Lars Larsson

Numerical Ship Hydrodynamics: an Assessment of the Gothenburg 2010 Workshop Lars Larsson

Jacket Description/Back: This book assesses the state-of-the-art in computational fluid dynamics (CFD) applied to ship hydrodynamics and provides guidelines for the future developments in the field based on the Gothenburg 2010 Workshop. It presents ship hull test cases, experimental data and submitted computational methods, conditions, grids and results. Analysis is made of errors for global (resistance, sinkage and trim and self-propulsion) and local flow (wave elevations and mean velocities and turbulence) variables, including standard deviations for global variables and propeller modeling for self-propulsion. The effects of grid size and turbulence models are evaluated for both global and local flow variables. Detailed analysis is made of turbulence modeling capabilities for capturing local flow physics. Errors are also analyzed for head-wave seakeeping and forward speed diffraction, and calm-water forward speed-roll decay. Resistance submissions are used to evaluate the error and uncertainty by means of a systematic verification and validation (V&V) study along with statistical investigations. Post-workshop experimental and computational studies are conducted and analyzed for evaluation of facility biases and to draw more concrete conclusions regarding the most reliable turbulence model, appropriate numerical methods and grid resolution requirements, respectively."Table of Contents:1 Introduction, Conclusions and Recommendations; "Lars Larsson, Michel Visonneau, Frederick Stern"" "2 Evaluation of Resistance, Sinkage and Trim, Self-Propulsion and Wave Pattern Predictions; "Lars Larsson, Lu Zou "3 Evaluation of Local Flow Predictions; "Michel Visonneau "4 Evaluation of Seakeeping Predictions; "Fred Stern et al. "5 A Verification and Validation Study Based on Resistance; "Lu Zou, Lars Larsson "6 Additional Data for Resistance, Sinkage and Trim; "Lu Zou, Lars Larsson "7 Post Workshop Computations and Analysis for KVLCC2 and 5415; "Shanti Bhushan et al. "Publisher Marketing: This book assesses the state-of-the-art in computational fluid dynamics (CFD) applied to ship hydrodynamics and provides guidelines for the future developments in the field based on the Gothenburg 2010 Workshop. It presents ship hull test cases, experimental data and submitted computational methods, conditions, grids and results. Analysis is made of errors for global (resistance, sinkage and trim and self-propulsion) and local flow (wave elevations and mean velocities and turbulence) variables, including standard deviations for global variables and propeller modeling for self-propulsion. The effects of grid size and turbulence models are evaluated for both global and local flow variables. Detailed analysis is made of turbulence modeling capabilities for capturing local flow physics. Errors are also analyzed for head-wave seakeeping and forward speed diffraction, and calm-water forward speed-roll decay.

Contributor Bio:  Larsson, Lars Lars Larsson, a naval architect, is Professor of Hydrodynamics at Chalmers University of Technology in Gothenburg, Sweden. He is also president of Flowtech International and was for 18 years a scientist at SSPA Maritime Consulting. He has written 100 papers on computational fluid dynamics and has taught both academic and public courses on yacht design. A lifelong sailor, he has been a consultant to the Swedish Olympic Sailing Team and three America s Cup teams.