Hi Sunil, Here is the attached file that you wanted... Regards, Dominic Hello Bill, Dominic, Can any of you please forward me the aerofoil.C that Bill sent as attachment to post with the above subject line? I could not find it there. I just want to use it as a starting point to write my code to create overlap by means of hyperbolic meshing for our Structured Multi Block mesh. If any body thinks that there is a more appropriate (or relevant ) piece of code .. It would be nice if you can forward it to me. thanks and Regards, Sunil. -----Original Message----- From: overture-bounce@xxxxxxxxxxxxx [mailto:overture-bounce@xxxxxxxxxxxxx] On Behalf Of Bill Henshaw Sent: Wednesday, January 30, 2008 12:22 PM To: freelists Subject: [overture] Re: Hyberbolic grid generation without Ogen Hi Dominic, The attached file contains the main program airfoil.C that shows how to generate the naca airfoil grid with the hyperbolic grid generator. I have also attached some new versions of Overture files that you should use, replacing the ones you have. regards, Bill. #DOMINIC DENVER JOHN CHANDAR# wrote: > Hi, > > I'm trying to write up a small code to generate a a grid around an > airfoil without ogen using the HyperbolicMapping class. I followed the > naca.hype.cmd ogen command file and i still think that i have missed > some information in the code since i always end up in getting a > negative volume error (Some problem in the T.E). But the naca.hype.cmd > works very well using ogen...(I've used similar parameters for both > the cmd file and the source code). The code is as follows. Any ways to > rectify this error ?... Many thanks....Dominic >