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Welcome! Here you can ask anything related to Gpyro simulations.

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Han Yuan, … Franklin Cândido Costa6

4/27/20

convergence problem in simulating self-heating ignition (Version 0.8186)

Dear All, I am facing the same convergence problem using issue Gpyro V0.8186. I have changed the

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convergence problem in simulating self-heating ignition (Version 0.8186)

Dear All, I am facing the same convergence problem using issue Gpyro V0.8186. I have changed the

4/27/20

10/30/14

2014 Imperial Gpyro Workshop schedule

Week 1 (22 Oct.): Finishing reading the Gpyro 7.0 Technical reference, and we will have discussion on

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2014 Imperial Gpyro Workshop schedule

Week 1 (22 Oct.): Finishing reading the Gpyro 7.0 Technical reference, and we will have discussion on

10/30/14

11/6/25

DUCTS AND VENTS CLEANING

Hey neighbors, Nelson is coming to my house to clean my Ducts and vent. I had his service last year

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DUCTS AND VENTS CLEANING

Hey neighbors, Nelson is coming to my house to clean my Ducts and vent. I had his service last year

11/6/25

Lauren Anderson

11/6/25

Neighbors! Group Deal on Air Duct Cleaning – Save $100 (Only 2 Spots Left!)

Hey neighbors! I just booked a local tech for duct cleaning (regular price is $300) but he offered me

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Neighbors! Group Deal on Air Duct Cleaning – Save $100 (Only 2 Spots Left!)

Hey neighbors! I just booked a local tech for duct cleaning (regular price is $300) but he offered me

11/6/25

10/26/25

Duct and vents cleaning

𝙃𝙞 𝙉𝙚𝙞𝙜𝙝𝙗𝙤𝙧𝙨! 𝙄 𝙖𝙢 𝙜𝙚𝙩𝙩𝙞𝙣𝙜 𝙢𝙮 𝙙𝙪𝙘𝙩𝙨 𝙖𝙣𝙙 𝙫𝙚𝙣𝙩𝙨 𝙘𝙡𝙚𝙖𝙣𝙚𝙙 𝙗𝙮 𝙍𝙞𝙘𝙖𝙧𝙙𝙤 𝙅𝙖𝙢𝙚𝙨. 𝙒𝙤𝙪𝙡𝙙 𝙖𝙣𝙮𝙤𝙣𝙚 𝙚𝙡𝙨𝙚 𝙞𝙣 𝙩𝙝𝙚

unread,

Duct and vents cleaning

𝙃𝙞 𝙉𝙚𝙞𝙜𝙝𝙗𝙤𝙧𝙨! 𝙄 𝙖𝙢 𝙜𝙚𝙩𝙩𝙞𝙣𝙜 𝙢𝙮 𝙙𝙪𝙘𝙩𝙨 𝙖𝙣𝙙 𝙫𝙚𝙣𝙩𝙨 𝙘𝙡𝙚𝙖𝙣𝙚𝙙 𝙗𝙮 𝙍𝙞𝙘𝙖𝙧𝙙𝙤 𝙅𝙖𝙢𝙚𝙨. 𝙒𝙤𝙪𝙡𝙙 𝙖𝙣𝙮𝙤𝙣𝙚 𝙚𝙡𝙨𝙚 𝙞𝙣 𝙩𝙝𝙚

10/26/25

9/25/25

Annually vents cleaning

Hey folks! We plan on having our annual HVAC vents cleaning I wanted to see if anyone else is

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Annually vents cleaning

Hey folks! We plan on having our annual HVAC vents cleaning I wanted to see if anyone else is

9/25/25

8/28/25

Hi Neighbors! I am getting my ducts and vents cleaned by Ricardo James. Would anyone else in the

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Hi Neighbors! I am getting my ducts and vents cleaned by Ricardo James. Would anyone else in the

8/28/25

8/13/25

GROUP RATE DUCTS AND VENTS CLEANING

Anyone interested? On Tuesday, 12 August 2025 at 06:20:53 UTC+5 Alan Hall wrote: Hi Neighbors! I am

