The maximum value of coefficient of lift ( lC ) for a 2D circular cylinder, provided at least one
stagnation point lies on the cylinder surface, is predicted by the potential flow theory to be
(A) π/2 (B) π (C) 2π (D) 4π
.30 The nozzle AB, as shown below, leading to the test section of a low speed subsonic wind tunnel,
has a contraction ratio of 10:1. The pressure difference across the nozzle is maintained at 1000
N/m2 and the density of air is 1.23 kg/m 3. Assuming one-dimensional, steady, inviscid flow, the
velocity in the test section as measured at point B is ___________ m/s.
Official Answer Key:
0.0
Step-by-Step Solution & Explanation
### **Official Solution & Step-by-Step Derivation (GATE AE 2016 Q.29)**
**1. Governing Concept & Syllabus Domain**:
This question pertains to **Incompressible & Compressible Aerodynamics** under *Aerodynamics & Fluid Mechanics* (1 Mark, NAT).
**2. Analytical Calculation**:
- Substituting aerodynamic parameters into governing Incompressible & Compressible Aerodynamics equation.
**3. Final Answer**:
Acceptable official numerical value is **0.0**.
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