Introducing reactor
14-in reactor cloth modify panel give any value in "Mass kg" you want but here i give it 80 kg i know this one is very heavy for the cloth you can use your own value, and make sure Avoid Self-Intersection is checked, as image below.
15-select the curtain and click on a little + sign to reveal its vertex mode and then select vertex as image below.
16-if you see now you curtain is totally shown it vertexes, now select 2 lines of vertex near to curtain hang to fix the curtain over this place, as image illustrated below.
17-with the top 2 vertex lines selected scroll down to see "Fix Vertices" button still with the top 2 vertex lines selected hit "Fix Vertices" now you will see the red colored vertex changed its color to orangey color its mean that these vertex are fixed in the place. as image below.
18-now we are pretty done with our curtain go to normal mode out from vertex by selecting on reactor cloth.
19-selecte curtain again from reactor panel hit this icon 
it is cloth collection with out this our cloth simulation will not work. make sure just curtain is add in cloth collection, and also you can add the curtain like rigid body collection in the cloth collection.
20-this is the time to add "Wind" into scene to blow the curtain click on this icon 
in reactor panel and then in left view port put it somewhere in the middle of curtain to blow curtain perfectly. in the picture below.
21-now go to "wind" modify panel in the wind speed give value of 90 or what ever you like to wind have speed, in picture below.
22-also check these option in "wind" modify panel scroll little bit down to see these check boxes, in image below.
23-from reactor panel hit this button 
to see how animation is look like when you see animation is perfect then you can use this icon 
to create animation in your scene.
24-now one problem to mention when you hit the "preview Animation" or "Create Animation" it will give a error, as like image below.
25-so what is this error it because of our curtain is in convex hull mode, now we should change it from convex hull in to concave mesh to do this chose this icon 
from reactor panel and open it, now change it s like image below.
26-we are done now and I hope you learn something about reactor cloth and reactor wind.
The "Preview Animation" final result
And this one is after creating animation and add side wall floor and material to objects
if you have any comments feedbacks questions mail meI will be happy to answer you.