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GROUP RATE DUCTS AND VENTS CLEANING

Anyone interested? On Tuesday, 12 August 2025 at 06:20:53 UTC+5 Alan Hall wrote: Hi Neighbors! I am

8/13/25

Lukas Heydick, … Guillermo Rein5

4/28/25

Peat Smouldering Set-Up not working

Brilliant. And please let me know if there is anything you want to discuss. We are very active on tbe

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Peat Smouldering Set-Up not working

Brilliant. And please let me know if there is anything you want to discuss. We are very active on tbe

4/28/25

Srdjan Simunovic, Alexander Castagna5

2/17/25

Gpyro source code

Dear Srdjan, Please find the version here: https://drive.google.com/file/d/

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Gpyro source code

Dear Srdjan, Please find the version here: https://drive.google.com/file/d/

2/17/25

Takashi Odagiri, … Davood Zeinali7

1/27/25

Defining autocatalytic reaction in Gpyro

Dear all, I am now looking into use of kinetic model 9 (Catalytic) to express an induction time in my

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Defining autocatalytic reaction in Gpyro

Dear all, I am now looking into use of kinetic model 9 (Catalytic) to express an induction time in my

1/27/25

Auriane Javaloyes

7/2/24

Modelling a problem in polar coordinates on GPyro

Hello all, I am studying the ignition of vegetation by hot metal particles ejected by power lines, I

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Modelling a problem in polar coordinates on GPyro

Hello all, I am studying the ignition of vegetation by hot metal particles ejected by power lines, I

7/2/24

Alexander Castagna

5/21/24

Gpyro 2D simulations

Hi All, I am looking into becoming more familiar with modelling pyrolysis and smouldering of wood in

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Gpyro 2D simulations

Hi All, I am looking into becoming more familiar with modelling pyrolysis and smouldering of wood in

5/21/24

8/3/23

Floating-point exception - erroneous arithmetic operation

Hi all - I am using Gpyro's capabilities as a thermal property estimator. I have 8 specimens to

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Floating-point exception - erroneous arithmetic operation

Hi all - I am using Gpyro's capabilities as a thermal property estimator. I have 8 specimens to

8/3/23

Maryam Javid Nejad, Juan Hidalgo Medina2

8/26/21

A model for the oxidative pyrolysis

Dear Gpyro gurus at Imperial College, At UQ we have been trying to use the latest version of Gpyro (

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A model for the oxidative pyrolysis

Dear Gpyro gurus at Imperial College, At UQ we have been trying to use the latest version of Gpyro (

8/26/21

Jayani, … oguakabc3

6/29/21

Download version 0.8175

Hello team This link http://reaxengineering.com/trac/gpyro/wiki to download Version 0.8175 is not

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Download version 0.8175

Hello team This link http://reaxengineering.com/trac/gpyro/wiki to download Version 0.8175 is not

6/29/21

5/19/21

Recent papers using Gpyro

Hello all, I always want to learn about research and studies conducted with Gpyro. It helps us in

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Recent papers using Gpyro

Hello all, I always want to learn about research and studies conducted with Gpyro. It helps us in

5/19/21

5/19/21

The latest version of the Gpyro Workbook is now online

Hello Gpyro users, As many of you probably know, my group produced a workbook to help Gpyro users.

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The latest version of the Gpyro Workbook is now online

Hello Gpyro users, As many of you probably know, my group produced a workbook to help Gpyro users.

