Fluidtechno.Co.,Ltd. Simulation of flow on ship hull (CFD)

CFD Simulation

 

Analytical Tools

Solver

  • SCRYU/Tetra
    Software Cradle Co., Ltd.
    Thermo-fluid simulation software using hybrid mesh to represent the surface shape with high accuracy
  •  

  • Simcenter STAR-CCM+™
    Siemens Digital Industries Software

Optimization software

  • Simcenter HEEDS™
    Siemens Digital Industries Software

 

Analytical System

  • 272Core
  • HPC cluster system and parallel computation
  • Infiniband switch for faster analysis
  • Implemented a job scheduler to enable efficient calculation scheduling
Optimization of Hull Form
and Energy-Saving Devices
Reducing fuel consumption
of existing ships
Development of Hull Form
and Energy-Saving Devices
Hull form optimaization
Design of energy-saving devices
Solutions for
Ships in Service
Hull vibration
Smoke damage
Suggestion of solution
Correlation between
EFD and CFD
Ensuring reliability of correlation of CFD by use of extensive archives of tank test results

 

Design Process Prior to Tank Test

 

Standard
performance
prediction
    • Utilizing database of tank test result archives
    • Implementation of tank test

The standard process includes high risk of retesting which causes
increase of cost and delay of full scale ship construction.

CFD
Utilization
  • Ship hull form is evaluated immediately after the detrmination of the form

Risk of re-testing is lower. Newbuilding with a optimal
hull form is enable reducing costs

Prospects
  • Automatic hull form optimization

 

 

What is CFD?・・・

Abbreviation for High Performance Computing.
The use of a large, high-performance computer system to perform a process that requires a huge number of calculations.

 

What is HPC?・・・

Abbreviation for High Performance Computing.
The use of a large, high-performance computer system to perform a process that requires a huge number of calculations.
Also, the field of research on the theory and technology for constructing and operating such systems.

(Reference;  “IT Dictionary”)

 

What is cluster system?・・・

A system in which multiple computers are connected behave as if they were a single
computer to users and other computers. The construction of such a system is called “clustering”.

(Reference;  “IT Dictionary”)

 

Projects of CFD analysis

Our CFD analysis is applicable to wide-ranging cases in order to provide solutions and ship performance evaluation.
Please feel free to Contact us for inquiry.

 

 

【Wave Pattern Comparison between EFD and CFD (Optimization on bow)】


Original

Optimized

Fn=0.18(13.7kt)

 

 

【Wake Pattern Comparison between EFD and CFD 】

EFD and iFTC CFD have similar wake distribution

 

 

 

 

【Observation of Wave Profile in Contour】


Before optimization

After optimization

 

 

【Observation of Streamline on Hull and Rudder】


 

 

【Comparison of Pressure Distribution with and without
propeller rotation】

 

 

【Analysis of Ship Motion in Waves】


 

 

【Optimization of Eco-Stator】

 


 

 

【Flow Field Comparison between Different Bulb Sizes】

 

 

【Analysis of Ship in Oblique Towing Motion】

 

 

【Observation of Bubble Flow Field inside a Sea Chest】

 

 

【Analysis of Ship Motion in Waves】