«SURFACE FRICTION DRAG» 관련 영어 책
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1
Aerodynamics for Engineering Students
Skin-Friction Drag (or Surface-Friction Drag) Skin-friction drag is generated by
the resolved components of the traction due to shear stresses acting on the body
surface. This traction is due directly to viscosity and acts tangentially at all points
...
E. L. Houghton, P. W. Carpenter, Steven Collicott, 2012
2
Handbook of Sports Medicine and Science, Swimming
... Cf (EpV A) (5.10) where Cf : O.O74/(Re)_1/5, A is the wetted area of the surface
, and Reynolds number (Re) is based upon the length of the surface. Friction
drag coefficients for both laminar and turbulent boundary layers are plotted in Fig.
Joel M. Stager, David A. Tanner, 2008
1991). There are two kinds of aerodynamic drag: surface friction drag and
pressure drag. Friction drag is caused by a viscous shear in the thin layer of air
moving parallel to a surface. A rough surface traps more air mass and increases
friction.
4
Principles of Flight for Pilots
Surface-friction drag is that portion of parasite drag caused by a boundary layer
of almost static air that adheres to the skin of the aeroplane. The boundary layer
is defined as that part of the airflow in which the airspeed is less than 99% of the
...
5
Design of Marine Facilities for the Berthing, Mooring, and ...
The ballast condition and the vessel trim also significantly affect the yaw moment
and lateral force. Longitudinal current forces are the result of both form (pressure)
drag and surface friction drag. Propeller drag often is added separately to the ...
6
Performance and Stability of Aircraft
large and the resulting 'surface friction drag' is significant. All other forms of drag
appear as a result of normal pressure effects, the 'nonnal pressure drags'. The
normal pressure drag of a two-dimensional aerofoil in inviscid, incompressible ...
7
Wind Loads for Petrochemical and Other Industrial Facilities
Friction drag is caused by the shear stresses parallel to the surface of a body that
develop as a fluid passes over the body's surface. Friction drag has more
importance for “streamlined” shapes, such as airplane wings, which do not
produce ...
American Society of Civil Engineers. Task Committee on Wind Induced Forces, 2011
8
Fundamentals of Fluid Mechanics , Second Edition
... velocity of U. If we consider a small area dA on the surface, then forces acting
on this area are (1) pressure force P×dA acting in the direction perpendicular to
the surface and (2) shear force t×dA acting along the surface. Friction Drag. This
is ...
9
Advanced Vehicle Technology
Hence the relative air velocity further out from the surface rises progressively
between air layers until it attains the unrestricted main airstream speed. 14.1.2
Skin friction (surface friction drag) (Fig. 14.3) This is the restraining force
preventing a ...
10
Aeronautical Engineer's Data Book
Total drag is subdivided into pressure drag and surface friction drag. Pressure
drag Force arising from resolved components of normal pressure. Pressure drag
is subdivided into boundary layer pressure or form drag, vortex or induced drag, ...
