Post on 20-May-2018
Naval Architecture and Ocean Engineering at TUHH
(Hamburg University of Technology)
Katrin Ellermann
Institute for Fluid Dynamics and Ship Theory
Institutes of Naval Architecture at TUHH:
• Institute of Ship Design and Ship Safety (M-06)
• Institute of Fluid Dynamics and Ship Theory (M-08)
• Institute of Ship Structural Design and Analysis (M-10)
Institutes working mostly on Naval Architecture at TUHH:
• Institute of Energy Systems (M-05), Marine Engineering
• Institute of Electrical Power Systems and Automation (M-04)
• Institute of Production Management and Technology (M-18)
Naval Architecture at TUHH
Institute for Fluid Dynamics and Ship Theory
• Wind Tunnel
– Wind Speeds up to 55 m/s
– Open or Closed Circuit
– Open / Slotted-Wall Test Section
• various nozzles (4m², 6m²)
• test-section length 5.5 m
– Pressure & Velocity Measurements
– 6-Component Balance
3
Experimental Facilities (1)
Institute for Fluid Dynamics and Ship Theory
• Towing Tank (access via HSVA)
– Max. Towing Speed: 3.5 m/s
– Wave Generator
• Cavitation Tunnel (access via HSVA)
– Rect. Test Section: 0.57 m x 0.57 m x 2.2 m
– Min. Cavitation Number: 0.5
– Vmax = 10 m/s, pmax = 1.5 bar
4
Experimental Facilities (2)
Institute for Fluid Dynamics and Ship Theory
5
Nonlinear stochastic dynamics
• Modeling of environmental loads
• Stochastic dynamic response of offshore structures
• Development of numerical techniques
• Critical operating conditions and probability of occurrence
Currents, tides
Wind
Waves
Currents, tides
x
x
First-passage time
• Regular large displacements
• Sudden bursts
• Transient behavior
time
dis
pla
ce
me
nt
Institute for Fluid Dynamics and Ship Theory
7
J. Reimers, J.-P. Soproni
Process capability
Actual process spread
Allowable process spread
LSL USL µ
~ ~
~ ~
Process capability and normal distribution
Process Spread
J. Reimers
Limits for process capability
-4 -2 0 2 4 6 8 0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
Maximum Position [m]
Pro
ba
bili
ty d
en
sity [
1/m
]
Limit for Cp,Cpk Limit for RV, RVk
J. Reimers