Theory A3-1 Italiano (Italy) Motore Termoacustico - Foglio risposte Parte A: Onda sonora in un tubo chiuso (3.7 punti) A.1 (0.3 pt)
λmax = A.2 (0.5 pt)
V1(x) = A.3 (0.7 pt)
p1(x) = A.4 (0.3 pt)
c= A.5 (0.7 pt)
T1(x) = A.6 (1.2 pt) punto cresce decresce costante A B C Parte B: Amplificazione di onde sonore indotta da un contatto termico esterno (6.3 punti) B.1 (0.4 pt)
Tst =
Theory A3-2 Italiano (Italy) B.2 (1.0 pt)
τcr = B.3 (0.8 pt)
dQ dt= B.4 (1.9 pt)
Va=
Vb=
B.5 (0.8 pt)
Wtot = B.6 (0.8 pt)
Qtot = B.7 (0.6 pt)
η=
Topic: Oscillations & Waves, Thermodynamics, Newtonian Mechanics Metodi: Wave Equation, Simple Harmonic Motion Analysis, Thermodynamic Cycle Analysis, First Law of Thermodynamics, Ideal Gas Law Competenze: Mathematical Modeling, Physical Reasoning, Diagrammatic Reasoning Objects: Heat Engine, Tube, Gas Fonte: Testo (PDF) — p.1 Soluzione: Soluzioni (PDF)
Theory A3-1 Italian (Italy) Thermoacoustic Engine - Answer Sheet Part A: Sound Wave in a Closed Tube (3.7 points) A.1 (0.3 pt)
λmax =
A.2 (0.5 pt)
V1(x) =
A.3 (0.7 pt)
p1(x) =
A.4 (0.3 pt)
c =
A.5 (0.7 pt)
T1(x) =
A.6 (1.2 pt) point increases decreases constant A B C
Part B: Amplification of Sound Waves Induced by External Thermal Contact (6.3 points) B.1 (0.4 pt)
Tst =
Theory A3-2 Italian (Italy) B.2 (1.0 pt)
τcr =
B.3 (0.8 pt)
dQ dt =
B.4 (1.9 pt)
Va =
Vb =
B.5 (0.8 pt)
Wtot =
B.6 (0.8 pt)
Qtot =
B.7 (0.6 pt)
η =
Solution: Soluzioni (PDF)