Much more refined fluid simulation of Starship reentry with liquid-vapor cooling. About 5 0000 000 fluid and solid cells and 8 hours CPU time. The shield temperature is acceptable, despite that it will still glow red. About 20kg/s methane without considering the methane phase transferer energy - 510 KJ/Kg.K. The simulation study does not allow that. If we consider the phase transferer energy, the total methane consumption will decrease significantly. As well the heat transfer efficiency in the shield can be further optimized. Considering about 20 minutes reentry cooling I can approximate that 20 tons of methane should be enough for a first /still risky/ reentry attempt. The necessary cooling power is approximately 3000 kW.



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