Nonlinear Destructive Interaction between Wind and Wave Loads Acting on the Substructure of the Offshore Wind Energy Converter: A Numerical Study
Round 1
Reviewer 1 Report
Just a few observations:
Line 173 – aerodynamic damping relation with Uair not with Uair2
Measurement units in figures: Hz not HZ, N not Newton
Figure 19, c – m2/s not m2/as
Figure 21 is missing
Author Response
Thank you for your comments and suggestions.
The manuscript is revised as requested by reviewer.
The Change highlighted using the blue color can be summarized such as the following:
- Line 173 – aerodynamic damping relation with Uair not with Uair2
As requested by reviewer, the manuscript is revised such as the following:
Therefore, the aerodynamic damping is additionally introduced.
2.Measurement units in figures: Hz not HZ, N not Newton
As requested by reviewer, the Figure 19 is modified such as the following:
Figure 20. Trajectories of the drag force and inertia force that comprise the wave force
3.Figure 19, c – m2/s not m2/as
As requested by reviewer, the Figure 19 is modified such as the following:
- Figure 21 is missing
As requested by reviewer, the Figure 21 is added:
Figure 21. Trajectories of the wave force and wind force.
Reviewer 2 Report
Dear Authors, please find here some minor comments.
Align the equation numbers to the right
L33: Power generation via offshore wind energy is expected to grow to 75 GW by 2020--> add a reference
L42: high-quality wind -> explain better
L67: large eddies that swirl clockwise: should the rotation direction depend upon the latitude?
L197: sigmaU not defined
L412: do not use italic for the unit of measures if not done elsewhere in the manuscript
Author Response
Thank you for your comments and suggestions.
The manuscript is revised as requested by reviewer.
The Change highlighted using the blue color can be summarized such as the following:
- Align the equation numbers to the right
To my understanding, after accepted, the manuscript will be edited by the editorial staff.
- L33: Power generation via offshore wind energy is expected to grow to 75 GW by 2020--> add a reference
As requested by reviewer, the manuscript is revised such as the following:
1.Introduction
Power generation via offshore wind energy is expected to grow to 75 GW by 2020 [1,2]. Thus, the growth potential for the offshore wind industry is immense. However, the offshore wind industry is still suffering from problems, such as the large initial capital requirements. Most initial capital expenditures occur during the process of assembly and mounting, and the remaining costs are incurred by the actual sub-structure and maintenance
- L42: high-quality wind -> explain better
As requested by reviewer, the manuscript is revised such as the following:
in deep waters where the wind velocity fast enough for power generation is sustained longer,
- L67: large eddies that swirl clockwise: should the rotation direction depend upon the latitude?
To the best of my knowledge, large eddies that swirl clockwise does not depend on the latitude.
- L197: sigmaU not defined
As requested by reviewer, the manuscript is revised such as the following:
and the turbulence intensity is defined as the standard deviation of the wind velocity around its mean value
- L412: do not use italic for the unit of measures if not done elsewhere in the manuscript
As requested by reviewer, the unit of measures in the whole manuscript is revised in italic.
