NauticalCFD Services Oct_2022.pdf
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NauticalCFD provides multiphysics numerical simulations and customized software for unusual marine problems. They use computational fluid dynamics (CFD) analysis to suggest combinations of energy saving devices that can reduce resistance and increase vessel speed. This analysis can be done for new and existing ships, optimizing trim, hull forms, and propulsion systems to potentially reduce fuel consumption by up to 40% through optimizations and another 15-30% through added energy saving devices. They recommend specific devices like ducts, fins, and propeller modifications that have been shown effective through CFD simulations.
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NauticalCFD Services Oct_2022.pdf
- 1. CFD Solutions for Shipping Industry Dr. M. Elangovan, M.E. (Dgn.), Ph.D. (Japan) Technical Director www.NauticalCFD.com
- 2. About Us ➢ Provide Multiphysics Numerical simulations for unusual marine problems. ➢ Suggest suitable combination of Energy saving device (ESD) to reduce the resistance and increase the vessel speed. ➢ Development of customized marine software for the routine and manual work. EEXI
- 3. CFD Analysis for New and Existing Ship
- 4. CFD for different Applications and Projects â–ªNumerical Wave Tank (Unsteady waves) â–ªSlamming, Sloshing and Runup â–ªGreen Water and Wedge Impact load analysis â–ªAnalysis of propeller â–ªTrim curve generation using CFD â–ªDuct performance analysis using CFD â–ªPlanner motion mechanism (Maneuvering)
- 5. Existing ship fails ➢ When the vessel gets operated at different The vessel is efficient for the designed speed, draft and trim Speed, Draft and Trim CFD Analysis → Reduction of Fuel Oil consumption
- 6. To Bow? To Stern? Even Keel? Mean Draft Speed Trim Optimum Trim
- 7. 3% Extra Fuel Consumption 3% Fuel Savings
- 8. Hydrodynamic and Energy Saving Devices 1. HULL i. Fore body shape ii. Aft body shape iii. Asymmetric aft body iv. Stern tunnel v. Twin skeg 2. PROPELLER i. Contracted & loaded tip propellers ii. Contra rotating propellers iii. Highly skewed propeller iv. Controllable pitch propeller v. New blade section propeller vi. Number of propeller blades Propeller Zone A. Before Propeller i. Grothues Spoilers ii. Schneekluth duct/nozzle iii. Mewis Duct iv. Becker Mewis duct v. Becker Mewis duct-twisted vi. Hitachi Zosen Nozzle vii. Wake equalizing and flow separation alleviating devices viii. Pre-swirl Fins and stators (devices) ix. Simplified compensative nozzle B. At Propeller i. Mitsui integrated ducted propeller ii. Tip modified propeller iii. Kappel propeller iv. New blade section propeller v. Number of blade propeller blades vi. Kort nozzle vii. Hitachi Zosen nozzle viii. Contracted and loaded tip(CLT) propeller C. After Propeller i. Post-swirl stators ii. Post-swirl devices iii. Post-swirl stators and ducts (devices) iv. Propeller boss cap v. Propeller boss cap fins vi. Divergent propeller cap vii. Propeller cap turbines viii. Grim vane wheel ix. Hub vortex vane propeller x. Vortex generator xi. Simplified compensative Nozzle xii. Stator fin xiii. Hub vortex vane Rudder Zone A. Before Rudder i. Becker flap ii. Becker flap with closed linkage iii. Rudder bulb system iv. Kawasaki rudder-bulb fins v. IHI additional thrusting fins vi. Becker nozzle vii. Rudder bulp B. At Rudder i. Rudder thrust fins (Rudder fins) ii. Becker twist iii. Twisted rudder iv. Twisted trailing edge v. Asymmetric rudder vi. Becker schilling C. After Rudder i. Becker steering nozzle ii. Stern flap iii. Becker flap iv. Becker flap with closed linkage v. Becker Schilling vi. Becker Twisted trailing edge vii. Twisted leading edge rudder 3. Skin friction reduction A. Air lubrication i. Air cavity system ii. Micro-bubbles iii. Air film B. Hull surface texturing 4. Renewable energy A. Wind i. Towing kites ii. Rotar sails iii. Turbo sail iv. Flettner rotors v. Wind mills B. Solar
- 9. Highly Recommended ESD ➢ Kort nozzle, ➢ Propeller boss fin cap ➢ Stators ➢ Rudder thrust fins ➢ Rudder bulbs ➢ Vortex generators ➢ Semi –circular duct ➢ Mewls duct ➢ Wake equalizing duct & ➢ Becker Mewls duct ➢ Fins ➢ Ducting
- 12. Using CFD Simulations and Analysis Suitable combination of Energy Saving Devices (ESD) can be suggested with Numerical Verification
- 13. Approximate savings in percentage 1. Hull form optimization 2. Propulsion system optimization + Energy Saving Devices 3. Trim Optimization CFD ~ 40 % ~ 15 % ~ 30 % ~ 20 %
- 14. CFD Software
- 15. ➢ Trim curve in excel file for the practical operational profile (speed, draft and trim) to reduce the fuel oil consumption (Up to 6%). ➢ Suitable combination of Energy saving device to improve the ship performance by reducing the engine power for the same speed (Up to 15%) NauticalCFD can Offer
- 16. Thank you ! Contact Us Sales & Business: Ms. Swetha Email: Shweta@proglobalmarine.com M: 877 720 4431