A Detailed Assessment of Numerical Flow Analysis (NFA) to Predict the Hydrodynamics of a Deep-V Planing Hull

TL;DR

This paper evaluates the effectiveness of Numerical Flow Analysis (NFA), a CFD tool, in predicting the hydrodynamics and free-surface flow around a deep-V planing hull at high Froude numbers.

Contribution

It provides a detailed assessment of NFA's capabilities in modeling complex multiphase flows and hydrodynamic forces for deep-V planing hulls, highlighting its accuracy and features.

Findings

NFA accurately predicts hydrodynamic forces and moments.

NFA effectively models breaking waves and spray formation.

NFA demonstrates capability in simulating air entrainment and free-surface flows.

Abstract

Over the past few years much progress has been made in Computational Fluid Dynamics (CFD) in its ability to accurately simulate the hydrodynamics associated with a deep-V monohull planing craft. This work has focused on not only predicting the hydrodynamic forces and moments, but also the complex multiphase free-surface flow field generated by a deep-V monohull planing boat at high Froude numbers. One of these state of the art CFD codes is Numerical Flow Analysis (NFA). NFA provides turnkey capabilities to model breaking waves around a ship, including both plunging and spilling breaking waves, the formation of spray, and the entrainment of air. NFA uses a Cartesian-grid formulation with immersed body and volume-of-fluid methods.