initial commit / add all books

2 files changed, 35 insertions, 0 deletions

diff --git a/2223/CH8/EX8.2/Ex8_2.sav b/2223/CH8/EX8.2/Ex8_2.sav
new file mode 100755
index 000000000..5d557cc31
--- /dev/null
+++ b/2223/CH8/EX8.2/Ex8_2.sav
diff --git a/2223/CH8/EX8.2/Ex8_2.sce b/2223/CH8/EX8.2/Ex8_2.sce
new file mode 100755
index 000000000..963eb61a0
--- /dev/null
+++ b/2223/CH8/EX8.2/Ex8_2.sce
@@ -0,0 +1,35 @@
+// scilab Code Exa 8.2 Calculation on a turbine blade row cascade

+

+beta1=35; //  blade angle at entry

+beta2=55; // blade angle at exit

+i=5; // incidence

+delta=2.5; // deviation

+alpha1=beta1+i; // air angle at entry

+alpha2=beta2-delta; // air angle at exit

+t_c=0.3; // maximum thickness-chord ratio(t/l)

+a_r=2.5; // aspect ratio

+

+//part(a)optimum pitch-chord ratio from Zweifels relation

+C_z=0.8; // from Zweifel's relation 

+p_c=C_z/(2*(cosd(alpha2)^2)*(tand(alpha1)+tand(alpha2)));

+disp (p_c,"(a)the optimum pitch-chord ratio from Zweifels relation is")

+

+//part(b) loss coefficient from Soderbergs and Hawthorne relations

+ep=alpha1+alpha2; // deflection angle

+Zeeta=0.075;

+b=(1+Zeeta)*(0.975+(0.075/a_r))

+zeeta=b-1;

+disp (zeeta,"(b)(i)the loss coefficient from Soderbergs relation is")

+z_p=0.025*(1+((ep/90)^2)); // Hawthorne's relation

+disp (z_p,"(b)(ii)the loss coefficient from Hawthorne relation is")

+z=(1+(3.2/a_r))*z_p; // the total cascade loss coefficient

+Y=0.5*(z+zeeta); 

+

+// part(c)drag coefficient

+alpham=atand(0.5*(tand(alpha2)-tand(alpha1)));

+C_D=p_c*Y*(cosd(alpham)^3)/(cosd(alpha2)^2);

+disp (C_D,"(c)the drag coefficient is")

+

+// part(d)Lift coefficient

+C_L=(2*p_c*(tand(alpha1)+tand(alpha2))*cosd(alpham))+(C_D*tand(alpham));

+disp (C_L,"(d)the Lift coefficient is")