# Turbulent fluctuating components

 Register Blogs Members List Search Today's Posts Mark Forums Read

 June 24, 2000, 21:58 Turbulent fluctuating components #1 Muhammad Akbar Guest   Posts: n/a In some papers I found that they randomly sample fluctuating components of velocities from the Gaussian distribution based on the r.m.s value of turbulent intensities. But how exactly they do it?

 July 7, 2000, 06:26 Re: Turbulent fluctuating components #2 senthil Guest   Posts: n/a i could not understand what u've tried to convey.can u be more clear and specific. senthil k

 July 7, 2000, 08:42 Re: Turbulent fluctuating components #3 Muhammad Akbar Guest   Posts: n/a Okay, from numerical simulation we get only mean components of velocities. If we want to approximate the fluctuating velocities, we need to do it based on the auto correlation (i.e., turbulence intensities) of the turbulent flow. As a matter of fact these square root of turbulence intensities are the RMS values of the fluctuating components. So some authors sample these fluctuating velocities from a Gaussian distribution with mean = zero and standard deviation = square root of turbulence intensities. I came to knew about the sampling method later after posting the message. I was wondering why so far nobody answered to this message. However if I'm wrong or you have anything more to say please do continue.

 Thread Tools Display Modes Linear Mode

 Posting Rules You may not post new threads You may not post replies You may not post attachments You may not edit your posts BB code is On Smilies are On [IMG] code is On HTML code is OffTrackbacks are On Pingbacks are On Refbacks are On Forum Rules

 Similar Threads Thread Thread Starter Forum Replies Last Post Hoshang Garda FLUENT 1 November 27, 2013 11:24 braennstroem OpenFOAM Running, Solving & CFD 13 October 15, 2010 08:59 nuimlabib Main CFD Forum 0 August 4, 2009 00:05 Seyfettin FLUENT 0 November 25, 2005 03:50 R.THUNDIL KARUPPA RAJ FLUENT 1 June 29, 2005 17:30

All times are GMT -4. The time now is 17:54.