Consider the following Fanno flow problem: Flow enters a constant area duct at a
temperature of 273 K and a Mach number 0.2 and eventually reaches sonic
condition (Mach number =1) due to friction. Assume 𝛾 = 1.4. The static
temperature at the location where sonic condition is reached is_____________ K
(rounded off to 2 decimal places).
Official Answer Key:
0.0
Step-by-Step Solution & Explanation
### **Official Solution & Step-by-Step Derivation (GATE AE 2024 Q.59)**
**1. Governing Concept & Syllabus Domain**:
This question pertains to **Incompressible & Compressible Aerodynamics** under *Aerodynamics & Fluid Mechanics* (2 Marks, 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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