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diff --git a/3765/CH1/EX1.1/Ex1_1.sce b/3765/CH1/EX1.1/Ex1_1.sce new file mode 100644 index 000000000..f67b55304 --- /dev/null +++ b/3765/CH1/EX1.1/Ex1_1.sce @@ -0,0 +1,26 @@ +clc +// Example 1.1.py +// Consider the low-speed flow of air over an airplane wing at standard +// sea level conditions the free-stream velocity far ahead of the wing +// is 100 mi/h. The flow accelerates over the wing, reaching a maximum +// velocity of 150 mi/h at some point on the wing. What is the percentage +// pressure change between this point and the free stream// + + +// Variable declaration +rho = 0.002377 // density at sea level (slug/ft^3) +p_1 = 2116.0 // pressure at sea level (lb/ft^2) +v_1 = 100.0 // velocity far ahead of the wing (mi/h) +v_2 = 150.0 // velocity at some point on the wing (mi/h) + +// Calculations + +u_1 = v_1 * 88.0/60.0 // converting v_1 in ft/s +u_2 = v_2 * 88.0/60.0 // converting v_2 in ft/s + +delP = 0.5*rho*(u_2*u_2 - u_1*u_1) // p_1 - p_2 from Bernoulli's equation +fracP = delP/p_1 // fractional change in pressure with respect to freestream + +// Result +printf("\n Fractional change in pressure is %.3f or %.1f percent", fracP, fracP*100) + |