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Fluid Acoustics Engineering Lab
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This lab explores how flow and sound work through large-scale simulation.
AboutAbout the lab
Unraveling flow and sound, toward control and sensing
The Fluid Acoustics Engineering Lab studies complex flow and sound phenomena, focusing on turbomachinery such as compressors and fans.
Using large-scale fluid simulations on supercomputers, the lab investigates how flows change over time and how flow-induced noise is generated and propagates.
It is also developing methods that combine machine learning with physics-based inverse analysis to reconstruct the state of a flow from acoustic signals.
On the lab's website, it is also introduced under the name "Kusano Lab."
Key terms
- Turbomachinery
- Machines that handle flow using rotating blades, such as compressors and fans.
- Lattice Boltzmann method
- A numerical method that computes flow as the motion of particle distributions on a lattice. It is well suited to parallel computing.
- Adjoint method
- A technique for efficiently deriving, through inverse analysis, shapes that serve a given objective (here, noise reduction).
ResearchResearch themes
Focusing on turbomachinery such as compressors and fans, the lab elucidates complex flow and sound phenomena, with the aim of making machines more efficient and quieter and advancing flow measurement and control. In addition to large-scale fluid simulation on supercomputers, it is developing flow-field reconstruction that combines machine learning with inverse analysis, as well as design techniques based on adjoint optimization.
*Illustrative imageProbing Flow with Acoustic Compressed Sensing
Capturing the detailed structure of a flow from acoustic signals alone is difficult, so the lab is developing methods that combine machine learning with physics-based inverse analysis to reconstruct invisible flow fields from limited sound data. The aim is to detect, non-invasively and in real time, changes in flow that precede stall in aircraft engines and wind turbines.
*Illustrative imageAnalysis of Unsteady Flow in Turbomachinery
The lab uses large-scale numerical simulation on supercomputers to study the unsteady behavior of separation and vortices around rotor blades in compressors, fans, and similar machines. It is developing its own analysis techniques to apply the lattice Boltzmann method, which is well suited to parallel computing, to compressors and fans.
*Illustrative imageHow Flow Noise Is Generated and Propagates
Based on the lattice Boltzmann method, the lab develops techniques that couple and analyze flow fields and acoustic fields. By analyzing the generation, propagation, and absorption of flow-induced sound in a unified way, it aims to clarify the mechanisms by which flow noise is generated and propagates.
*Illustrative imageDeriving Noise-Reducing Shapes by Inverse Analysis
Forward analysis alone makes it difficult to obtain design guidelines directly for suppressing flow-induced sound, so the lab is building an inverse analysis method that uses the adjoint method based on the lattice Boltzmann equation. It aims to efficiently derive shapes that effectively reduce noise.
MembersFaculty
The members of the Fluid Acoustics Engineering Lab consist of faculty, research students, and undergraduate students.As of 2026
- Assistant ProfessorKazuya Kusano
VoicesStudent voices
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Report an errorAbout the images
The top and research theme images are illustrative and were not taken at the lab. They are cropped from Wikimedia Commons images. Cropped CC BY-SA images are provided under the same CC BY-SA license as the original (version shown on each line).
- Top image: “Fan Noise Test Facility (GRC-1969-C-00189)” NASA Glenn Research Center / Public domain (cropped)
- Probing Flow with Acoustic Compressed Sensing: “Dodecahedral-microphone-array-DHMA” Kazunobu Kondo, Yusuke Mizuno, Takanori Nishino, Kazuya Takeda / CC BY 4.0 (cropped)
- Analysis of Unsteady Flow in Turbomachinery: “Tidal turbine blade from Orbital Marine Power's SR2000 - Science Museum, London” The wub / CC BY-SA 4.0 (cropped)
- How Flow Noise Is Generated and Propagates: “RF Fully Anechoic Room 2” Mihaelawojcik / CC BY 4.0 (cropped)
- Deriving Noise-Reducing Shapes by Inverse Analysis: “A63 Feb24 Spurn Lightship Site and Noise Reduction Barriers” Hullian111 / CC BY-SA 4.0 (cropped)
- Related lab (Applied Solid Mechanics Lab): “Friction-Driven Encoder Test (encoder 04-CC)” International Gemini Observatory/NOIRLab/NSF/AURA / CC BY 4.0 (cropped)
- Related lab (Fluid Engineering Lab): “MDH turbine pump top view” Adakiko / CC BY-SA 4.0 (cropped)
- Related lab (Fluid Production Systems Lab): “Shear Flow Vortices” KarlGaff / CC BY 4.0 (cropped)
- Related lab (Strength Evaluation and Design Lab): “ADSV-931 Mini Docking Station - LAN module - National Semiconductor LM2595S” Raimond Spekking / CC BY-SA 4.0 (cropped)
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