considered to have a roof element that can conveniently be regarded
as a smooth flat plate. The dimensions given are 2 m long in the
streamwise direction and 1m in width. This is placed in a wind
tunnel in the streamwise direction. The following data are
available to you: p = 101.325 kPa, T = 15.16°C, gas constant R =
286.97 m2 /(s2 K), μ =1.79x10–5 Pa.s, and wind tunnel air velocity
of 30 m/s.
i. Calculate the transition point based on the plate’s
streamwise direction. State your assumptions.
ii. At the transition point, calculate the following boundary
layer properties: δ, δ*, θ, cf. Also calculate the total drag force
from the leading edge to the transition point.
iii. If the transition takes place at the leading edge,
calculate the values of δ, δ*, θ, cf. Also calculate the total drag
force.
iv. Give reasons why the figures in ii. above differ from
iii.
- The Roof Of A Particular Scale Model Of An Automobile Is Considered To Have A Roof Element That Can Conveniently Be Rega 1 (36.01 KiB) Viewed 14 times
(Re) 92 - ; (Re)C2 0.072 0.2 (Re, 92 C, (Re)C-2 o is boundary layer thickness: is boundary layer displacement thickness; e is boundary layer momentum thickness; Cris local skin friction coefficient; CF is skin friction coefficient over distance L from leading edge.