lanl-ansi/GasModels.jl

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A Julia/JuMP Package for Gas Network Optimization

Stars: 81
Forks: 25
Open beginner issues: 0
Indexed issues: 46

Dominant language: Julia
License: No license data
Last GitHub push: Sep 2, 2026
Latest indexed: Sep 20, 2026
Contributing guide: No contributing guide
Code of conduct: No code of conduct
Beginner labels: help wanted
PR merge metrics: No merged PRs in 30d

Beginner friendly Everything

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46 open issues indexed

correct equations for w = 0 Open

Difficulty 3/5 1-2 days Newbie friendliness 55/100

lanl-ansi/GasModels.jl#361 · Opened Aug 13, 2026
offer/bid price checker Open

Difficulty 3/5 1-2 days Newbie friendliness 55/100

lanl-ansi/GasModels.jl#360 · Opened Aug 13, 2026
option for modeling inclined pipes Open

Difficulty 3/5 1-2 days Newbie friendliness 55/100

lanl-ansi/GasModels.jl#359 · Opened Aug 5, 2026
Implement relaxations for inclined pipe equations Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

lanl-ansi/GasModels.jl#358 · Opened Aug 5, 2026
add dual variables to unit conversion functions Open

Difficulty 3/5 1-2 days Newbie friendliness 45/100

lanl-ansi/GasModels.jl#352 · Opened Jul 14, 2026
Test for parse_separated_data Open

test cases

Difficulty 2/5 1-3 hours Newbie friendliness 45/100

lanl-ansi/GasModels.jl#350 · 1 comment · Opened Jun 26, 2026
Unify parse_files and parse_seperated_data Open

complex parsers

Difficulty 5/5 Over a week Newbie friendliness 35/100

lanl-ansi/GasModels.jl#349 · Opened Jun 25, 2026
Generalizing adding missing values in solution files Open

complex enhancement help wanted

Difficulty 4/5 3-5 days Newbie friendliness 52/100

lanl-ansi/GasModels.jl#347 · 2 comments · Opened Jun 25, 2026
Preprocess routine for fixing flow direction Open

enhancement

Difficulty 4/5 3-5 days Newbie friendliness 35/100

lanl-ansi/GasModels.jl#337 · Opened May 20, 2026
Storage variables ignore withdrawal/injection parameters Open

edge case

Difficulty 4/5 3-5 days Newbie friendliness 52/100

lanl-ansi/GasModels.jl#336 · Opened May 20, 2026
Suction/discharge pressure constraints Open

formulation update

Difficulty 5/5 Over a week Newbie friendliness 25/100

lanl-ansi/GasModels.jl#335 · Opened May 20, 2026
Descriptive names for variables and constraint functions Open

maintenance

Difficulty 4/5 3-5 days Newbie friendliness 45/100

lanl-ansi/GasModels.jl#334 · Opened May 20, 2026
Unify and deprecate ogf formulations Open

complex formulation update

Difficulty 5/5 Over a week Newbie friendliness 35/100

lanl-ansi/GasModels.jl#333 · 2 comments · Opened May 20, 2026
Complimentarity constraints for transient model Open

formulation update

Difficulty 4/5 3-5 days Newbie friendliness 45/100

lanl-ansi/GasModels.jl#332 · Opened May 20, 2026
Unifying transient and steady-state implementations Open

complex formulation update

Difficulty 5/5 Over a week Newbie friendliness 25/100

lanl-ansi/GasModels.jl#331 · Opened May 20, 2026
transient gas indexing overflow Open

edge case low priority

Difficulty 5/5 Over a week Newbie friendliness 35/100

lanl-ansi/GasModels.jl#330 · 1 comment · Opened May 20, 2026
Bound tightening utility functin Open

enhancement

Difficulty 5/5 Over a week Newbie friendliness 35/100

lanl-ansi/GasModels.jl#329 · Opened May 20, 2026
Density and pressure bounds are (assumed) synonymous Open

formulation update

Difficulty 4/5 3-5 days Newbie friendliness 35/100

lanl-ansi/GasModels.jl#328 · Opened May 20, 2026
Relaxation implementation corner cases (f_min > 0 or f_max < 0) Open

edge case

Difficulty 4/5 3-5 days Newbie friendliness 45/100

lanl-ansi/GasModels.jl#327 · Opened May 20, 2026
Variable temperature Open

complex formulation update help wanted

Difficulty 5/5 Over a week Newbie friendliness 25/100

lanl-ansi/GasModels.jl#321 · 2 comments · Opened May 14, 2026
Tightening of compressor flow bounds Open

enhancement

Difficulty 4/5 3-5 days Newbie friendliness 48/100

lanl-ansi/GasModels.jl#318 · Opened May 14, 2026
Pipe specific temperature parameters Open

complex enhancement

Difficulty 5/5 Over a week Newbie friendliness 45/100

lanl-ansi/GasModels.jl#317 · 3 comments · Opened May 14, 2026
Allow deactivating components past timestep 1 in transient Open

