Potential flow in engine valves Page: 6 of 29
This report is part of the collection entitled: National Advisory Committee for Aeronautics Collection and was provided to Digital Library by the UNT Libraries Government Documents Department.
The following text was automatically extracted from the image on this page using optical character recognition software:
N.A.C.A. Technical Memorandum No. 343 5
w' = W + 1 C' dz'
z C + B'
an assertion which can be easily verified by remembering that
dw' - 1
dz' (z' + t )1/2 (z' - ()1
is increased by rr/2 at the points +bo. After determining
the constants, we obtain
z' = 1/2 w + 1
Plotting the potential on the half-plane.- The boundary
lines PBCD and AED form streamlines between which the whole
stream flows (Fig. 5). The potential is thus plotted on a
strip #B - tE . This difference is, at the same time, the
amount of the fluid flowing through. In order to have a defi-
nite case in mird, we put ta - *E = i. By means of
z = e?+i: this strip is plotted on the half-plane, so that
z = B comes after -1, A comes after 0 and D remains in
If we now establish, by a linear transformation, a connec-
tion between the two half-planes, so that corresponding points
coincide, we obtain the function x = f w. In the expression
z = z'b + a we determine the constants a, b, c, so that
z' = B after -i and z' = A = - 1/2 (K + after
z = 0 and thus obtain
Here’s what’s next.
This report can be searched. Note: Results may vary based on the legibility of text within the document.
Tools / Downloads
Get a copy of this page or view the extracted text.
Citing and Sharing
Basic information for referencing this web page. We also provide extended guidance on usage rights, references, copying or embedding.
Reference the current page of this Report.
Eck, Bruno. Potential flow in engine valves, report, December 1, 1925; (digital.library.unt.edu/ark:/67531/metadc65148/m1/6/: accessed August 23, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.