[gmx-users] dipole moment of water using TIP3P model

2019-05-09 Thread Sabreen Farnaz
Dear Users, It is known that electric dipole moment of a water monomer is experimentally 1.85 D and using the TIP3P model it's supposed to be 2.35D. I am using the TIP3P model for a water-based simulation in Gromacs 5.1.5. After applying sinusoidal electric fields in the Y axis, the norm of the dip

[gmx-users] Viscosity Calculation in Gromacs V5.1.5

2018-07-16 Thread Sabreen Farnaz
Dear all, I am applying an electric field to water and I need to calculate its viscosity at different simulation temperature. I have come across gmx energy -vis option that outputs shear and bulk viscosity. And another way is to use gmx tcaf -ov and then apply correction. Since I do not have an ac

Re: [gmx-users] Queries regarding temperature gradient

2018-07-08 Thread Sabreen Farnaz
That makes sense. Thanks a lot, lot for your help. On Mon, 9 Jul 2018, 00:40 Justin Lemkul, wrote: > > > On 7/8/18 2:37 PM, Sabreen Farnaz wrote: > > I had read this part from gmx help traj "plots temperature of each group, > > provides velocities are present...n

Re: [gmx-users] Queries regarding temperature gradient

2018-07-08 Thread Sabreen Farnaz
ote: > Hi, > > gmx help traj has a useful point to make about how it estimates temperature > from the velocities. > > Mark > > On Sun, Jul 8, 2018 at 8:22 PM Sabreen Farnaz > wrote: > > > Thank you, Dr. Lemkul. I have done this but used gmx energy to find the >

Re: [gmx-users] Queries regarding temperature gradient

2018-07-08 Thread Sabreen Farnaz
found different values for the same energy group using them. On Mon, 9 Jul 2018, 00:10 Justin Lemkul, wrote: > > > On 7/6/18 4:30 PM, Sabreen Farnaz wrote: > > Dear Dr. Lemkul, > > Thank you for your answer. Can you please also advise how can I get the > > temperature o

Re: [gmx-users] Queries regarding temperature gradient

2018-07-06 Thread Sabreen Farnaz
information. Regards, Neelima S. On Sat, 7 Jul 2018, 00:01 Justin Lemkul, wrote: > > > On 7/6/18 1:07 PM, Sabreen Farnaz wrote: > > Dear all, > > This is in regard to my previous queries. The warning in NVT step can > > possibly be ignored using -maxwarn but I am still not sur

Re: [gmx-users] Queries regarding temperature gradient

2018-07-06 Thread Sabreen Farnaz
Dear all, This is in regard to my previous queries. The warning in NVT step can possibly be ignored using -maxwarn but I am still not sure about the rest! Can someone please help? Thanks, Neelima S. On Fri, 6 Jul 2018, 01:56 Sabreen Farnaz, wrote: > Dear all, > > I am setting up a sys

[gmx-users] Thermal gradient in a system

2018-07-06 Thread Sabreen Farnaz
Dear all, How can I get the temperature of a system as a function of distance using gromacs 5.1.5? gmx energy plots the temperature of the centre of mass of energy groups against time. gmx traj also does the same from velocity information. Please help! Regards, Neelima S. -- Gromacs Users mailin

[gmx-users] Queries regarding temperature gradient

2018-07-05 Thread Sabreen Farnaz
Dear all, I am setting up a system where I want the solute to be immersed in a solvent with a temperature gradient. I have defined two different temperature groups, two portions of the solvent, and want them to be at say T1 and T2 kelvins. The rest of the system will not be subjected to a thermost

[gmx-users] Using GPU to run gromacs 5.1.5

2018-05-17 Thread Sabreen Farnaz
Dear all, Currently I am using GPU acceleration to run Gromacs V5.1.5. Energy groups are still not created for V5.1.5, similar to previous versions, with the message "NOTE: With GPUs, reporting energy group contributions is not supported". My question is if this is supported in more recent version