ADG Engineering, LLC



Fluent Model Test Waveres

Introduction

During the development of the most optimum hull lines, hydrodynamic research is a key component to ensure optimum performance towards the original design specifications. ADG Engineering's Naval Architects use a combination of labratory experimentation with hull shapes, sea trials, and computer-aided prediction methods to design hull lines. While the main focus is to develop the most efficient set of hull lines, appendage design with respect to power, maneuverability and sea keeping characteristics are also critical during this process.

Computation Fluid Dynamics (CFD) Studies

As computing power becomes available with the trends of technology, State-of-the-art CFD is being used to achieve to most optimized hull form in shorter periods of time. As a result of the CFD codes now available, the hull lines are pre-optimized before any ship model is manufactured and tested, thus reducing the number of model modifications. CFD codes can predict actual wave patterns, underwater flow lines and pressure distribution on the underwater body of the hull. As a result, wave resistance is significantly reduced improving on vessel speed and fuel consumption.

Calm Water Tests

ADG Engineering can aid in the management of obtaining a scale model to obtain resistance data during the calm water test. These miniature models of actual hulls, will be towed and propelled through long basins at various speeds while obtaining the relevant data of interest. Typical data collection obtained is hull resistance, added appendage resistance, bow wave patterns, flow patterns, and propeller-induced noise and vibration.

Sea Keeping Tests

Seakeeping predictions by way of numerical software tools are limited in accuracy which makes tests with scale models indispensable in many assessments. During model testing, the following concepts can be studied to obatin optimum hull form results: Comfort of motor yachts, ferries and cruise ships, motion control by means of conventional fins, zero-speed fin stabilizers, added resistance and speed loss, parametric roll, sloshing, wave loading, and slamming impacts.