Bob Johansson's Page

"Here is more freeware for the analysis of airfoils.   http://www.xflr5.com/xflr5.htm"

"There is alot of freeware for propller and wing design available. I will upload some software which might help you determine Cd and Cl for each wing  section and hence the applicable forces.   Rhino has a "Split line" command. It…"

"This is the drag on an immersed body. F = (CD) * (1/2 * rho * V^2*A). "

"Hi Bob,   Thank you!! I am very glad to hear this.   Best wishes, Sevil"

"HI:   We are looking at Wind Loading as published by the American Society of Civil Engineers (ASCE).   Im actually working on some simple building models now. Id like to analyse an oil drilling structure in SnS and upload the results. I…"

"HI: Well Im pretty much a workaholic so I dont mind help people out on here. Once in awhile I get a good question. I will crunch some numbers and run a simple example in SnS for posting.  Im learning SnS slowly. Its really…"

"I can put together a wind calcualtion as it is done in North America and post it for you. I won't get it done till the weekend. For a retangular building its fairly straight forward. I have no idea what wind codes would be the law in Turkey. I…"

"example"

"No Problem.   Computational fluid dynamics could be used to determine the flow patterns around a group of building like in a down town core. These places produce weird gust patterns.   The strength of the building in regards to a wind load…"

"HI:   Wind velocity is usually converted into a velocity pressure  or wind force according to a specific standard or code which would be a required load condition according to the building code in effect in the jurisdiction in which a…"