{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

f18_ps14_fall03

# f18_ps14_fall03 - Fall 2003 Uniﬁed Engineering Fluids...

This preview shows page 1. Sign up to view the full content.

This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Fall 2003 Uniﬁed Engineering Fluids Problem F18 � F18. Wind with velocity V� is ﬂowing over a mountain ridge have the shape Y (x) = Cx. The ﬂow is to b e modeled by superimposing a uniform ﬂow with a source located at some location x, y = (d, 0). �� � (x, y ) = V� y + ln (x − d)2 + y 2 4κ y r V � � x d a) Determine b oth the source’s location d, and the strength �, with the conditions: u=0 at x, y = (0, 0) � v /u = d Y /dx at x, y = (d, Cd) The second condition simply requires that the ﬂow direction on the ridge surface directly above the source is parallel to the ridge surface. b) A sailplane ﬂying in the slope lift upwind of the ridge requires a vertical velocity of at least v � 1m/s to stay aloft. For a wind speed of V� = 15m/s (33 mph) and ridge size scale C = 500m, determine the maximum ﬂyable radius r (λ ) inside which the sailplane can sustain ﬂight. Plot the r (λ ) b oundary superimposed on a plot of the ridge. ...
View Full Document

{[ snackBarMessage ]}

Ask a homework question - tutors are online