Launch Dynamic Simulation of a Compressed-Air Launcher for Fire Suppression

Round 1

Reviewer 1 Report

The manuscript needs to be revised considering the following suggestions.

1. Why is the gas considered to be an ideal gas in the analysis?

2. Why shall be a probable error if the heat transfer is not ignored? How reliable is it to consider a process to be reversible adiabatic?

3. How much is the irreversibility in the system? Also, authors are advised to comment on the exergetic analysis in the revised manuscript.

 

4. what is the reason for having a linear increment of gas mass in a barrel with pressure?

minor grammar check is required.

Author Response

Please see the attachment.

Author Response File: Author Response.docx

Reviewer 2 Report

This work investigated a compressed air launcher by numerical techniques. It is interesting for readers. However, some problems should also be considered.

(a) the author didn't show what kind of numerical method they used in this paper. I think it's an important part for a numerical modeling article. For a numerical investigation of a problem, the first thing should be the performance of your numerical method. but the authors didn't show anything of their numerical method.  

(b) How can the readers know your results are accurate enought? if there is a benchmark problem to show your numerical method is Okay for simulation of air launcher? 

(c) Moreover, if the author can add a contour figure to show the pressure, the velocity in one case? 

Base on the aforementioned problems in this paper, I don't recommend its publication on Journal Applied Sciences. 

 

the English of this work is Okay. 

      

Author Response

Please see the attachment.

Author Response File: Author Response.docx

Reviewer 3 Report

This manuscript focuses on improving fire suppression performance through the use of compressed air launching technology. Authors provided a launch dynamics calculation model of a compressed air launcher, developed using VC++ programming, to simulate the acceleration process of a fire extinguishing bomb in the barrel. They showed we demonstrate the effectiveness of our calculation model and program in accurately simulating the launching process. Moreover, Additionally, we find that specific structural parameters, such as nozzle diameter and gas cylinder volume, have a direct impact on interior ballistics variations. Finally, authors claimed that the research findings provide valuable theoretical guidance for determining the working parameters of compressed air accelerated fire extinguishing bombs.

The subject is very interesting, however, it would be acceptable after addressing to the major revision.

1-      Please explain and highlight the novelties of this research work with respect to the previously published papers?

2-      English Language needs a revision thoroughly in the manuscript. Please avoid using the words similar to “We’, “Our”, etc.

3-      This research is completely calculation work. Authors need to experimental data at least from literature to compare and valid their results.

4-      Statistical analysis should be carried out on the obtained results.

5-      Authors must discuses on the rheology material (s) used in research. The young’s modulus, Newtonian or non-Newtonian fluid, etc. For this purpose, Authors can strongly consider the following unique references [doi.org/10.1007/s10965-012-9897-2, and this book by citing them (Non-linear Rheology of Polymer Melts: Constitutive Equations, Rheological Properties of Polymer Blends, Shear Flow, Sliding Plate Rheometers, LAP LAMBERT Academic, 2011.)].

6-      The coordination between abstract and conclusion should be provided.  

 

Comments for author File: Comments.pdf

Minor revision is needed.

Author Response

Please see the attachment.

Author Response File: Author Response.docx

Round 2

Reviewer 2 Report

The authors have addressed my questions. I would recommend the publication of this paper in its current form.

Reviewer 3 Report

Authors have tried to address the raised comments. I recommend the manuscript for publication at the present form.