Experimental and Numerical Study of Oblique Flow Effects on an Open Water SSV Propeller
TECHNICAL PAPER Experimental and Numerical Study of Oblique Flow Effects on an Open Water SSV Propeller A. Sciacca, N. Berthiaume, G. Loubimov, P. M. Miklavcic, T. Gillette, B. G. Knight | 2026 | 36th Symposium on Naval Hydrodynamics Overview This technical paper investigates oblique flow effects on marine propellers using CFD and experimental testing. The […]
Turbomachinery CFD Validation with HELYX: NASA Rotor 67
For engineers in the aerospace and power generation sectors, the NASA Rotor 67 is one of the most widely used benchmarks for turbomachinery CFD validation. First documented in a seminal 1989 NASA technical paper, this low-aspect-ratio, transonic, axial-flow fan rotor is a demanding test case for CFD codes, involving high rotational speeds, complex shock wave […]
ENGYS Releases HELYX® 4.5.1
ENGYS is pleased to announce the release of HELYX version 4.5.1, alongside the corresponding updates to all HELYX add-on modules (HELYX-Adjoint, HELYX-Coupled and HELYX-Marine). HELYX 4.5.1 is a maintenance release focused on bug fixes, stability improvements and code refinements to address known issues identified in previous versions. For more information, existing users should refer to […]
Aerodynamic Optimisation Using Adjoint CFD and Wind Tunnel Testing in Speed Skiing
The “Non-Motorized Skiing Speed World Record” measures the fastest speed reached on alpine skis using only natural forces, namely without any mechanical assistance. In particular, the Speed One (S1) record, which is the best class category, is performed with specific speed skiing equipment. All the periodic events where athletes compete for the world title and […]
CFD for Urban Pollutant Dispersion Validation Using HELYX
Urban pollutant dispersion CFD simulations are increasingly important for understanding air quality in dense urban environments. There is a critical need for accurate urban air quality simulation. Engineers and researchers rely on advanced CFD methodologies to evaluate pedestrian exposure, airflow behaviour, and contaminant transport around buildings. This article marks the first in our new HELYX […]
ENGYS Releases HELYX Version 4.5.0
ENGYS, a global leader in open-source computational fluid dynamics (CFD) solutions, is pleased to announce the release of HELYX version 4.5.0. This new version introduces a new multi-physics workflow, alongside improvements in usability, meshing and post-processing performance. This release also includes updated versions of the HELYX-Coupled, HELYX-Adjoint and HELYX-Marine add-ons, designed to take full advantage […]
ROMVessel: Integrating CFD, FEM and Reduced Order Models for Cryogenic Ship Design
The ROMVessel project has been successfully completed, marking a collaborative effort between MES and ENGYS, with support from the University of Trieste (UNITS) and FAST Computing. The project focused on advancing the design of naval structures for the containment and transport of cryogenic fluids. Its core contribution lies in the integration of FEM, CFD and […]
Automated CFD Tools for the Design of Marine Propulsion Systems
TECHNICAL PAPER Automated CFD Tools for the Design of Marine Propulsion Systems V. Krasilnikov, B. Di Paolo | 2025 | IMAM 2025 Overview This technical paper presents automated CFD simulation tools developed using HELYX and integrated into the propulsor modelling suite AKPA developed by SINTEF Ocean. The work focuses on enabling robust and efficient CFD […]
Interactive Reduced Order Models for Ship Hull Design and Optimization Coupling an Open-Source CFD Tool with Advanced RBF Mesh Morphing
TECHNICAL PAPER Interactive Reduced Order Models for Ship Hull Design and Optimization Coupling an Open-Source CFD Tool with Advanced RBF Mesh Morphing E. Costa, B. Di Paolo, A. Krassas, P. Geremia, C. Groth, M. E. Biancolini, M. Camponeschi, U. Cella, E. Di Meo | 2025 Overview This technical paper presents a proof-of-concept numerical procedure for […]
The Importance of CFD in Modern HVAC Simulation
Introduction Heating Ventilation Air Conditioning (HVAC) systems have an abundance of applications in today’s world. They keep astronauts alive in space [1], prevent infection in operating rooms by maintaining 25 air changes per hour [2] and preserve artworks in museums by stabilising conditions to 20degC (68degF) and 50% relative humidity all year round [3]. As […]