An MHD Flow of Non-Newtonian Fluid Due to a Porous Stretching/Shrinking Sheet with Mass Transfer
, David Laroze 2, Nejla Mahjoub Said 3,4 and Mohsen Sharifpur 5,6,*
Round 1
Reviewer 1 Report
Dear Authors congratulations on an interesting article: “An MHD flow of non-newtonian fluid due to a porous stretching/shrinking sheet with mass transfer”
From the substantive point of view, I have practically no comments. However, I have several suggestions for editing changes in the work that, in my opinion, should be improved:
- On the drawings included in the work, a legend describing each line should be included to make the presentation of the results more legible,
- Customize text editing in point 2 PHYSICAL MODEL
Author Response
RESPONSE TO REVIEWER’S COMMENTS
Title : An MHD flow of non-newtonian fluid due to a porous stretching/shrinking sheet with mass transfer
Authors : U.S. Mahabaleshwar, T. Anusha, David Laroze, Nejla Mahjoub Said, Mohsen Sharifpur
Journal Name : Sustainability
Manuscript Number :   Sustainability-1656808
We warmly thank the very competent reviewers for their time spent on reading the manuscript and their valuable comments and suggestions. We have modified the manuscript accordingly, and the detailed corrections are listed below point by point.
Reply to Reviewer 1:
1- Reviewer 1
Dear Authors congratulations on an interesting article: “An MHD flow of non-newtonian fluid due to a porous stretching/shrinking sheet with mass transfer”
From the substantive point of view, I have practically no comments. However, I have several suggestions for editing changes in the work that, in my opinion, should be improved:
- On the drawings included in the work, a legend describing each line should be included to make the presentation of the results more legible,
- Customize text editing in point 2 PHYSICAL MODEL
Author’s Response:
Necessary corrections have been made. And text edited in physical model section.
Reviewer 2 Report
The authors present a similarity solution for incompressible viscoelastic fluid flow over the porous stretching/shrinking sheet with hybrid nanoparticles Cu Al2O3 in base fluid H2O. In its present form, the paper lacks some rigor, needs detailed explanation/clarifications, and the English must be carefully revised. if modified, it may improve its quality and clarity.
Issues/Questions/Clarifications suggested:
- The authors state “3D incompressible viscoelastic fluid flow”; however, no momentum equation is provided for the velocity component w. It seems form fig. 1 that a 2D flow is indeed analyzed.
- In the abstract the authors state “The work found many applications in machining and manufacturing, solar energy, MHD flow meters and pumps, power generators, geothermal recovery, flow via filtering devices, chemical catalytic reactors etc.”. It would be interesting for the readers to include, in the numerical results section, an example considering one of these applications.
- No explanation or citation is given for Eq. 12 and also for the solution phi(eps) before Eq. (19). The assumptions and limitations should be clearly discussed during the solution development.
Author Response
Reply to Reviewer 2:
2- Reviewer 2
The authors present a similarity solution for incompressible viscoelastic fluid flow over the porous stretching/shrinking sheet with hybrid nanoparticles Cu-Al2O3 in base fluid H2O. In its present form, the paper lacks some rigor, needs detailed explanation/clarifications, and the English must be carefully revised. if modified, it may improve its quality and clarity.
Author’s Response:
English writing quality is improved in the revised manuscript.
Issues/Questions/Clarifications suggested:
- The authors state “3D incompressible viscoelastic fluid flow”; however, no momentum equation is provided for the velocity component w. It seems form fig. 1 that a 2D flow is indeed analyzed.
Author’s Response:
The current problem is on 3D flow. The momentum equation for the velocity component w is not added because of boundary layer limitations.
- The velocity in the axial direction is much larger than the one in the transverse direction, i.e,, .
- Velocity gradient in the transverse direction are much bigger than those in the axial direction.
And the reference can be seen in Turkyilmazoglu [22]. Fig.1 represents 3D flow.
- In the abstract the authors state “The work found many applications in machining and manufacturing, solar energy, MHD flow meters and pumps, power generators, geothermal recovery, flow via filtering devices, chemical catalytic reactors etc.”. It would be interesting for the readers to include, in the numerical results section, an example considering one of these applications.
Author’s Response:
This is the analytical work, numerical results are not there.
- No explanation or citation is given for Eq. 12 and also for the solution phi(eps) before Eq. (19). The assumptions and limitations should be clearly discussed during the solution development.
Author’s Response:
The necessary corrections have been made in the revised manuscript as follows,
The solutions of Eq.(7) and (8) are assumed in the following form based on the analytical solutions taken as in Turkyilmazoglu [22] and Crane [19] with B.Cs as in Eq.(10).
