What does this research mean for the field?

In transonic compressors, the ingestion of large droplets intensifies tip-leakage vortex-shock interactions, leading to increased aerodynamic losses and significantly higher particle deposition rates, whereas smaller droplets partially mitigate deposition by dissipating particle kinetic energy. Novelty: ClaimNovelty.INCREMENTAL. Consensus alignment: ConsensusAlignment.NEUTRAL.

What question did this study set out to answer?

To investigate the coupled multiphase mechanisms of droplet–particle interaction, aerodynamic loss, and blade deposition in a compressed air energy storage transonic compressor.

August 29, 2026Proceedings of the Institution of Mechanical Engineers Part G Journal of Aerospace Engineering

Effects of droplet loading and size on droplet–particle interaction and loss mechanisms in a CAES-oriented transonic compressor

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Authors

CGChuanliang GuoHarbin Institute of Technology CZCong ZengJimei University SCShaowen ChenChinese Academy of Sciences

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Implication

Numerical simulation demonstrates that large ingested droplets exacerbate aerodynamic losses and increase blade fouling in a transonic compressor, highlighting critical intake management needs.

Key Points

To investigate the coupled multiphase mechanisms of droplet–particle interaction, aerodynamic loss, and blade deposition in a compressed air energy storage transonic compressor.
Simulated multiphase flow in the NASA Rotor 37 transonic compressor using a hybrid Euler–Euler–Lagrangian computational framework.
Resolved gas–droplet momentum exchange, particle transport dynamics, and particle–wall collisions across varying droplet sizes (3 μm and 10 μm) and loading conditions.
Ingestion of 10 μm droplets intensified the tip-leakage vortex and passage shock interaction, decreasing peak pressure ratio by approximately 6.6% near stall and reducing isentropic efficiency by about 4%.
Large droplets increased particle impact velocities and incidence angles, driving blade surface deposition rates up to 250% higher than under dry operating conditions.
Smaller 3 μm droplets partially mitigated deposition by dissipating particle kinetic energy and suppressing severe wall impacts.

Cite This Study

Guo et al. (2026) studied this question.

synapsesocial.com/papers/6a9299db8e5d7d1fc0c12164 https://doi.org/10.1177/09544100261484347

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Implication

Numerical simulation demonstrates that large ingested droplets exacerbate aerodynamic losses and increase blade fouling in a transonic compressor, highlighting critical intake management needs.

Effects of droplet loading and size on droplet–particle interaction and loss mechanisms in a CAES-oriented transonic compressor

Discussion

Member takes

Implication

Key Points

Cite This Study

Effects of droplet loading and size on droplet–particle interaction and loss mechanisms in a CAES-oriented transonic compressor

Discussion

Member takes

Implication

Key Points

Cite This Study

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