A lift distribution based section design method has been proposed. Through Newton-Raphson iterations,
the section geometry is efficiently designed to meet the requirements for total lift and lift distribution. The
effect of fluid viscosity on total lift is taken into account by coupling Reynolds-averaged Navier-Stokes (RANS)
simulation with the potential-flow based design procedure. The present method avoids the difficulty of assigning
velocity or pressure distributions on section surfaces. As the loading and thickness distributions are expressed in
parametric forms, it is easy to ensure that the designed geometry is continuous and smooth. The effects of lift and
thickness distributions on cavitation bucket are numerically investigated. A shift of lift loading towards the aft
part of section tends to decrease the margin of back cavitation, while the width of cavitation bucket can be kept
almost unchanged. To have a wider cavitation bucket, one can increase the leading edge radius, move properly the
location of maximum thickness towards the leading edge, or decrease the curvature at the location of maximum
thickness.
RAO Zhiqiang (饶志强)
,
YANG Chenjun* (杨晨俊)
. Lift Distribution Based Design of Two-Dimensional Sections[J]. Journal of Shanghai Jiaotong University(Science), 2017
, 22(3)
: 265
-273
.
DOI: 10.1007/s12204-017-1831-7
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