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  • 1. GASFLOW Code
    • 1.1. Overview
    • 1.2. Code Approach
    • 1.3. Code Features
    • 1.4. Graphical User Interface
    • 1.5. Code V&V
    • 1.6. Application Highlights
    • 1.7. Publications
    • 1.8. Current Activities
  • 2. Tutorials
    • 2.1. Overview
    • 2.2. Sod's Shock Tube Problem
    • 2.3. Mesh Generation from CAD Models
    • 2.4. 2D Lid-driven Cavity Flow
    • 2.5. Hydrogen Diffusion into Air in a 1D Duct
    • 2.6. Supersonic Flow over a Forward-facing Step
    • 2.7. Vented Explosion of Premixed Hydrogen-Air Mixtures
    • 2.8. Transient Laminar Jet Flow at Low Mach Number Regime
  • 3. Brief User Guide
    • 3.1. Overview
    • 3.2. General User Guidance
    • 3.3. Unit System and Files
    • 3.4. Mesh Generation
    • 3.5. Geometry Definition
    • 3.6. Numerical Control
    • 3.7. Gas Species and Properties
    • 3.8. Initial and Boundary Conditions
    • 3.9. Solid Heat Structures
    • 3.10. Physical Models
    • 3.11. Restart and Output
    • 3.12. GASFLOW Parallelization
  • 4. Pre- and Post-Processing Tools
    • 4.1. GASVIEW
    • 4.2. Pyscan
    • 4.3. Create3D
  • 5. Verification and Validation
    • 5.1.Overview
    • 5.2. Fluid Dynamics
      • [AS-FD 1] Steady-State and Laminar Flow Startup
      • [AS-FD 2] Transient Compressible Flow
      • [AS-FD 3] Diffusion of Hydrogen into Air
      • [AS-FD 4] Flow past a Rectangular Block
      • [AS-FD 5] 1D Flow with an Orifice
      • [ED-FD 1] Incompressible Laminar Flow in a Lid-driven Cavity
      • [ED-FD 2] Stationary Turbulent Channel Flow
      • [ED-FD 3] Turbulent Flow between Two Parallel Plates
      • [ED-FD 4] Flow over Backward-Facing Step
      • [ED-FD 5] Transient Supersonic Flow at Mach 3 over a Forward-facing Step
      • [ED-FD 6] Large Eddy Simulations of the Turbulent Jet Flow
      • [ED-FD-7] Hydrogen Turbulent Dispersion in Nuclear Containment Compartment
      • [ED-FD 8] Buoyant Jet from Unintended Hydrogen Release
      • [ED-FD 9] Radiolytic Gas Accumulation in a Pipe
      • [ED-FD 10] Supersonic Flow at Mach 2 over a Backward Facing Step
    • 5.3. Combustion
      • [ED-CM 1] BOM Spherical Combustion Chamber
      • [ED-CM 2] SNL Flame Acceleration Measurement Facility Experiment
      • [ED-CM 3] Hydrogen Deflagration in a Multi-compartment System
      • [ED-CM 4] Hydrogen Jet Fire in a Compartment with Venting Hole
      • [ED-CM 5] Hydrogen-Air Fast Deflagration in ENACCEF Facility
      • [ED-CM 6] Detonation of Premixed H2-Air Mixture in a Hemispherical Balloon
      • [ED-CM 7] H2 Deflagration at a Refueling Station
      • [ED-CM 8] Methane-Air Explosion in LLEM
      • [ED-CM 9] Hydrogen-Methane Combution in a 20 L Spherical Vessel
    • 5.4. Heat and Mass Transfer
      • [AS-HT 1] Steady-State Heat Transfer through a Wall
      • [AS-HT 2] Pressure-Volume Work Term 1: Equilibrium Case
      • [AS-HT 3] Thermodynamic Benchmarks
      • [AS-HT 4] Uniform Energy Addition to Stagnant Fluid
      • [ED-HT 1] Natural Convection in an Air-filled Square Cavity
      • [ED-HT 2] Validation of the condensation model with COPAIN facility
      • [ED-HT 3] Heat and mass transfer of a thin film model in a channel
