NauticalCFD provides computational fluid dynamics (CFD) solutions and consultancy services for the marine industry. Their services include hull form and propulsion system optimization using CFD to improve efficiency, analysis of energy saving devices, trim optimization to reduce power requirements, and development of customized marine software. They have expertise in applications such as ship resistance, seakeeping, maneuvering, and propeller

1. CFD Solutions
for
Marine Industry
Dr. M. Elangovan,
M.E. (Dgn.), Ph.D. (Japan)
Technical Director
RD & Consulting Services
www.NauticalCFD.com

2. About Us
© Bond Marine Consultancy UK
➢ Provide high-end Numerical solutions and consultancy services for all marine
services.
➢ NauticalCFD has a team of experts in CFD for the complete solution in a single
contact.
➢ Energy saving device (ESD) with suitable combinations for efficient water flow
along the hull and propeller.
➢ Technical support for marine software development.
➢ Development of customized marine software based on need.
EEDI and EEXI
www.NauticalCFD.com

3. © Bond Marine Consultancy UK
CFD Analysis
for
Ship & Offshore Structure
www.NauticalCFD.com

4. © Bond Marine Consultancy UK
CFD for different Applications and Projects
▪Numerical Wave Tank (Unsteady waves)
▪Slamming, Sloshing and Runup
▪Green Water and Wedge Impact load analysis
▪Analysis of propeller
▪Trim curve generation using CFD
▪Duct performance analysis using CFD
▪Planner motion mechanism (Maneuvering)
www.NauticalCFD.com

5. © Bond Marine Consultancy UK
Energy Saving Solutions (ESS) for ships
1. Hull form optimization
2. Propulsion system optimization +
Energy Saving Devices
3. Trim Optimization
CFD
~ 40 %
~ 15 % ~ 30 %
~ 20 %
www.NauticalCFD.com

6. © Bond Marine Consultancy UK
CFD Software
www.NauticalCFD.com

7. © Bond Marine Consultancy UK
Commercial solver (Potential) used for Resistance Estimation
▪Strip Theory
▪Green Function Method
▪Solvers: Seakeeper, NAPA and SWAN
Hull Resistance
High Speed Hull
Hull-Meshing
NAPA is used for most
Calculations
www.NauticalCFD.com

8. © Bond Marine Consultancy UK
Hull Resistance
CFD solver for Hull Resistance Prediction
www.NauticalCFD.com

9. © Bond Marine Consultancy UK
Seakeeping
Potential Solver for Seakeeping of High Speed Ship
▪Exciting Forces and Motions
www.NauticalCFD.com

10. © Bond Marine Consultancy UK
Seakeeping - Monohull
Potential Solver for Seakeeping
of High Speed Ship
Exciting Forces and Motions

11. © Bond Marine Consultancy UK
Seakeeping - Trimaran
Trimaran Hull Analysis
www.NauticalCFD.com

12. © Bond Marine Consultancy UK
Maneuvering
Commercial Solver is used for Maneuvering Calculations &
If needed CFD can be used for Maneuvering coefficient Estimation
www.NauticalCFD.com

13. © Bond Marine Consultancy UK
Maneuvering
Commercial Solver is used for Maneuvering Calculations &
If needed CFD can be used for Maneuvering
ZIG-ZAG MANEUVER
TURNING CIRCLE
MANEUVER

14. © Bond Marine Consultancy UK
Acoustics
ANSYS Fluent: Aero Acoustic Simulation
The same model can
be extendable for the
ship hull and
Propeller
Reduction of Propeller Noise
www.NauticalCFD.com

15. © Bond Marine Consultancy UK
Hull Form Optimization
www.NauticalCFD.com

16. © Bond Marine Consultancy UK
Hull Form Optimization
Tanker- KVLCC
www.NauticalCFD.com

17. © Bond Marine Consultancy UK
Hull Form Optimization
Blending Factor (-10 to 10)
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18. © Bond Marine Consultancy UK
Hull Form Optimization
0.5
-0.5
Blending
Factor
www.NauticalCFD.com

19. © Bond Marine Consultancy UK
Hull Form Optimization
0.5
-0.5
Blending Factor
0.5 and 1 gives
better Result
Pe Laden %
Pe Ballast %
Avr RW %
Target %
The outcome of the
optimization study was a
design which saves more
than 12.5% energy in the
selected operational
profile.
www.NauticalCFD.com

20. © Bond Marine Consultancy UK
Propulsion System Optimization
www.NauticalCFD.com

21. © Bond Marine Consultancy UK
Propulsion System Optimization
www.NauticalCFD.com

22. © Bond Marine Consultancy UK
Propulsion System Optimization and Energy Saving Devices
✓ Kort nozzle,
✓ Propeller boss fin cap
✓ Stators
✓ Rudder thrust fins
✓ Rudder bulbs
✓ Vortex generators
✓ Semi –circular duct
✓ Mewis duct
✓ Wake equalizing duct
✓ Becker Mewis duct
✓ Fins
✓ Ducting
www.NauticalCFD.com

23. ❖ Additional thrust fins
❖ Low viscous resistance fins
❖ Air lubrication system
❖ Windmills
❖ Rigid or soft sail to utilise wind energy
❖ Solar Energy
Energy Saving Devices / Techniques
www.NauticalCFD.com

24. © Bond Marine Consultancy UK
To Bow?
To Stern? Even Keel?
Mean Draft Speed
Trim
Optimum
Trim
Trim Optimization
www.NauticalCFD.com

25. © Bond Marine Consultancy UK
Relative power changes in %
Trim Optimization
Optimum
Trim
www.NauticalCFD.com

