Senthil Kumar Parimalanathan

9 Questions 16 Answers 0 Followers

Questions related from Senthil Kumar Parimalanathan

What role does a vortex filament play in a turbulent flow ??

What is the connection between a vortex filament and small scale turbulent structures ??

06 June 2016 8,729 0 View

Is anyone familiar with the estimation of dissipiation rate from temporal derivative of velocity fluctuations obtained through Hotwire measurements?

I am estimating the dissipation rate from (du'/dt), estimated at each time using the central differencing scheme. Some authors especially Prof. Mi (ref: Meas.Sci.Technol. 22 (2011)) have used...

09 September 2014 9,885 4 View

How do vorticity and no slip boundary condition co-exist?

I was quite perplexed when I read that the vorticity in the walls is the reason for maintaining the no slip boundary condition. Can some one explain this?

08 August 2014 3,398 9 View

How can I apply high frequency noise correction to hot-wire data to obtain dissipiation rates?

I have the instantaneous velocity data in the near field of a round turbulent jet. Can someone help me with the procedure of removing the high frequency noise to estimate the dissipation rate and...

07 July 2014 3,924 3 View

Can someone help me assess the validity of Taylor's hypothesis in my experiments?

My jet turbulence intensities (at 8D, D being inlet nozzle diameter) are as high as 30% and 50%. Is the Taylor's hypothesis valid in this case? Can I use the hypothesis for converting the time...

06 June 2014 3,601 3 View

Can I identify a coherent structure in a turbulent flow field using proper orthogonal decomposition?

Can I identify a coherent structure in a turbulent flow field using proper orthogonal decomposition? If yes, what is the theoretical basis for doing so?

05 May 2014 1,141 5 View

Is there any way to identify the coherent structures from the radial and axial velocity variation data?

Coherent structures identification. I am using cross -Hot wire anemometer for characterizing the flow field of a free round jet. Is there any way to identify the coherent structures from the...

05 May 2014 3,324 3 View

Working with Taylor's micro scale?

I have the temporal correlation (from hot wire anemometer measurements) data obtained by direct method as well as from spectrum. When I calculate Taylor's scale by fitting a osculating parabola, I...

04 April 2014 2,304 3 View

Does turbulence generated by a grid in an open, round jet obey the decay law?

I am trying to measure the axial turbulent intensity decay with a hot wire anemometer in an open jet issued from a profiled nozzle having a grid in-flush with its opening. I want to know whether...

03 March 2014 610 3 View