Grade 12 Pdf: Turbo Physics

For air, γ = 1.4, so (0.4/1.4) = 0.286.

His mentor, an old turbine specialist named Dr. Vane, handed him a rusted turbocharger from a derelict freight hauler. “Fix this,” she said, “and you’ll understand more than any textbook.” turbo physics grade 12 pdf

He learned is the time to reach the boost threshold. It’s governed by the moment of inertia of the rotating assembly and the exhaust enthalpy flow . For air, γ = 1

New density at 1.7 atm, 45°C (318 K): ρ = (1.7×101325)/(287×318) ≈ 172252/91266 ≈ 1.89 kg/m³ “Fix this,” she said, “and you’ll understand more

Kael calculated: Using (η_t = (T₁ - T₂_actual)/(T₁ - T₂_ideal)), he found that 68% of the exhaust’s enthalpy (h = u + Pv) converted into shaft work. The rest became entropy—random molecular motion—which heated the turbine housing.

Without turbo, ambient air density was 1.18 kg/m³. Density ratio = 1.56/1.18 = 1.32 → 32% more air molecules.