تم الحل ✓
categoryهندسة ميكانيكية
schoolبكالوريوس
event_available2026-07-13
السؤال
Transcribed Image Text:
Consider the integral boundary layer equations for momentum and energy below:
dx
pu(U. -u)dy-dd pudy +
=
dT
dx dx 0
эт
Ju(T. -T) dy = Judy + a(37)
dx
مرا
For flow over a flat plate, assume the boundary layer velocity and temperature profiles are
LINEAR, as shown below:
u(y) y
U δ
-=
T(y)-T y
T-T δε
For these velocity and temperature profiles, assuming that 8, <8 (i.e. Pr >1), use the
procedure for solution of the integral boundary layer equations demonstrated in class to
determine an equation for:
a) The variation of the velocity boundary layer thickness along the plate, δ
τ
b) The variation of the friction coefficient along the plate, C.- 1/2pU
x
c) For the parts above, compare your answers to the results shown in Table 2.1. Also,
determine a and az using Eqn. 2.56' and 2.57' and compare to the constants
determined in parts a and b.
d) The relationship of the temperature boundary layer thickness as a function of the
velocity boundary layer thickness, &
δ
e) The variation of the Nusselt number along the plate, Nu
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