DTA

Corso Ordinario Secondo Livello

MEINI, ALESSANDRO

etd-10212024-231425

Development of Numerical Fluid Dynamics and Radiative Simulations for Neptune Aerocapture maneuver

Classe Scienze Sperimentali

INGEGNERIA - INGEGNERIA

Tutor Prof. RICOTTI, LEONARDO
Relatore Prof. ANDREUSSI, TOMMASO
Relatore Prof. MAGIN, THIERRY
Relatore Prof. BARISELLI, FEDERICO
Presidente Prof.ssa BOGONI, ANTONELLA
Membro Dott.ssa CREA, SIMONA
Membro Prof. ABENI, LUCA
Membro Prof. AVIZZANO, CARLO ALBERTO
Membro Prof. CASTOLDI, PIERO
Membro Prof. MICERA, SILVESTRO
Membro Prof. ODDO, CALOGERO MARIA

• CFD
• Hypersonic
• Kinetics
• Neptune
• Non-equilibrium
• Radiation

09/12/2024;

parziale

This work presents the implementation of new state-of-the-art kinetics and transport models for Ice Giant atmospheres in CFD nonequilibrium simulations along the stagnation line during hypersonic atmospheric entry. Radiative simulations are subsequently run using the CFD results to compute the radiative heat flux at the stagnation point. The selected test case involves an aerocapture maneuver at 29 km/s in Neptune’s atmosphere. Four cases are analyzed, examining the influence of hydrogen ionization, carbon species, and gas-surface interactions on radiation. Results show that the updated models significantly increase radiative heating at the stagnation point, underscoring the importance of refined kinetics models for this test case. Additionally, a preliminary implementation of an electronic specific reduced STS model for the H-He mixture is presented.

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