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When non-closure variables are strictly controlled, standard URANS closures accurately predict injection-phase penetration in high-pressure hydrogen jets, indicating that previously reported URANS-experiment discrepancies are largely driven by non-closure factors and that residual model errors stem primarily from turbulent scalar flux. Novelty: ClaimNovelty.INCREMENTAL. Consensus alignment: ConsensusAlignment.NEUTRAL.

A controlled LES–URANS numerical experiment to isolate closure-model effects in engine-representative high-pressure hydrogen injection

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