, however, prevent the reader from grasping what will really matter in the end for real transmission lines. To alleviate this effect, the authors should put the conclusions of their study in the perspective of current design methods. What difference does the study make in the end? What about bundled conductors? 

Response 1：Thank you for pointing out this，we agree with this. We have added some explanations at line27，line76 and line503 to clarify our study priorities.

Comments 2：Another important aspect that is not discussed is the effect that atmospheric icing or rain will have on the aerodynamics of the cables. For example, in the introduction, line 27, allusion is made to cable breakages. In fact, perhaps the most likely outcome is line tripping due to lack of clearance between wires rather than cable breakage, unless gales are generated in winter conditions when the line is already overloaded with some form of atmospheric icing. This is worth mentioning because wire breakage should not occur in bare line conditions due to their reserve strength.

Response 2：Thank you for your comment，we do need to complement the study of the ice-coated wire breakage problem. But I'm sorry that we don't have enough time to conduct relevant experimental research at the moment，we will complete relevant studies in the future.(line 506)

Author Response File: Author Response.pdf

Reviewer 2 Report

Comments and Suggestions for Authors

This study addresses the critical issue of developing a computational method for analyzing the strong bidirectional coupling of vibrations in canyon terrain based on bidirectional coupling theory. It also investigates the vibration characteristics of a transmission wire under step and pulse wind speed conditions. Simulation results show that under varying step wind speed conditions, the wire's displacement trend remains consistent, and the oscillation period remains unchanged. Furthermore, under pulse wind speed conditions, the wire displacement exhibits periodic behavior influenced by pulse width, while pulse amplitude affects the displacement magnitude.

The findings of this study provide valuable insights for assessing the load-bearing capacity of transmission lines under different wind conditions

But I have the following comments

1. After mentioning “finite element simulation software STAR-CCM+” in Line 146, a reference should be added.
2. Please specify the type of liquid considered in the study, including its density and viscosity parameters.
3. Clarify how the temperature T is incorporated into the governing equations, not just in the interaction conditions.
4. Additional details on the volume force f should be provided (Equations (2) and (5))
5. Explain how the wind field (forced influence) is incorporated into the governing equations.
6. Specify the type of finite elements used in the numerical simulation for both the wire and the wind field. Include details such as the number of nodes and the type of approximations used within the elements.
7. It would be helpful to explain how the turbulence zone was modeled and whether any specific considerations were applied in the finite element method.
8. Provide additional details about the problem from reference [24], including size and material properties, to clarify why it was selected for calculation and comparison.
9. Adding results that demonstrate the convergence of the proposed method would strengthen the study.
10. Clarify how Equation (7) was derived. A reference should be added, or an analysis should be included to justify its formulation.
11. Figures 6, 13, 14 should be slightly enlarged to improve readability and better illustrate the results.
12. In the conclusion, it would be more appropriate to use "the" instead of "a" in most cases for grammatical accuracy.
13. The conclusion should include a brief discussion on potential directions for further research in this area.

Author Response

Thank you for your review and we are very agree with your comments.

Please see the attachment.

Author Response File: Author Response.pdf

Round 2

Reviewer 2 Report

Comments and Suggestions for Authors

The paper can be published in the MDPI Journal in its present form.

Thank you for taking my comments into account

       

Author Response

It is a great honor to get your recognition of this work and your comments have greatly improved the quality of the paper.