26. © Bond Marine Consultancy UK
CFD
ANALYSIS
Implement the
operational profile
(Draft, Trim and
Speed)
Estimate the required
volume mesh height
at water domain for
each draft
Panel creation for
each draft
Preprocessor Post processor
Prepare trim curve
plot and table
(Relative power
changes in %)
1 Point (STD) 2 Days
200 Point 400 Days
Trim Optimization
Because of cloud
One day
www.NauticalCFD.com

27. © Bond Marine Consultancy UK
Saving Potential 1% ~ 4 %
Trim Optimization

28. © Bond Marine Consultancy UK
CFD Services - Reefer container Hold Analysis using CFD
5 vessels , Holds ducting and bulkhead opening
modified all reefer containers
M. Elangovan., Kumar A., Arora S. (2019),” Duct Optimization and Performance Evaluation Using CFD for the
Reefer Container Hold. Lecture Notes in Civil Engineering, vol 22. Springer, Singapore.
https://doi.org/10.1007/978-981-13-3119-0_24 [Scopus/Book]
www.NauticalCFD.com

29. © Bond Marine Consultancy UK www.NauticalCFD.com

30. © Bond Marine Consultancy UK
T-avg C-01 C-02 C-03 C-04 C-05 C-06 C-07 C-08 C-09 C-10 C-11
R-01 44.1 44.3 50.2 48.8 49.2 47.6 45.6 50.4 50.2 44.3 43.8
R-02 39.9 39.8 42.2 42.7 43.2 40.7 40.0 44.3 42.3 39.4 39.8
R-03 38.6 38.8 41.1 41.3 41.6 38.8 39.9 41.6 41.8 38.6 38.7
R-04 37.8 37.8 41.3 40.3 41.9 39.5 40.6 41.4 42.2 37.7 38.0
R-05 37.5 38.6 39.2 41.5 39.0 39.7 40.7 38.8 37.3
R-06 39.0 39.5 38.1 37.7 37.4
www.NauticalCFD.com

31. © Bond Marine Consultancy UK
CFD Analysis: Propeller
Rotating
Domain
Outer
Domain
Total
Domain
Number of
nodes
106076 22781 128857
Number of
Elements
674323 133061 807384
A B-series propeller
model in open water
www.NauticalCFD.com

32. © Bond Marine Consultancy UK
CFD Analysis: Propeller
Pressure distribution on
Front and back surface at J = 0.5
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33. © Bond Marine Consultancy UK
CFD Analysis: Propeller
Comparison of Thrust and Torque
0.0000
0.0500
0.1000
0.1500
0.2000
0.2500
0.3000
0.3500
0.4000
0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8
Kt
Kt(exp)
10 Kq
10 Kq (exp)
The propeller is operated for a
range of advance coefficients,
J= 0.2 to 0.7 and the
hydrodynamic characteristics
are observed. The thrust and
torque are in close agreement
with the experimental data.
The thrust coefficient (KT)
calculated from simulation is
nearly same as the
experimental KT. Whereas, the
calculated torque coefficient
(KQ) is little lower than the
experimental KQ.
www.NauticalCFD.com

34. © Bond Marine Consultancy UK
CFD Analysis: Fish Farming
Smart Fish-farm
www.NauticalCFD.com

35. © Bond Marine Consultancy UK
CFD Services: Trim Curve Services suing CFD
Draft
[m]
Trim [m] Speed [kn]
7 3 2.5 2 1.5 1 0.5 0 -.5 -1 14 17 20 23
6 3 2.5 2 1.5 1 0.5 0 -.5 -1 14 17 20 23
5 3 2.5 2 1.5 1 0.5 0 -.5 -1 14 17 20 23
I
I
TRIM 13 kn 15 kn 17 kn 19 kn 21 Kn
23 Kn
-1.2 -2.96% -4.02% -2.53% -1.76% -2.02% 0.36%
-0.8 -2.12% -3.20% -2.23% -1.47% -0.53% 0.21%
-0.4 -1.80% -1.57% -1.90% -0.88% -0.51% 0.14%
0.0 0.00% 0.00% 0.00% 0.00% 0.00% 0.00%
0.4 2.94% 0.15% 2.10% 1.99% -0.17% 0.03%
0.8 3.08% 0.31% 2.51% 2.33% 0.31% -0.24%
1.2 3.62% 0.26% 3.16% 2.60% 0.48% -0.50%
1.6 4.02% 0.82% 3.97% 3.92% 0.70% -1.03%
2.0 4.77% 1.62% 4.96% 4.34% 0.86% -1.55%
2.4 5.30% 2.38% 6.26% 5.14% 0.79% -1.28%
2.8 7.74% 6.45% 9.40% 6.10% 1.61% -0.63%
-4.00%
-2.00%
0.00%
2.00%
4.00%
6.00%
8.00%
-1.2 -0.8 -0.4 0 0.4 0.8 1.2 1.6 2 2.4 2.8
Draft 10.5 m
13 Kn 15 Kn 17 Kn 19 Kn 21 Kn 23 Kn
Vessel Name: MV AGELES
www.NauticalCFD.com

36. © Bond Marine Consultancy UK
➢ Optmisation of hull and propulsion system using CFD
➢ Suitable energy saving device combination for ship specific
➢ Provide trim curve services using CFD (Optimum Trim)
➢ Ready to support on Development of Ship Operation Software
➢ CFD is an alternate tool for Marine Experiment Analysis
NauticalCFD can Offer
www.NauticalCFD.com

37. Thank you !
Contact Us
Sales & Business: Ms. Swetha
Email: Shweta@proglobalmarine.com
M: 877 720 4431