      • [ED-HT 4] Validation of the Film Model in the Integral Test Facility for Passive Containment Cooling
      • [ED-HT 5] Stratification Erosion Benchmark
      • [ED-HT 6] Battelle Containment HYJET Test JX7
      • [ED-HT 7] Battelle GX Tests
      • [ED-HT 8] Tests in ThAI Facility
      • [ED-HT 9] HDR Tests
      • [ED-HT 10] Phebus Thermal Hydraulic Tests
      • [ED-HT 11] Test Tosqan ISP47
      • [ED-HT 12] Test MISTRA ISP47
      • [ED-HT 13] Panda SETH Test Program
    • 5.5. Multiphase Flow
      • [AS-MP 1] Particle Terminal Velocity
      • [AS-MP 2] Water droplet evaporation
      • [ED-MP 1] Spray Single Droplet Test
      • [ED-MP 2] Spray Droplets Test 113 at IRSN TOSQAN
      • [ED-MP 3] Spray Droplets Test 101 at IRSN TOSQAN
  • 6. APPLICATION HIGHLIGHTS
    • 6.1. H2 Fuel Cell Vehicle Accident in Tunnel
    • 6.2. Hydrogen Explosion in a Refueling Station
    • 6.3. Hydrogen Explosion at Fukushima Accident
    • 6.4. Methane Explosion in the Roadway of a Coal Mine
    • 6.5. Aerosols and Droplets
      • 6.5.1. Coronavirus Aerosol Transmission
      • 6.5.2. Water Droplets
  • 7. Ongoing Development and Enhancements
    • 7.1. Combustion Modeling
      • 7.1.1. Multi-step Global Methane Combustion Models
        • 7.1.1.1. One-step Reaction Mechanism
        • 7.1.1.2. Two-step Reaction Mechanism
        • 7.1.1.3. Three-step Reaction Mechanism
        • 7.1.1.4. Four-step Reaction Mechanism
        • 7.1.1.5. Five-step Reaction Mechanism
        • 7.1.1.6. FAQ
      • 7.1.2. Laminar Flame Speed Correlations for Methane-air Mixtures
        • 7.1.2.1. Stone's Correlation
        • 7.1.2.2. Elia's Correlation
        • 7.1.2.3. Takizawa's Correlation
        • 7.1.2.4. Liao's Correlation
      • 7.1.3. Turbulent Flame Speed Correlations for Methane-air Mixtures
      • 7.1.4. Correction of Effective Turbulent Burning Velocity for Lean Hydrogen-air Mixtures
      • 7.1.5. Induction Time Model
      • 7.1.6. Detailed Chemical Kinetic Modeling
      • 7.1.7. Jet Flame Modeling
    • 7.2. Discrete Particle Modeling
      • 7.2.1. Particle mass in user-defined volumes - volpardef
      • 7.2.2. Particle injection from ring shaped volumes
    • 7.3. Heat Transfer Modeling
      • 7.3.1. Time-dependent tables for heat flux and heat transfer coefficient in sinkdef
      • 7.3.2. Thermal Radiation Model for Water Vapor and Carbon Dioxide
  • 8. INPUT FILE EXAMPLES
    • 8.1. Overview
    • 8.1. Fluid Dynamics
  • 8.2. Combustion
  • 8.3. Heat Transfer
  • 8.4. Multiphase Flow
  • 8.5. Applications
  • 9. Frequently Asked Questions
    • 9.1. How to set up models for the flashing of pressurized water?
  • 9.2. How to run GASFLOW on Windows?
  • 9.3. How to export/import WSL distribution?
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On this page
  • 1) Hydrogen Safety Analysis during Severe Accident in Nuclear Power Plants
  • 2) Hypothetical Hydrogen Fuel Cell Vehicle Accident in a Refueling Station
  • 3) Hypothetical Hydrogen Fuel Cell Vehicle Accident in Tunnel
  • 4) Hydrogen Explosion in a Refueling Station
  • 5) Hydrogen Explosion at Fukushima Accident
  • 6) Methane Explosion in the Roadway of a Coal Mine
  • 7) Coronavirus Aerosol Transmission and Infection Risk Analysis

