OpenMOC Users Group

Contact owners and managers

1–30 of 59

This group is for the discussion of the compilation, installation, and usage of the OpenMOC Method of Characteristics (MOC) neutral particle transport code. This group is not intended to replace the issues feature of the GitHub repository; bugs and feature requests should be directed there.

Some resources which you may find helpful:

0 selected

Apr 24

Anisotropic scattering

Good afternoon, dear developers. Are there any plans to add scattering anisotropy accounting? Maybe

unread,

Anisotropic scattering

Good afternoon, dear developers. Are there any plans to add scattering anisotropy accounting? Maybe

Apr 24

AB C, … John Mayers4

Mar 25

Transient simulation

Is it possible to communicate with Dr. Shaner? I checked his branch and had a lot of questions. Or

unread,

Transient simulation

Is it possible to communicate with Dr. Shaner? I checked his branch and had a lot of questions. Or

Mar 25

钟昌明, Guillaume Giudicelli2

Mar 20

how to obtain the grid number associated with the OpenMOC FSR region (3D/2D)

Hello We do not actively develop 3D plotting in OpenMOC. Feel free to do so. The topology of the FSR

unread,

how to obtain the grid number associated with the OpenMOC FSR region (3D/2D)

Hello We do not actively develop 3D plotting in OpenMOC. Feel free to do so. The topology of the FSR

Mar 20

John Mayers, Guillaume Giudicelli6

Mar 19

Get flux value at a given coordinate

Little correction: fsr_id = geometry.findFSRId(coords=loc_coord) - 1 => fsr_id = geometry.

unread,

Get flux value at a given coordinate

Little correction: fsr_id = geometry.findFSRId(coords=loc_coord) - 1 => fsr_id = geometry.

Mar 19

钟昌明, Guillaume Giudicelli2

Mar 19

how to obtain the grid number associated with the OpenMOC FSR region.

Hello There has been a recent post last week about using the geometry.getFSRId routine to go from a

unread,

how to obtain the grid number associated with the OpenMOC FSR region.

Hello There has been a recent post last week about using the geometry.getFSRId routine to go from a

Mar 19

John Mayers, … Guillaume Giudicelli4

Jan 31

Hello Sorry, Gmail sent all these messages to spam. OpenMOC does not support hexagonal geometries so

unread,

Hello Sorry, Gmail sent all these messages to spam. OpenMOC does not support hexagonal geometries so

Jan 31

wind zhou, Guillaume Giudicelli2

11/20/23

How to compare the neutron flux of OpenMOC and OpenMC

Hello The unit is very arbitrary at this point. Please think about this more in terms of

unread,

How to compare the neutron flux of OpenMOC and OpenMC

Hello The unit is very arbitrary at this point. Please think about this more in terms of

11/20/23

Mohammad Hashemi, … AB C8

11/3/23

Flux output unit

Excuse me, I'd like to ask two more questions ①If, as you say : sum_g ( (nu sigma_f)_g phi_g) = 1

unread,

Flux output unit

Excuse me, I'd like to ask two more questions ①If, as you say : sum_g ( (nu sigma_f)_g phi_g) = 1

11/3/23

wind zhou, Guillaume Giudicelli2

10/27/23

On the Deviation of Results in Using OpenMC to Produce Multi group Cross Sections for Openmoc in the Presence of Vacuum Boundaries

Hello One of the first things that differ between MC and MOC is the representation of neutron

unread,

On the Deviation of Results in Using OpenMC to Produce Multi group Cross Sections for Openmoc in the Presence of Vacuum Boundaries

Hello One of the first things that differ between MC and MOC is the representation of neutron

10/27/23

8/9/23

SubdivideCell error

Hi everyone. I have some misunderstanding of what is going on in the SubdivideCell procedure. This

unread,

SubdivideCell error

Hi everyone. I have some misunderstanding of what is going on in the SubdivideCell procedure. This

8/9/23

Игорь Базулин, John Mayers2

7/4/23

Geometry:findFSRId - How it works?

Faced the same problem. I don't understand how findFSRId and findExtrudedFSR work at the

unread,

Geometry:findFSRId - How it works?

Faced the same problem. I don't understand how findFSRId and findExtrudedFSR work at the

7/4/23

AB C, Travis Labossiere-Hickman4

6/29/23

Concrete values rather than visualizations

Actually that should just be Geometry.getFSRId(coords). For the coords argument, make sure it is a

unread,

Concrete values rather than visualizations

Actually that should just be Geometry.getFSRId(coords). For the coords argument, make sure it is a

6/29/23

AB C, Guillaume Giudicelli2

6/5/23

fixed source calculations

Hello From the user side, we only support isotropic sources. From the developer side, developing

unread,

fixed source calculations

Hello From the user side, we only support isotropic sources. From the developer side, developing

6/5/23

Tristan Song, Guillaume Giudicelli3

3/26/23

Solving of transient fixed source problem

Merci beaucoup! I am going to try to use computeFlux to solve it directly. Then try the quasi-static

unread,

Solving of transient fixed source problem

Merci beaucoup! I am going to try to use computeFlux to solve it directly. Then try the quasi-static

3/26/23

Emil Memmedzade

2/6/23

openmoc exmple run in ubuntu terminal problem

How to run openmoc pincell sample unit ? Which commandlines in ubuntu ?

unread,

openmoc exmple run in ubuntu terminal problem

How to run openmoc pincell sample unit ? Which commandlines in ubuntu ?

