Validation of dispersion simulations using PDR-FOAM - ukelg

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SUB-GRID JET MODEL – FLASHING CASE (CO2) Horizontal liquid CO2 release at 150 bar. ←Concentration vs. distance Temperature vs. distance → Copyright of Shell Research Ltd October 2012 26
SAMPLE EXCEEDANCE CURVE Use JIP rig geometry. Use wind rose from a previous project. Assume some plant items in 10 distinct 2 m cubes within the rig. Assume that each item has 25 and 50 mm releases. Assume some leak frequencies. Discretize wind into 8 directions (N, NE, etc). For each leak scenario do at least two releases for each wind direction – one in lower half of wind speed probability distribution one in lower half. Leak direction is random. Leak location random within cube. Number of repeats for each leak scenario depends on leak rate and frequency. Copyright of Shell Research Ltd October 2012 27
Page 1 and 2: GAS DISPERSION WITH OPENFOAM Chris
Page 3 and 4: AGENDA Introduction/Motivation Open
Page 5 and 6: DESIGN OVERPRESSURE Understanding
Page 7 and 8: LEAK SCENARIOS An individual releas
Page 9 and 10: PREVIOUSLY... The Shell methodology
Page 11 and 12: OPENFOAM (1) Open source CFD code.
Page 13 and 14: SOLVER OVERVIEW Basis: Compressibl
Page 15 and 16: THEMODYMAMICS Solver accepts table
Page 17 and 18: FULL-SCALE: JIP RIG ← Physical ri
Page 19 and 20: RESULTS: FLAMMABLE GAS VOLUME Expe
Page 21 and 22: CASE C05 CFD RESULTS Concentration
Page 23 and 24: CASE A02 CFD RESULTS (OPENFOAM UNDE
Page 25: SUB-GRID JET MODEL ↑ Free choked
Page 29 and 30: SAMPLE EXCEEDANCE CURVE A typical

Validation of dispersion simulations using PDR-FOAM - ukelg

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