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Why double precision for Y+<1?

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January 2, 2013, 06:46	Why double precision for Y+<1?	#1
Omer New Member Omer Join Date: Aug 2012 Posts: 4 Rep Power: 13	Hi , I am aerodynamic designer and I used CFD for some of my analysis. The Best practise guide http://www.cfd-online.com/Wiki/Best_...omachinery_CFD suggests I use double precision for Y+<1. I would like to know why we need to do this. I know the aspect ratios when Y+<1 condition is met, can be very high. But I don't understand why we need to use double-precision. What are the underlying mathematics that needs double-precision. Regards Omer

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