bug complex

Difficulty 3/5 1-2 days Newbie friendliness 55/100

lanl-ansi/GasModels.jl#302 · Opened Apr 1, 2026
Compressor ratio equation defined with two inequalities Open

simple

Difficulty 3/5 1-2 days Newbie friendliness 52/100

lanl-ansi/GasModels.jl#296 · 1 comment · Opened Mar 6, 2026
keep components with status = 0 in solution Open

question simple

Difficulty 3/5 1-2 days Newbie friendliness 52/100

lanl-ansi/GasModels.jl#292 · 8 comments · Opened Feb 18, 2026
Add storage flows to steady-state junction mass balance Open

formulation update

Difficulty 3/5 1-2 days Newbie friendliness 45/100

lanl-ansi/GasModels.jl#290 · Opened Feb 17, 2026
ref_storage Open

formulation update

Difficulty 4/5 3-5 days Newbie friendliness 45/100

lanl-ansi/GasModels.jl#234 · 2 comments · Opened Aug 6, 2021
Dispatchable storage Open

enhancement

Difficulty 5/5 Over a week Newbie friendliness 35/100

lanl-ansi/GasModels.jl#233 · 2 comments · Opened Jul 15, 2021
data integrity checks Open

data problem

Difficulty 4/5 3-5 days Newbie friendliness 45/100

lanl-ansi/GasModels.jl#232 · 1 comment · Opened Jun 17, 2021
DWP: constraint_compressor_energy Open

formulation update simple

Difficulty 4/5 3-5 days Newbie friendliness 30/100

lanl-ansi/GasModels.jl#229 · 1 comment · Opened May 14, 2021
Missing implementations of constraint_compressor_energy Open

formulation update simple

Difficulty 4/5 3-5 days Newbie friendliness 45/100

lanl-ansi/GasModels.jl#228 · 3 comments · Opened May 14, 2021
_ref_calc_flow_direction Open

formulation update

Difficulty 4/5 3-5 days Newbie friendliness 35/100

lanl-ansi/GasModels.jl#201 · Opened Jun 25, 2020
Tighten weymouth upper bound in MISOCP when f_min > 0 or f_max < 0 Open

formulation update

Difficulty 4/5 3-5 days Newbie friendliness 45/100

lanl-ansi/GasModels.jl#200 · Opened Jun 24, 2020
ref functions for compressor friction factors Open

data problem

Difficulty 3/5 1-2 days Newbie friendliness 25/100

lanl-ansi/GasModels.jl#197 · Opened Jun 11, 2020
Revisit outer bounds of weymouth relaxation Open

enhancement formulation update

Difficulty 4/5 3-5 days Newbie friendliness 48/100

lanl-ansi/GasModels.jl#192 · 2 comments · Opened May 14, 2020
propogate_topology_status! Open

enhancement

Difficulty 4/5 3-5 days Newbie friendliness 35/100

lanl-ansi/GasModels.jl#188 · 2 comments · Opened May 4, 2020
Exclusive constraint in ne Open

formulation update simple

Difficulty 4/5 3-5 days Newbie friendliness 35/100

lanl-ansi/GasModels.jl#183 · Opened May 1, 2020
Pull out functions common to transient and steady state models Open

complex enhancement

Difficulty 4/5 3-5 days Newbie friendliness 35/100

lanl-ansi/GasModels.jl#179 · 2 comments · Opened Apr 7, 2020
matgas exporter Open

bug data problem

Difficulty 3/5 1-2 days Newbie friendliness 45/100

lanl-ansi/GasModels.jl#170 · 2 comments · Opened Mar 30, 2020
Constraints for new data fields Open

formulation update

Difficulty 4/5 3-5 days Newbie friendliness 45/100

lanl-ansi/GasModels.jl#165 · 2 comments · Opened Feb 25, 2020
Steady-state model variable space Open

formulation update

Difficulty 5/5 Over a week Newbie friendliness 35/100

lanl-ansi/GasModels.jl#160 · 1 comment · Opened Feb 21, 2020
Add polyhedral relaxation to MIP and LP formulations Open

formulation update

Difficulty 5/5 Over a week Newbie friendliness 20/100

lanl-ansi/GasModels.jl#156 · 3 comments · Opened Feb 21, 2020
objective function without variables defined Open

enhancement

Difficulty 3/5 1-2 days Newbie friendliness 55/100

lanl-ansi/GasModels.jl#143 · 2 comments · Opened Oct 10, 2019
Add support for storage Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

lanl-ansi/GasModels.jl#125 · 3 comments · Opened Sep 16, 2019
Releases Open

version wontfix

Difficulty 2/5 1-3 hours Newbie friendliness 35/100

lanl-ansi/GasModels.jl#94 · 48 comments · Opened Apr 29, 2019
Add Test for Diagnostics.jl Open

maintenance

Difficulty 3/5 1-2 days Newbie friendliness 35/100

lanl-ansi/GasModels.jl#53 · 2 comments · Opened Apr 9, 2018

lanl-ansi/GasModels.jl

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