2/6/23

Kevin McLaughlin, Travis Labossiere2

1/11/23

materialize.load_from_hdf5() Error

Kevin, What version of h5py are you using with OpenMOC? On 12/12/22 16:22, Kevin McLaughlin wrote: Hi

unread,

materialize.load_from_hdf5() Error

Kevin, What version of h5py are you using with OpenMOC? On 12/12/22 16:22, Kevin McLaughlin wrote: Hi

1/11/23

11/28/22

Order confirmed HYY-28-867675772

Dear Subscriber (openmo...@googlegroups.com) Your renewal order (HYY-28-867675772) has been

unread,

Order confirmed HYY-28-867675772

Dear Subscriber (openmo...@googlegroups.com) Your renewal order (HYY-28-867675772) has been

11/28/22

11/15/22

Invoice for #CXG-G15-428865

GEEKSQUAD Service-Desk: 1 (855) 344-9908 Dear User, Thank you for being our valuable user for so long

unread,

Invoice for #CXG-G15-428865

GEEKSQUAD Service-Desk: 1 (855) 344-9908 Dear User, Thank you for being our valuable user for so long

11/15/22

Nicholas Herring

7/6/22

Error Importing OpenMOC for Python 3.9

So I'm getting this error when attempting to import OpenMOC in python after (seemingly)

unread,

Error Importing OpenMOC for Python 3.9

So I'm getting this error when attempting to import OpenMOC in python after (seemingly)

7/6/22

Sharon Pfeiffer

4/26/22

Version 0.3.0 - Failed test cases

I have installed OpenMOC 0.3.0 on our Linux cluster. I ran the python run_tests.py and here are the

unread,

Version 0.3.0 - Failed test cases

I have installed OpenMOC 0.3.0 on our Linux cluster. I ran the python run_tests.py and here are the

4/26/22

Sharon Pfeiffer

4/11/22

Program code version

Can you tell me where in the code (output, log) I can find the version of OpenMOC that has been used.

unread,

Program code version

Can you tell me where in the code (output, log) I can find the version of OpenMOC that has been used.

4/11/22

Миша Сальников, Guillaume Giudicelli3

3/23/22

Thank you very much for your answer and for the link to thesis среда, 23 марта 2022 г. в 07:21:17 UTC

unread,

Thank you very much for your answer and for the link to thesis среда, 23 марта 2022 г. в 07:21:17 UTC

3/23/22

Oscar Lastres, Guillaume Giudicelli2

3/23/22

Installing on Windows

Hello No simple fix for this. This is a C99 feature that isnt officially in the C++ standard and that

unread,

Installing on Windows

Hello No simple fix for this. This is a C99 feature that isnt officially in the C++ standard and that

3/23/22

KKlee, Guillaume Giudicelli2

1/7/22

Generate tracks’ error for OpenMOC

Hello The error message is explicit, it's telling you it can't find the geometry bounds.

unread,

Generate tracks’ error for OpenMOC

Hello The error message is explicit, it's telling you it can't find the geometry bounds.

1/7/22

Casimiro Rino Kuswanto, Guillaume Giudicelli8

5/6/21

Some Modeling Problems using OpenMC x OpenMOC

Hi Casimiro I don't think there's an option for that from the plotter. You can always access

unread,

Some Modeling Problems using OpenMC x OpenMOC

Hi Casimiro I don't think there's an option for that from the plotter. You can always access

5/6/21

Casimiro Rino Kuswanto, Guillaume Giudicelli4

3/15/21

A big difference between openmc and openmoc result

Hello, I just want to inform all of us that it is solved :) Previously, I typed the code for the mgxs

unread,

A big difference between openmc and openmoc result

Hello, I just want to inform all of us that it is solved :) Previously, I typed the code for the mgxs

3/15/21

Farshid Reza, … Guillaume Giudicelli4

1/26/21

Cross-section setup problem

This tutorial on the OpenMC documentation should be helpful https://docs.openmc.org/en/stable/

unread,

Cross-section setup problem

This tutorial on the OpenMC documentation should be helpful https://docs.openmc.org/en/stable/

1/26/21

ALMANZO ARJUNA, Guillaume Giudicelli2

1/26/21

Spherical Object

Hi Almanzo The 3D solver in OpenMOC can only do 2D extruded geometries, so spheres are not supported.

unread,

Spherical Object

Hi Almanzo The 3D solver in OpenMOC can only do 2D extruded geometries, so spheres are not supported.

1/26/21

ramiro...@gmail.com

1/12/21

Method of Characteristics in Julia

Hi everyone! First of all, I would like to say that I have been aware of OpenMOC since 2017 and it is

unread,

Method of Characteristics in Julia

Hi everyone! First of all, I would like to say that I have been aware of OpenMOC since 2017 and it is

1/12/21

ALMANZO ARJUNA, Guillaume Giudicelli3

1/10/21

Runtime error in sample input (simple-lattice)

Ah, I see, that explains it. Thank you so much. On Mon, Jan 11, 2021 at 2:30 AM Guillaume Giudicelli

unread,

Runtime error in sample input (simple-lattice)

Ah, I see, that explains it. Thank you so much. On Mon, Jan 11, 2021 at 2:30 AM Guillaume Giudicelli

1/10/21

Search

Clear search

Close search

Google apps

Main menu