Search engine for discovering works of Art, research articles, and books related to Art and Culture
Javascript must be enabled to continue!
Log Boom Drag Measurement at Sea
View through CrossRef
Measurements of the drag on a typical (52-section) log boom were made under calm conditions at sea. The drag coefficient based on planform area is essentially independent of Reynolds number over typical operating conditions, cD = 0.0083 + 0.0006. Engineering calculations suggest that the log boom drag is caused primarily by skin friction drag and that wake drag is slightly less important; wave drag is entirely insignificant. A small-scale (4-section) log boom was constructed to test the influence of log arrangement within the boom on boom drag. Neither aligning the front row of bundles transversely nor covering boom sections with an underwater shroud had a significant impact on the boom drag.
The Society of Naval Architects and Marine Engineers
Title: Log Boom Drag Measurement at Sea
Description:
Measurements of the drag on a typical (52-section) log boom were made under calm conditions at sea.
The drag coefficient based on planform area is essentially independent of Reynolds number over typical operating conditions, cD = 0.
0083 + 0.
0006.
Engineering calculations suggest that the log boom drag is caused primarily by skin friction drag and that wake drag is slightly less important; wave drag is entirely insignificant.
A small-scale (4-section) log boom was constructed to test the influence of log arrangement within the boom on boom drag.
Neither aligning the front row of bundles transversely nor covering boom sections with an underwater shroud had a significant impact on the boom drag.
Related Results
Form drag on pressure ridges and drag coefficient in the northwestern Weddell Sea, Antarctica, in winter
Form drag on pressure ridges and drag coefficient in the northwestern Weddell Sea, Antarctica, in winter
AbstractSurface elevation data for sea ice in the northwesternty - Weddell Sea, Antarctica, collected by a helicopter-borne laser altimeter during the Winter Weddell Outflow Study ...
Study on Drag Reduction Performance of Antifouling Ribbed Surfaces
Study on Drag Reduction Performance of Antifouling Ribbed Surfaces
Drag reduction by ribbed surfaces is a potentially effective strategy for reducing the energy consumption of ships. However, complicated by possible marine biofouling, it is meanin...
Review of Active and Passive Devices for Drag Reduction
Review of Active and Passive Devices for Drag Reduction
Base drag accounts for up to 40% of the total aerodynamic drag experienced by aerodynamic bodies like projectiles, missiles, and rockets, significantly reducing their range and aer...
On three types of sea breeze in Qingdao of East China: an observational analysis
On three types of sea breeze in Qingdao of East China: an observational analysis
Our knowledge of sea breeze remains poor in the coastal area of East China, due largely to the high terrain heterogeneity. Five–year (2016–2020) consecutive wind observations from ...
An analysis of drag force and moment for upright porous wind fences
An analysis of drag force and moment for upright porous wind fences
Upright porous wind fences have been studied extensively because of their wide use. This paper analyzes the drag force and moment of fences to provide corroborating evidence for de...
The immediate effect of spinal manipulative therapy on drag flicking performance of field hockey players
The immediate effect of spinal manipulative therapy on drag flicking performance of field hockey players
Background In sport, competitive athletes are required to perform to the best of their ability, with some athletes seeking the use of chiropractic treatment to improve performance....
Vascular Caliber
Vascular Caliber
Many aspects of vascular caliber can be accounted for on the basis of interactions between the frictional drag generated by the stream, and the sensitivity of the endothelial cells...
Undergraduate Research on Trailer-Truck Aerodynamic Drag
Undergraduate Research on Trailer-Truck Aerodynamic Drag
The transportation industry is heavily dependent on ‘big rigs’ or semitrailers. Since its introduction during 1920s semitrailers have revolutionized the industry. However their geo...