Excercises Formulas Flashcards
What is the formula for AR?
AR = (b^2)/s_{ref}
What is the formula for the taper ratio lambda?
Lambda = c_t / c_r
What is the formula for y+
y+ = (y_p * \rho * u_tau) / (\micro)
where u_tau is the friction velocity with the formula
u_tau = \sqrt((tau_w)/(\rho))
What are residuals?
The difference between left and right hand side of the equation
What is the formula for dissipation rate?
E = v (u/n)^2
What is the formula for smallest eddy length?
n = ((v^3)/E)^(1/4)
What is the formula velocity of smallest eddy?
u_n = (Ev)^1/4
What is the timescale for smallest eddy?
tau_n = (v/E)^(1/2)
What is the formula for Reynolds Number?
Re = rho U {l/micro}
What is the formula for Skin friction coefficient?
c_f = (2log_10(Re) - 0.65)^{-2.3}
What is the formula for Wall sheer stress?
tau_w = 1/2 rho U^2 c_f
What is the formula for Friction velocity?
u_tau = sqrt(tau_w / rho)
What is the formula for y_p?
y_p = (y+ micro)/(rho u_tau)
What is the formula for first layer height?
y_h = 2y_p
What is the formula for delta_99?
delta_99 = y_T = y_H (1-r^N)/(1-r)
r = 1.18
