SUC Brasil 2012 : Coupled Analysis of Hose Loadings in a Tandem Offloading Operation
1. Coupled analysis of hose loadings in a tandem
offloading operation
Carlos Eduardo Souza – Research Scientist, MARINTEK do Brasil
Rio de Janeiro, 03/12/2012
Norwegian Marine Technology Research Institute
2. Description
• Objective: evaluation of hose loads during an offloading operation
• System description:
− 269 m FPSO (mean load) – catenary mooring system
− 269 m DP-Shuttle Tanker (ballasted)
− 129.8 m offloading hose
• Coupled analysis:
Vessels motions Hose loads
simulated with simulated with
SIMO RIFLEX
3. Description
• Initial vessels positions correspondent to the hose stress free condition
Tanker FPSO
• DP system leads the tanker to the final position
4. Modeling in SIMA environment
1. Import SIMO sys-files for each of the ships
− Catenary moored FPSO
− DP shuttle tanker
2. Create a RIFLEX coupled task
3. Create environment
− Current (Vc = 0.5 m/s, α = 155°)
− Waves (Hs = 2.5 m, Tp = 9.0 s, β = 170°)
− Wind (Vw = 12 m/s, γ = 170º)
4. Import RIFLEX input files
− Cross section, line type and supernodes for the hose
5. Finalize coupled system
− Create supernodes on both vessels CG’s.
− Make hose supernodes slave of the CG supernodes
− Create dummy cross section, dummy line type and dummy lines
− Create AR connection for each ship
6. Calculation parameters
5. Modeling in SIMA environment
1. Import SIMO sys-files for each of the ships
− Catenary moored FPSO
− DP shuttle tanker
2. Create a RIFLEX coupled task
3. Create environment
− Current (Vc = 0.5 m/s, α = 155°)
− Waves (Hs = 2.5 m, Tp = 9.0 s, β = 170°)
− Wind (Vw = 12 m/s, γ = 170º)
4. Import RIFLEX input files
− Cross section, line type and supernodes for the hose
5. Finalize coupled system
− Create supernodes on both vessels CG’s.
− Make hose supernodes slave of the CG supernodes
− Create dummy cross section, dummy line type and dummy lines
− Create AR connection for each ship
6. Calculation parameters
6. Modeling in SIMA environment
1. Import SIMO sys-files for each of the ships
− Catenary moored FPSO
− DP shuttle tanker
2. Create a RIFLEX coupled task
3. Create environment
− Current (Vc = 0.5 m/s, α = 155°)
− Waves (Hs = 2.5 m, Tp = 9.0 s, β = 170°)
− Wind (Vw = 12 m/s, γ = 170º)
4. Import RIFLEX input files
− Cross section, line type and supernodes for the hose
5. Finalize coupled system
− Create supernodes on both vessels CG’s.
− Make hose supernodes slave of the CG supernodes
− Create dummy cross section, dummy line type and dummy lines
− Create AR connection for each ship
6. Calculation parameters
7. Modeling in SIMA environment
1. Import SIMO sys-files for each of the ships
− Catenary moored FPSO
− DP shuttle tanker
2. Create a RIFLEX coupled task
3. Create environment
− Current (Vc = 0.5 m/s, α = 155°)
− Waves (Hs = 2.5 m, Tp = 9.0 s, β = 170°)
− Wind (Vw = 12 m/s, γ = 170º)
4. Import RIFLEX input files
− Cross section, line type and supernodes for the hose
5. Finalize coupled system
− Create supernodes on both vessels CG’s.
− Make hose supernodes slave of the CG supernodes
− Create dummy cross section, dummy line type and dummy lines
− Create AR connection for each ship
6. Calculation parameters
8. Modeling in SIMA environment
1. Import SIMO sys-files for each of the ships
− Catenary moored FPSO
− DP shuttle tanker
2. Create a RIFLEX coupled task
3. Create environment
− Current (Vc = 0.5 m/s, α = 155°)
− Waves (Hs = 2.5 m, Tp = 9.0 s, β = 170°)
− Wind (Vw = 12 m/s, γ = 170º)
4. Import RIFLEX input files
− Cross section, line type and supernodes for the hose
5. Finalize coupled system
− Create supernodes on both vessels CG’s.
− Make hose supernodes slave of the CG supernodes
− Create dummy cross section, dummy line type and dummy lines
− Create AR connection for each ship
6. Calculation parameters
9. Modeling in SIMA environment
1. Import SIMO sys-files for each of the ships
− Catenary moored FPSO
− DP shuttle tanker
2. Create a RIFLEX coupled task
3. Create environment
− Current (Vc = 0.5 m/s, α = 155°)
− Waves (Hs = 2.5 m, Tp = 9.0 s, β = 170°)
− Wind (Vw = 12 m/s, γ = 170º)
4. Import RIFLEX input files
− Cross section, line type and supernodes for the hose
5. Finalize coupled system
− Create supernodes on both vessels CG’s.
− Make hose supernodes slave of the CG supernodes
− Create dummy cross section, dummy line type and dummy lines
− Create AR connection for each ship
6. Calculation parameters