The Krylov State Research Centre is equipped with the most powerful supercomputer in Russian shipbuilding with a processing capacity of 56.13 TFlops.

Krylov’s experience gained from numerical simulations for marine engineering applications demonstrates that these techniques make it possible to

• reduce the test scope required for hull shape optimization and thus to save the cost and time of design efforts,
• take well-informed decisions regarding the choice of design solutions,
• improve predictions of full-scale performance,
• raise the efficiency and, therefore, competitiveness of the prospective ship or marine structure under design.

Supercomputer case studies:

• Preliminary optimization of hull lines, i.e. calculations to examine a range of hull shape options for obtaining the best or prescribed hydrodynamic characteristics, followed as a rule by manufacturing of ship model and model tests.
• Calculations of parameters which are impossible to obtain in physical experiment (or when a physical experiment is not practicable).
• Estimation of scale effects, i.e. comparative calculations for correlation of model and full scale conditions.
• Computer simulation fully substituting the physical experiment, a rare case at present, when the accuracy of estimated characteristics is not required to be too high (within 10 to 20 %) to meet the design purposes or when the physical experiment provides the same accuracy.

Key numerical methods:

• Modeling of multi-phase and multi-component flows, including thermodynamic effects;
• Detached eddy simulation (DES) method for resolving of large scale turbulence;
• Adaptive mesh refinement for saving the computational resources and maintaining the high accuracy at the same time;
• Simultaneous fluid-structure interaction (FSI);
• Flow visualization, including 3D video.

Krylov’s Supercomputer Specifications

Total peak efficiency:	56,12 TFLOPS
Total peak efficiency without GPU	44,42 TFLOPS
Total volume of RAM:	9280 Gb
SMP:	4 nodes 256 Gb each & 1 node 2048 Gb
Communication network:	QDR Infiniband
100 nodes – AMD Opteron 6174 200 items (2400 cores)
RAM:	6400 Gb
45 nodes – Intel Xeon E5-2697v2 90 items (1080 cores)
RAM:	2880 Gb DDR3 supports ECC 1600 MHz
Accelerators:	NVIDIA Kepler K20, 10 items
Operational system:	Debian

SOFTWARE:

Developed/Owned by	Description
Foreign software
CD-Adapco	Star-CCM+
Dassault Systemes	SIMULIA/Abaqus
Ansys	Fluent, CFX
Numeca	NUMECA FINE/Marine
Siemens PLM Software	NX
Open-source software (GNU General Public License)
OpenCFD Ltd (ESI Group)	OpenFOAM
In-House Software of Krylov Centre

Glimpse of Future

Background work is under way with a plan to set up an industrial supercomputer centre with a computing cluster of 250 TFlops to address a wider scope of issues at the Krylov Centre.