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

08 September 2014 9,825 4 View

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

07 August 2014 3,326 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...

06 July 2014 3,860 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...

05 June 2014 3,527 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?

04 May 2014 1,074 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...

04 May 2014 3,265 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...

03 April 2014 2,234 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...

02 March 2014 546 3 View

error in running a model in Abaqus

Excessive rotation of nodes in node set ErrNodeExcessRotation-Step1

17 August 2021 0 0 View

error in modelling model in Abaqus

Excessive rotation of nodes in node set ErrNodeExcessRotation-Step1

17 August 2021 0 0 View

MD MOE RMSD

How to calculate the RMSD values for a MD simulation using MOE?

07 August 2021 0 0 View

MD MOE RMSD

How to calculate the RMSD values for a MD simulation using MOE?

07 August 2021 0 0 View

MGL tools

20 June 2021 0 0 View

fatal error

When I tried to energy minimization my system, I got fatal error as below. Fatal error: Atomtype opls_116 not found Although I've already added this line: ; include water #include "oplsaa.ff/spc.itp" to [molecultype] directive in my topology.

16 June 2021 0 0 View

fatal error

When I tried to energy minimization my system, I got fatal error as below. Fatal error: Atomtype opls_116 not found Although I've already added this line: ; include water #include "oplsaa.ff/spc.itp" to [molecultype] directive in my topology.

16 June 2021 0 0 View

fatal error

When I tried to energy minimization my system, I got fatal error as below. Fatal error: Atomtype opls_116 not found Although I've already added this line: ; include water #include "oplsaa.ff/spc.itp" to [molecultype] directive in my topology.

16 June 2021 0 0 View

fatal error

When I tried to energy minimization my system, I got fatal error as below. Fatal error: Atomtype opls_116 not found Although I've already added this line: ; include water #include "oplsaa.ff/spc.itp" to [molecultype] directive in my topology.

16 June 2021 0 0 View

i have some problem with chtMultiRegionSimpleFoam

--> FOAM FATAL ERROR: Maximum number of iterations exceeded From function Foam::scalar Foam::species::thermo::T(Foam::scalar, Foam::scalar, Foam::scalar, Foam::scalar (Foam::species::thermo::*)(Foam::scalar, Foam::scalar) const, Foam::scalar (Foam::species::thermo::*)(Foam::scalar, Foam::scalar) const, Foam::scalar (Foam::species::thermo::*)(Foam::scalar) const) const [with Thermo = Foam::hConstThermo >; Type = Foam::sensibleEnthalpy; Foam::scalar = double; Foam::species::thermo = Foam::species::thermo >, Foam::sensibleEnthalpy>] in file /home/ubuntu/OpenFOAM/OpenFOAM-4.1/src/thermophysicalModels/specie/lnInclude/thermoI.H at line 66. FOAM aborting #0 Foam::error::printStack(Foam::Ostream&) at ??:? #1 Foam::error::abort() at ??:? #2 Foam::heRhoThermo >, Foam::sensibleEnthalpy> > > >::calculate() at ??:? #3 Foam::heRhoThermo >, Foam::sensibleEnthalpy> > > >::correct() at ??:? #4 ? at ??:? #5 __libc_start_main in "/lib/x86_64-linux-gnu/libc.so.6" #6 ? at ??:?

24 March 2021 0 0 View