TY - JOUR
T1 - Drag on flat plates of arbitrary porosity
AU - Steiros, K.
AU - Hultmark, Marcus Nils
N1 - Funding Information:
We are grateful to Melissa Fan, for her help with the measurements. This research was funded by the National Science Foundation grant CBET-1652583 (Program Manager R. Joslin).
Publisher Copyright:
© 2018 Cambridge University Press.
PY - 2018/10/25
Y1 - 2018/10/25
N2 - A new model for the drag force on a two-dimensional flat plate of arbitrary porosity, oriented normal to the free stream, is introduced. The model is an extension of that introduced by Koo & James (J. Fluid Mech., vol. 60(3), 1973, pp. 513-538), where the performance at low porosities is improved by including a base-suction term. The additional drag due to the base suction is calculated implicitly using momentum theory, which makes the model self-contained. The model predictions exhibit convincing agreement with experimental observations over a wide range of porosities, including the solid case, as long as shedding is absent or suppressed.
AB - A new model for the drag force on a two-dimensional flat plate of arbitrary porosity, oriented normal to the free stream, is introduced. The model is an extension of that introduced by Koo & James (J. Fluid Mech., vol. 60(3), 1973, pp. 513-538), where the performance at low porosities is improved by including a base-suction term. The additional drag due to the base suction is calculated implicitly using momentum theory, which makes the model self-contained. The model predictions exhibit convincing agreement with experimental observations over a wide range of porosities, including the solid case, as long as shedding is absent or suppressed.
KW - Wakes
KW - low-dimensional models
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U2 - 10.1017/jfm.2018.621
DO - 10.1017/jfm.2018.621
M3 - Article
AN - SCOPUS:85052800338
SN - 0022-1120
VL - 853
SP - 853R31-853R311
JO - Journal of Fluid Mechanics
JF - Journal of Fluid Mechanics
ER -