CFD Analysis of Building Cross-Ventilation with Different Angled Gable Roofs and Opening Locations

Round 1

Reviewer 1 Report

Comments and Suggestions for Authors

This paper is using CFD to investigate building cross-ventilation with different angled gable roofs and opening locations. This paper is more like a technical paper which consists of a couple case studies. I also have a couple of questions as shown below.

1. Can authors explain more about the UDS that has been used in the paper? What is the scalar solving for?

2. what is the y+ value respectively at the boundary wall for all three cases in the grid sensitivity study?

3.  In equations, notations are Italic, but those are not Italic in context. These need to be consistent.

 

 

Author Response

Please refer to the attachment

Author Response File: Author Response.docx

Reviewer 2 Report

Comments and Suggestions for Authors

1）  At figure 1, which line is the result of the simulation? Which one is the result of the experiment?

2）  What does Figure 2 mean? Did the author measure over 100 pressure points? However, authors mentioned in the following text that only a few points were measured.

3）  Equations 1-5, it is best for the author to directly write the results using constant values in the article, which is much clearer and more concise for reader.

4）  Figure 5 shows that the error for code validation results is very large. Is the simulation credible?

5）  Figure 6 has not a coordinate system, so it cannot be understood. And the author mentioned that there are only three opening position modes, while Figure 6 has four. Such as, which one corresponds to top-top mode?

6）  The conclusion is very trivial. Important conclusions and mechanisms should be summarized at conclusion part.

Comments on the Quality of English Language

Writing should be polished, such as all Air exchange efficiency was abbreviated as AEE, but below fig,9, then Air exchange efficiency was as (εA).  

Author Response

Please refer to the attachment

Author Response File: Author Response.docx

Reviewer 3 Report

Comments and Suggestions for Authors

The authors presented a numerical study on building cross-ventilation with different angled gable roofs and opening locations.

The paper is generally well prepared, has good scientific soundness and can be accepted for publication after addressing the following points:

The novelty of the paper is to be clearly stated.

The dimensions of the computational domain are to be justified.

The solved governing equations are to be presented.

The boundary conditions are to be expressed mathematically.

The used turbulence model is to be justified.

A figure presenting the 3D mesh is to be added.

What is the convergence criterion?

What is the time step?

The 3D flow structure (streamlines) is to be presented.

The following papers may be added to the literature review:

10.3390/math10071118

10.3390/math10020178

The paper is to be checked for misprints.

Author Response

Please refer to the attachment

Author Response File: Author Response.docx

Round 2

Reviewer 1 Report

Comments and Suggestions for Authors

The authors have addressed all my questions and concerns. The revision looks good to me and the manuscript is recommended for publication.