On September 1st 2015, Professor Royce and Professor Onas attended the Office of Naval Research (ONR) Review meeting at Naval Surface Warfare Center Carderock Division (NSWC-CD), which houses the U.S. Navy’s world renowned David Taylor Model Basin (DTMB).
The meeting was attended by several members of the Center for Innovation in Ship Design (CISD at NSWC-CD) and a number of participants from academia and the industry including Webb Institute, MIT, University of Michigan, University of Rhode Island, George Mason University, Oregon State University, and Navatek, Ltd. Most of the presented work was in the area of Ship Hydrodynamics. Prof. Royce and Prof. Onas presented research work carried-out in the Webb Institute Robinson Model Basin on the behavior of transom flows in partially ventilated regimes. The transom flow research is part of a collaborative effort between Navatek, Ltd. and Webb Institute under ONR sponsorship to formulate an improved transom stern boundary condition for robust and more accurate CFD prediction capability. In the transition region the transom flow is unsteady and its characteristics depend on running wave elevations and details of the transom stern geometry (such as buttocks lines and section shape). Webb Institute’s contribution is to provide the wave elevations in the transition region in both steady and unsteady conditions.
Following the ONR Meeting, Professor Royce and Professor Onas travelled to Washington, D.C. where they were joined by Professor Emeritus Jacques Hadler and attended the 13th International Conference on Fast Sea Transportation (FAST 2015). The conference was held on September 1-4, 2015 at the FHI 360 Conference Center in Du Point Circle in the nation’s capital. Professor Royce presented “Transom Flow Elevations in Partially Ventilated Condition” (Royce and Doherty) and Professor Onas presented “Seakeeping Analysis of a SWATH-type Trimaran Using Potential Flow” (Onas, Falls’95, and Stojanovic). Professor Royce also co-authored “Hull Form Optimization of a Tri-SWACH for Reduced Drag” (Huang, Wang, Yang, and Royce) and Professor Onas co-authored “Experimental Investigation of Roll and Heave Motions of Tri-SWACH ships” (Stojanovic, Muk-Pavic, Bucknall, Falls’95, Onas, and Datla). The conference presented an excellent opportunity to network with an international mix of professionals from the marine industry.
Photo courtesy of SNAME