5/19/21

5/13/21

Output the profles with volume change (deformation of cell ) in Smokeview

Dear all, As we all know that being able to simulate the volume change is one essential feature that

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Output the profles with volume change (deformation of cell ) in Smokeview

Dear all, As we all know that being able to simulate the volume change is one essential feature that

5/13/21

Jayani Jayasuriya, Han Yuan8

2/18/21

Convergence issues with 2-D simulations

Hi Han, Looks like your executable is in windows. Since I work in linux, It will be great if you

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Convergence issues with 2-D simulations

Hi Han, Looks like your executable is in windows. Since I work in linux, It will be great if you

2/18/21

2/12/21

2D simulations of Regression

Dear All, As we all know that Gpyro(V0.8) can calculate the volume change of cells. But the volume

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2D simulations of Regression

Dear All, As we all know that Gpyro(V0.8) can calculate the volume change of cells. But the volume

2/12/21

hexuanze, frarich3

2/3/21

A problem in using Volumetric heat loss coefficient

Dear Franz, Thank you for your reply. I believe this Volumetric heat loss coefficient (hvl) setting

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A problem in using Volumetric heat loss coefficient

Dear Franz, Thank you for your reply. I believe this Volumetric heat loss coefficient (hvl) setting

2/3/21

Timothy Simmons, … Chris Lautenberger5

9/1/20

Convergence issues

Git doesn't store empty folders so even though the build folders were committed they're not

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Convergence issues

Git doesn't store empty folders so even though the build folders were committed they're not

9/1/20

Franklin Cândido Costa, Xinyan Huang2

4/21/20

Simulating the Moss Peat Case presented in Paper "Thermochemical conversion of biomass..." by G. Rein and Huang, 2016

Perhaps, you did not convert the pre-exponential factor (A). Please check the appendix of the paper.

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Simulating the Moss Peat Case presented in Paper "Thermochemical conversion of biomass..." by G. Rein and Huang, 2016

Perhaps, you did not convert the pre-exponential factor (A). Please check the appendix of the paper.

4/21/20

Rein, Guillermo

4/4/20

Draft of new Gpyro Workbook: open for comments

Dear Gpyro users, We have create a new draft of the workbook. It is attached for comments. Main

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Draft of new Gpyro Workbook: open for comments

Dear Gpyro users, We have create a new draft of the workbook. It is attached for comments. Main

4/4/20

3/11/20

different layers not interacting

Hello guys, So I am trying to create a sandwich panel in Gpyro_0.700 with surface convection on

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different layers not interacting

Hello guys, So I am trying to create a sandwich panel in Gpyro_0.700 with surface convection on

3/11/20

Rein, Guillermo, Han Yuan2

3/3/20

Prediction of organic aerosol precursor emission from the pyrolysis

Thanks for sharing Guillermo. The attached is another research paper conducted using Gpyro:

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Prediction of organic aerosol precursor emission from the pyrolysis

Thanks for sharing Guillermo. The attached is another research paper conducted using Gpyro:

3/3/20

Alexandra.D, Richter, Franz H2

3/2/20

Adding a metal plate layer in gpyro_0.8186

Dear Alexandra, I am not aware of anyone having done this in the 0.8 version. However, Izabella did

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Adding a metal plate layer in gpyro_0.8186

Dear Alexandra, I am not aware of anyone having done this in the 0.8 version. However, Izabella did

3/2/20

Alexandra.D, … Han Yuan5

2/26/20

slow convergence gpyro_0.700

Sometimes, It really gets slow in the new version. I'll take another look. Can it run to

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slow convergence gpyro_0.700

Sometimes, It really gets slow in the new version. I'll take another look. Can it run to

2/26/20

2/25/20

A problem in simulating heat transfer between two solid layers

Dear Gpyro users, I have encountered an issue when I try to simulate the heat transfer between two

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A problem in simulating heat transfer between two solid layers

Dear Gpyro users, I have encountered an issue when I try to simulate the heat transfer between two

2/25/20

poppy.fryer, frarich3

1/30/20

wood pyrolysis simulation won't run

Dear all, it seems that the problem only appears in the 0.8 version, while the model runs well in the

unread,

wood pyrolysis simulation won't run

Dear all, it seems that the problem only appears in the 0.8 version, while the model runs well in the

1/30/20

Jayani, Rein, Guillermo2

9/20/19

Adding a body heat loss term in 1-D domain

Yes, indeed. You can use the volumetric heat transfer coefficient to account for losses in any

unread,

Adding a body heat loss term in 1-D domain

Yes, indeed. You can use the volumetric heat transfer coefficient to account for losses in any

9/20/19

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