Similarity Model Test on Stress and Deformation of Freezing Pipe in Composite Strata during Active Freezing
Round 1
Reviewer 1 Report
A comparative table identifying the issues addressed by each academic paper reviewed should be provided. Through this comparative table, authors must clearly describe the research gaps identified from the literature review analysis and document how the proposed methodology addresses them.
Row 137: a space is required between table and 1.
Please mention the future research directions and also the remaining open research questions.
The references don't respect the instructions for authors. It must be reediting.
Author Response
Dear Editor and Reviewer:
Thank you for your letter and for the reviewers’ comments concerning our manuscript. Those comments are all valuable and very helpful for revising and improving our paper, as well as the important guiding significance to our researches. We have studied comments carefully and have made correction which we hope meet with approval.
Please see the attachment.
Kind regards,
Yansen Wang
Author Response File: 
Author Response.docx
Reviewer 2 Report
The work undoubtedly has considerable applied significance. It addresses a problem occurring in real engineering situations. This should be appreciated. Question for the authors of the paper: have your results been verified (compared) with simulation results, e.g. using the finite element method?
Author Response
Dear Editor and Reviewers,
Thanks very much for taking your time to review this manuscript. I really appreciate all your comments and suggestions.
Please see the attachment.
Kind regards,
Yansen Wang
Author Response File: Author Response.docx
Reviewer 3 Report
The paper describes an experimental installation for freezing a well located in space, which has a sharp boundary between clay and sand. The well has the shape of a cylindrical sector. The authors believe that the installation they created can simulate the processes of a real well, which has the shape of a concentric cylinder. The difference between the geometries of model and real wells raises doubts about the validity of their statement. In this paper, the dependences of the distribution of temperatures and displacements on the spatial coordinates in the material of the real matrix are obtained. Therefore, the experimental data obtained are of some value, for example, for verification of a computer model. And then the simulation data can be transferred to a full-scale well. In connection with the above, I believe that the article can be accepted for publication after careful processing.
Questions.
1. On pages 116-127, the equations of the axisymmetric theory of elasticity are given (there are typos). It is necessary to specify how they are obtained and add boundary conditions.
2. Specify what the load cells measure: displacement or deformation. The graphs show the dependences of the dimensional magnitude (microns) and the deformation is written, whereas the deformation is a dimensionless quantity.
Author Response
Dear Editor and Reviewers,Thank you to the editor for arranging the review and for the valuable feedback provided by the reviewers.
The author has carefully answered the questions one by one according to the reviewer's requirements and made careful revisions to the article, with all modifications highlighted.
Please see the attachment
Due to your suggestions, the revised article has become better and readers can obtain more valuable information.
Thank you again for the help of the editor and reviewers.
Kind regards,
Yansen Wang
Author Response File: Author Response.docx
Round 2
Reviewer 3 Report
On the formulation of the boundary value problem of thermo-elasticity in the axisymmetric case
Relations between strain and displacements in a cylindrical coordinate system
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(1) |
Закон Гука
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(2) |
Equilibrium equations in a cylindrical coordinate system
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(3) |
In the axisymmetric case v=0, ∂θ=0, then the equilibrium equation
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(4) |
Expressions for strain through displacements
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(5) |
Hooke's law taking into account temperature strain
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(6) |
If the boundary value problem is set in stresses (4), then we get four unknowns (σr, σθ, σz, σrz) for two equations. Stresses are usually expressed in terms of strain and temperature according to formulas (6), and then deformations are determined in terms of displacements (u,w) and their derivatives according to formulas (5). As a result, two equations for two unknown functions (u,w) are obtained – this is called the Lame equations. These equations are solved in the domain: a<r<b; 0<θ<2π, 0<z<H, on the part of the boundary of which stresses can be set, and on the other part of the boundary displacements are set.
I had a question about boundary conditions. You have answered it partially.
So once again
1. What boundary conditions are set at least for a homogeneous cylinder?
The captions in Figures 10-12 contain the term "strain". This is a dimensionless quantity (ε), and values in micrometers are deposited along the ordinate axis. Therefore
2. What is actually deposited along the ordinate axis?
3. Correct typos in formulas
on
and
on
Ответ на вопрос №1 можно не вставлять в статью. Статья после незначительных исправлений может быть опу бликована
Comments for author File: Comments.docx
Author Response
Dear Editor and Reviewer:
Thank you very much for your hard work. Please see the attachment about the response to the reviewer’s comments.
Kind regards,
Yansen Wang
Author Response File: Author Response.docx
