A Method for Examination of Store Separation From Aircraft Through Dynamic Model Testing at Full-Scale Mach Number

1957 ◽  
Vol 24 (4) ◽  
pp. 275-280
Author(s):  
SEYMOUR J. DEITCHMAN
Keyword(s):  
Mach Number ◽  
Dynamic Model ◽  
Model Testing ◽  
Full Scale ◽  
Store Separation

Full-scale physical model testing of levee overtopping

2020 ◽  
pp. 38-60
Author(s):  
Lin Li ◽  
Farshad Amini ◽  
Yi Pan ◽  
Saiyu Yuan ◽  
Bora Cetin
Keyword(s):  
Physical Model ◽  
Model Testing ◽  
Full Scale

Impact of Air Flow Rate and Frequency of Influent Data on Full-Scale Dynamic Model Calibration

2010 ◽  
Vol 2010 (9) ◽  
pp. 7203-7225
Author(s):  
I. Nopens ◽  
S. Plano ◽  
K. Cierkens ◽  
L. Benedetti ◽  
A. van Nieuwenhuijzen ◽  
...  
Keyword(s):  
Dynamic Model ◽  
Flow Rate ◽  
Model Calibration ◽  
Air Flow ◽  
Full Scale ◽  
Air Flow Rate

Methodology for Wind/Wave Basin Testing of Floating Offshore Wind Turbines

2012 ◽  
Author(s):  
Heather R. Martin ◽  
Richard W. Kimball ◽  
Anthony M. Viselli ◽  
Andrew J. Goupee
Keyword(s):  
Wind Turbine ◽  
Wind Turbines ◽  
Model Testing ◽  
Full Scale ◽  
Scale Model ◽  
Horizontal Axis Wind Turbine ◽  
Wind Turbine Aerodynamics ◽  
Floating Wind Turbine ◽  
Floating Offshore Wind Turbines ◽  
Wave Basin

Scale model wave basin testing is often employed in the development and validation of large scale offshore vessels and structures by the oil and gas, military and marine industries. A basin model test requires less time, resources and risk than a full scale test while providing real and accurate data for model validation. As the development of floating wind turbine technology progresses in order to capture the vast deepwater wind energy resource, it is clear that model testing will be essential for the economical and efficient advancement of this technology. However, the scale model testing of floating wind turbines requires one to accurately simulate the wind and wave environments, structural flexibility and wind turbine aerodynamics, and thus requires a comprehensive scaling methodology. This paper presents a unified methodology for Froude scale testing of floating wind turbines under combined wind and wave loading. First, an overview of the scaling relationships employed for the environment, floater and wind turbine are presented. Afterward, a discussion is presented concerning suggested methods for manufacturing a high-quality, low turbulence Froude scale wind environment in a wave basin to facilitate simultaneous application of wind and waves to the model. Subsequently, the difficulties of scaling the highly Reynolds number-dependent wind turbine aerodynamics is presented in addition to methods for tailoring the turbine and wind characteristics to best emulate the full scale condition. Lastly, the scaling methodology is demonstrated using results from 1/50th scale floating wind turbine testing performed at MARIN’s (Maritime Research Institute Netherlands) Offshore Basin which tested the 126 m rotor diameter NREL (National Renewable Energy Lab) horizontal axis wind turbine atop three floating platforms: a tension-leg platform, a spar-buoy and a semi-submersible. The results demonstrate the methodology’s ability to adequately simulate full scale global response of floating wind turbine systems.

A Steering Nozzle for a Great Lakes Bulk Carrier

1977 ◽  
Vol 14 (01) ◽  
pp. 1-18
Author(s):  
R. C. Johnston
Keyword(s):  
Great Lakes ◽  
Model Testing ◽  
Full Scale ◽  
Bulk Carrier ◽  
The World

This paper describes some of the model testing and full-scale results arising from the decision to fit a Kort steering nozzle to the Great Lakes bulk carrier MV Ralph Misener. Because the nozzle was the largest in the world at the time, and has been relatively trouble-free for eight years, the results are of interest. The enhanced maneuverability of the vessel is important in the confined channels and locks of the St. Lawrence Seaway System and is sufficient justification for fitting a Kort steering nozzle.

Lessons Learned from Full-Scale Seakeeping Trial Acceleration Data for HighSpeed Planing Craft and Implications for Scale Model Testing

2017 ◽  
Author(s):  
Michael R. Riley ◽  
Timothy Coats
Keyword(s):  
High Speed ◽  
Impact Load ◽  
Maximum Load ◽  
Model Testing ◽  
Full Scale ◽  
Lessons Learned ◽  
Scale Model ◽  
Wave Impact ◽  
Acceleration Data ◽  
Hull Structure

This paper summarizes lessons learned from analyzing acceleration data recorded during full-scale seakeeping trials of high speed craft. Applications using a consistent maximum wave impact load approach in different areas of interest, including hull structure, shock isolation seat evaluation, and equipment ruggedness criteria are presented. The lessons learned and the maximum load applications suggest that there are implications for scale model testing and computational fluid dynamics.

Investigations of Influential Factors on the Aerodynamic Performance of a Steam Turbine Exhaust System

2010 ◽  
Author(s):  
Jing-Lun Fu ◽  
Jian-Jun Liu
Keyword(s):  
Reynolds Number ◽  
Mach Number ◽  
Exhaust System ◽  
Aerodynamic Performance ◽  
Full Scale ◽  
Small Scale ◽  
Flow Angle ◽  
Fluid Properties ◽  
Turbine Exhaust ◽  
Exhaust Systems

The purpose of this paper is to investigate the influences of different parameters on the three-dimensional flow fields in the low-pressure steam turbine exhaust hood of a typical power station. The complex flows in both small-scale and full-scale turbine exhaust systems under different inlet flow conditions were simulated. The effects of inlet Reynolds number, inlet Mach number and fluid properties on the aerodynamic performance and flow fields in the exhaust systems were analyzed. The influential rules of inlet tangential flow angle distributions in the radial direction for a low speed small-scale model and a full speed full-scale exhaust system were summarized and compared. It is found that the inlet tangential flow angle at different radial position has different effects on the aerodynamic performance for both small-scale and full-scale exhaust systems. The influences of inlet Reynolds number on the aerodynamic performance depend on the inflow swirl conditions. The changing of inlet Mach number leads to the flow pattern variations in the exhaust system. The influences of fluid properties on the exhaust system performance are small.

Sign in / Sign up

Export Citation Format

Share Document