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  1. 1. GASFLOW Code

1.6. Application Highlights

Previous1.5. Code V&VNext1.7. Publications

Last updated 1 year ago

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1) Hydrogen Safety Analysis during Severe Accident in Nuclear Power Plants

GASFLOW code has been widely utilized for performing 3D hydrogen safety analysis in nuclear power plants in countries like Germany, Hungary, the Netherlands, Korea, Austria, China, Switzerland, Mexico, and Finland.

Jianjun Xiao*, John R. Travis, Peter Royl, Gottfried Necker, Anatoly Svishchev, Thomas Jordan, Three-dimensional all-speed CFD code for safety analysis of nuclear reactor containment: Status of GASFLOW parallelization, model development, validation and application, Nuclear Engineering and Design, Volume 301, 2016, Pages 290-310. .

2) Hypothetical Hydrogen Fuel Cell Vehicle Accident in a Refueling Station

Hydrogen Dispersion and Explosion Modeling Using GASFLOW-MPI

3) Hypothetical Hydrogen Fuel Cell Vehicle Accident in Tunnel

Hydrogen Dispersion, Jet Fire and Explosion Modeling Using GASFLOW-MPI

4) Hydrogen Explosion in a Refueling Station

Hydrogen Explosion Modeling Using GASFLOW-MPI

5) Hydrogen Explosion at Fukushima Accident

Hydrogen Dispersion, Explosion and Blast Wave Propagation Modeling Using GASFLOW-MPI

6) Methane Explosion in the Roadway of a Coal Mine

Methane Explosion and Blast Wave Propagation Modeling Using GASFLOW-MPI

7) Coronavirus Aerosol Transmission and Infection Risk Analysis

Fangnian Wang, Jianjun Xiao*, Mike Kuznetsov, Wolfgang Breitung, Binbin He, Shengchao Rui, Shangyong Zhou, Thomas Jordan, Ke Song, Lijun Zhang, Deterministic Risk Assessment of Hydrogen Leak from a Fuel Cell Truck in a Real-scale Hydrogen Refueling Station, International Journal of Hydrogen Energy, 2023, , ISSN 0360-3199, .

Yabing Li, Jianjun Xiao*, Han Zhang, Wolfgang Breitung, Jack Travis, Mike Kuznetsov, Thomas Jordan, Numerical analysis of hydrogen release, dispersion and combustion in a tunnel with fuel cell vehicles using all-speed CFD code GASFLOW-MPI, International Journal of Hydrogen Energy, Volume 46, Issue 23, 2021, Pages 12474-12486,

Fangnian Wang, Jianjun Xiao*, Thomas Jordan, GASFLOW-MPI analysis on deflagration in full-scale hydrogen refueling station experiments: H2-air premixed cloud and high-pressure H2 jet, International Journal of Hydrogen Energy, Volume 47, Issue 32, 2022, Pages 14725-14739, .

Jianjun Xiao*, Wolfgang Breitung, M. Kuznetsov, H. Zhang, John R. Travis, R. Redlinger, Thomas Jordan, GASFLOW-MPI: A new 3-D parallel all-speed CFD code for turbulent dispersion and combustion simulations Part II: First analysis of the hydrogen explosion in Fukushima Daiichi Unit 1, International Journal of Hydrogen Energy, March 2017,

Yuntao Liang, Baiwei Lei, Shuanglin Song, Jianjun Xiao, Mike Kuznetsov, Thomas Jordan, Numerical analysis of the distribution of combustion products from methane explosions in a full-scale tunnel using all-speed CFD code GASFLOW-MPI, Energy Sources, Part A: Recovery, Utilization, and Environmental Effects, 45:3, 2023, 7105-7121, .

https://doi.org/10.1016/j.ijhydene.2023.09.114
https://doi.org/10.1016/j.ijhydene.2020.09.063
https://doi.org/10.1016/j.ijhydene.2022.02.215
https://doi.org/10.1016/j.ijhydene.2017.01.219
https://doi.org/10.1080/15567036.2023.2219228
https://doi.org/10.1016/j.nucengdes.2015.12.033
GASFLOW Applications to 3D Hydrogen Safety Analysis in Nuclear Power Plants
GASFLOW-MPI Simulation of Hydrogen Release and Dispersion below the Ceiling of a Refueling Station
GASFLOW-MPI Simulation of Hydrogen Deflagration below the Ceiling of a Refueling Station: Pressure
GASFLOW-MPI Simulation of Hydrogen Deflagration below the Ceiling of a Refueling Station: Temperature
GASFLOW-MPI Simulations of Hydrogen Release, Jet Fire and Explosion in a HFCV Accident in Tunnel
GASFLOW-MPI Simulation of Hydrogen Explosion in a Refueling Station
GASFLOW-MPI Simulations of Hydrogen Dispersion, Explosion and Blast Wave Propagation at Fukushima Daiichi Accident
GASFLOW-MPI Simulation of Blast Wave Propagation (Pa)
GASFLOW-MPI Calculation Results of Blast Wave Propagation
3D GASFLOW-MPI Geometry Model of Experimental Roadway of Lake Lynn, United States
GASFLOW-MPI Simulation of Methane Explosion in the Experimental Roadway of Lake Lynn, United States
Comparisons of Experimental Data and GASFLOW-MPI Calculation Results
GASFLOW-MPI Simulation of Coronavirus Transmission in a Restaurant with Air Conditioner
GASFLOW-MPI Simulation of Coronavirus Transmission and Remove in a Small Office
GASFLOW-MPI Simulation of Coronavirus Transmission and Remove in a Classroom