The explanation of the solution phi(eps) before Eq. (19) is updated as follows,
is the regular singular point of . By assuming the solution of Eqn. (17) as power series solutionby adopting the Frobenius method (see Hamid et al [23]) and obtain the final solution in terms of as,
Also, moderate English changes required
Author’s Response:
The whole manuscript is revised by editing errors in English language.
Author Response File: 
Author Response.pdf
Reviewer 3 Report
Please see attached...
Comments for author File: Comments.pdf
Author Response
Reply to Reviewer 3:
3- Reviewer 3
In this manuscript, authors reported the MHD flow of non-newtonian fluid due to a porous stretching sheet with mass transfer. The aim of the work meets requirement of Sustainability, but there will be some insufficient and questionable points in the manuscript. The manuscript needs some improvement in the language and also in the grammatical construction of the sentences as the language does not meet the standards of the Journal. The present format of the manuscript is not accepted in Sustainability and hence major revision is required. The manuscript can be revised based on the following review comments.
- This manuscript needs some serious improvement in the language and also in the grammatical construction of the sentences. Authors must check the language quality and grammatical errors in throughout the manuscript.
Author’s Response:
The whole revised manuscript is corrected for language correction and grammar correction and now the sentences are improved by removing errors.
- Abstract can be revised with more clarity for the readers. Abbreviations can be avoided in the topic and abstract.
Author’s Response:
The abstract is revised and abbreviations are now explained in the revised manuscript.
- Introduction is very simple and doesn’t have a significant depth of the present research. It should be revised.
Author’s Response:
Introduction is revised by adding the new literatures related to the present research.
- Methodology section can be included with more clarity
Author’s Response:
In the revised manuscript methodology section is updated.
- Authors must include the reason for the selection of present combination of hybrid nanoparticles.
Author’s Response:
The necessary corrections have been made as follows.
The nanoparticle copper was noted to have higher rate of heat transfer and surface shear stress. To enhance the good positive compatible features of each other, the appropriate composition of nanomaterials has to be chosen. On previous research findings, alumina has been favorable nanoparticle due to great deal in chemical motionlessness and stability.
- The mechanisms behind the variations of results must be presented in the results and discussions.
Author’s Response:
The necessary corrections have been made.
- Figures quality can be improved further
Author’s Response:
The quality of the figures is enhanced in the revised manuscript.
- Authors have not explained anything about non-newtonian flow in the article. It must be addressed.
Author’s Response:
The non-Newtonian flow is addressed in the introduction section.
- Authors can avoid the abbreviations and symbols in abstract, results & discussion and in the conclusions.
Author’s Response:
The abstract is revised and abbreviations are now explained in abstract and conclusion section of the revised manuscript.
- Authors must be included the practical applications with respect to current research work.
Author’s Response:
The practical applications are added as follows,
The work found many applications in machining and manufacturing, solar energy, MHD flow meters and pumps, power generators, geothermal recovery, flow via filtering devices, chemical catalytic reactors etc.
The mass transfer and momentum boundary layer flow have practical interest in the field of polymer process and electrochemistry, further the non-Newtonian fluids flow is significant field in industry and so become an interest field for researchers.
- Self-citations can be reduced
Author’s Response:
The self-citations are reduced in the revised manuscript.
Round 2
Reviewer 2 Report
The authors have responded all the issues raised.
Author Response
Thank you so much for your valuable comments.
Reviewer 3 Report
1. In line no 129, (see Turkyilmazoglu [22]), should be changed as (Turkyilmazoglu [22]), do not include the word 'see'. these type of mistakes can be modified throughout the manuscript.
2. Quantitative results can be added in the abstract and conclusion sections.
3. Still authors can reduce the self citations (<5). and add relevant other research reference instead of that.
Author Response
We warmly thank the very competent reviewers for their time spent on reading the manuscript and their valuable comments and suggestions. We have modified the manuscript accordingly, and the detailed corrections are listed below point by point.
Reply to Reviewer :
- In line no 129, (see Turkyilmazoglu [22]), should be changed as (Turkyilmazoglu [22]), do not include the word 'see'. these type of mistakes can be modified throughout the manuscript.
Author’s Response:
The corrections have been made in the revised manuscript.
- Quantitative results can be added in the abstract and conclusion sections.
Author’s Response:
The necessary correction has been made in the revised manuscript.
- Still authors can reduce the self citations (<5). and add relevant other research reference instead of that.
Author’s Response:
Reduce the self citation to 4 and added other relevant references in the revised manuscript and marked in yellow color.
