Motion, vibration, acoustics. The physics that makes or breaks a hull, solved.
NVS (NVSolve) is Turnavi's simulation platform for how a structure moves on the water, vibrates, and radiates noise beneath it. Ships, offshore platforms, subsea systems. Not one fixed code, but a family of solvers you compose to the case at hand. The classical ones run in production today; the isogeometric core is on the way.
A different deal entirely.
Leaning on a foreign tool means a sealed box, a heavy bill, and a core you can never touch. NVS is a different relationship: the core is ours, it extends fast to your problem, and it fits the way your field works. The cost and the pace look nothing alike.
Design without the license tax
Run a comparable analysis for a fraction of what a commercial seat costs. Stop rationing your design cases by license. The variants you would otherwise skip are back on the table.
The real speedup is in the workflow
The real gain is not raw solve time. NVS is built from the core on modular, solid architectural principles: a new module slots in without shaking the whole, a glitch does not sit unfixed for months, and the workflow runs in the language of the field. Not an interface you drown under while it tries to do everything, but a clean one that fits the work. OpenMP and a higher-order scheme add speed on top of that.
Solves where most codes approximate
Quadratic, higher-order boundary elements capture the hydrodynamics that constant- and linear-panel codes can only approximate. Sharper physics, fewer fudge factors.
Leaves your FEM where it is
Bring structural data straight from the FEM tools you already run. The workflow stays, the investment stays. For rigid-body seakeeping, you need no external solver at all.
Two solver families. The surface and what lies beneath.
Two classical finite- and boundary-element solvers, both in production today: one for how a hull moves and flexes on the water, one for how it vibrates and the noise it radiates below.
Seakeeping & hydroelasticity
Response amplitude operators, motion prediction in regular and irregular waves, added mass and damping, and free-surface hydroelasticity through the Fourier–Kochin theory, including springing and whipping. Wave-induced forces come with probabilistic, extreme-value analysis for realistic sea states.
Vibration & vibroacoustics
Modal, frequency-response and transient analysis; propeller- and machinery-induced vibration; and acoustic-signature prediction for submerged structures, down to shallow-water propagation. Fluid and structure are coupled throughout.
Not just a tool. A partner, and a roadmap.
NVS is software and a solution partner at once: bespoke development you can put to work today, and a unified isogeometric core taking shape for tomorrow.
Custom solver development
When a problem falls outside what a standard tool was built for, NVS extends to meet it. Our research background lets us add a solver or a module straight onto the platform, the way the torsional-vibration module came together for a defense-industry project. The platform takes on the new physics, so you stay in one environment instead of stitching tools together.
Isogeometric & CAD-native simulation
Our isogeometric core, UIHES, fuses fluid and structure in a single formulation. No external FEM, no precision traded away in meshing. The goal is bold and simple: run the analysis right on your CAD geometry, without leaving the design environment you already work in. iHEST and iVAST are in active development, as a research preview.
One core. A warship, a wind float, a research question.
Defense
Where acoustic stealth decides a program, NVS predicts the vibration and the acoustic signature that betray a submerged hull. A domestic core means no foreign black box stands between you and a classified result, and the method stays in domestic hands on sensitive work.
Ship & offshore
For a design office, NVS turns a hull or a platform into RAOs, wave-induced loads and hydroelastic response, and from there into the fatigue and ultimate-strength margins a classification review will ask for. One model carries the whole chain, from early motion prediction to the structural case for approval.
Academia
For a research group, a closed code is a dead end: you can cite its results but never check the method behind them. NVS rests on different ground. Our methods are written out in peer-reviewed work, open to read and build on, the way our own isogeometric research grows from them. Take a method further, benchmark a new one against it, or work the formulation through with us.
Methods you can check. Work that already shipped.
Academic foundation
NVS grew out of doctoral research at Istanbul Technical University's Faculty of Naval Architecture and Ocean Engineering, carried by peer-reviewed work in the field's leading journals and research projects supported by TÜBİTAK. The methods were settled in the literature long before they shipped in software.
Selected work
- Dynamic longitudinal-strength assessment for an IACS-member classification society. Three hull forms, probabilistic approach.
- Structural strength, fatigue and motion analysis for a floating solar-energy platform.
- Torsional-vibration analysis for a defense-industry project.
Go deeper on nvsolve.turnavi.com
This page is the overview. For the full breakdown of the solver families, the modules and the analyses they run, head over to nvsolve.turnavi.com. Cloud computation is on its way; for now, a preview waits there.
Open the platformBring us the case that broke your last tool.
See the demo on a case of yours, scope a custom solver for the part NVS does not cover yet, or get a second read on a hard hydroelastic or vibroacoustic problem. Send us the case and we will show you exactly where NVS lands.