Numerical Investigation of Flow Force and Cavitation Phenomenon in the Pilot Stage of Electrical-Hydraulic Servo Valve under Temperature Shock
Round 1
Reviewer 1 Report
Dear Sir or Madam,
I'm very pleased to get an insight into your work. The topic is higly interesting and your approach is well documented.
There is one major comment with regard to the structure of the experiment. It seems to be the test housing is open to the outside and the figures of the cavitation viewing (24 and 25) show the test housing not completely filled with the fluid. But for a succesful cavitation investigation the test valve must be completely enclosed with the fluid. Only then is the phenomene detectable. Please check the observation. If something was missunderstood during setup, please ignore the comment.
Furthermore, there are some minor remarks:
- Some descriptions from line 141 to 146 are ambiguous. It does not come out clearly where the nozzle outlet is located. Is it the end of the blue colored body or at the position between the measures 'Main section ' and 'H'?
- Some equations are written in different styles. Such as in Eqs. 5,there are different writing styles.
In line 170 the reference to the equation is on the wrong one. It has to be the Eqs. 6.
In line 189 the line break ist in the middle of the equation. - The plot in Figure 13 (a) has a wrong axis labeling.
Hoping that the suggestions will be helpful to you.
Author Response
Please see the attachment
Author Response File: 
Author Response.pdf
Reviewer 2 Report
This paper deals with the flow force and cavitation in the pilot stage of servo valve used in the solid fuel rockets. The topics is interesting for researchers. But the explanation on the theoretical model is insufficient and incomprehensible. My questions are shown in attached file.
Comments for author File: 
Comments.doc
Author Response
Please see the attachment
Author Response File: Author Response.pdf
Reviewer 3 Report
The paper is well done and about an interesting topic.
Please check the file uploaded for comments.
Comments for author File: Comments.pdf
Author Response
Please see the attachment.
Author Response File: Author Response.pdf
Round 2
Reviewer 1 Report
Dear Sir or Madam,
thank you very much for taking the advice into account. The description for cavitation examination was understandable.
Also the understanding of the structure of the analytical approach is now better. The approach is highly interesting.
Author Response
The comments are all valuable and helpful, as well as guiding significance to our research. Thank you for your suggestion and contribution to this paper. Please do forward our heartfelt thanks to you.
Reviewer 2 Report
Sorry for my mistake in my 1st review report. Correct question 1. 3) is "From where the equations do the equations (1) - (5) come ?" Not d0.
But from your response I could understand the meaning of numerical values in Eq. (1) - (5).
Again I will send my comments in attached file.
Comments for author File: Comments.pdf
Author Response
Please see the attachment
Author Response File: Author Response.pdf
Round 3
Reviewer 2 Report
Problems shown in my second review report were made clear.
