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Fluid Systems Informatics Lab
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A lab that explores flow phenomena through numerical simulation and theory.
AboutAbout the lab
Exploring the laws of flow through computation and theory
The lab conducts fundamental research in fluid dynamics.
Flows appear in a wide range of fields, from phenomena at the biological level to those at planetary and cosmic scales, and in engineering applications such as aerospace, the global environment, and next-generation energy industries.
Using numerical simulation and theory, the lab works on discovering universal laws, elucidating common phenomena, and developing general-purpose methods.
Its research is presented in three areas: computational fluid dynamics; elucidation of the statistical properties of turbulence and development of turbulence models; and vortex dynamics and flow stability analysis.
Key terms
- Turbulence
- A state in which a flow is irregularly disordered and eddies of various sizes are mixed together. It is commonly seen in the flow of air and water.
- Aerodynamic noise
- Sound generated when air flows around an object.
- Vortex ring
- A vortex that travels while rotating in the shape of a ring, like a smoke ring. Under certain conditions it becomes unstable and transitions to turbulence.
ResearchResearch themes
As the range of applications of numerical simulation of flow systems widens, demands for greater simulation accuracy and for methods that draw insight from large-scale data are both growing. To meet these demands, the lab pursues the discovery of universal laws, the elucidation of common phenomena, and the development of general-purpose methods.
*Illustrative imageNumerical computation of flows and flow noise
The lab develops methods to directly compute flows involving objects of complex shape, or objects that move or deform, together with the aerodynamic noise these flows generate. It also studies the reduction of aerodynamic noise using porous materials, through direct numerical simulation.
*Illustrative imageProperties of turbulence and development of turbulence models
The lab works on developing new turbulence models using statistical machine learning. It also uses numerical simulation to study how to extend the region of smooth flow (laminar flow) in the boundary layer over a swept wing.
*Illustrative imageVortex dynamics and flow stability
The lab investigates the process by which a vortex ring becomes unstable and transitions to turbulence. It also works to elucidate instability that arises from the combination of hyperbolic instability and the phase shift of waves.
MembersFaculty
- ProfessorYuji Hattori
- Associate ProfessorMakoto Hirota
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: “Turbulent Flow in a Cyclone Separator” SimScale GmbH / CC BY-SA 4.0 (cropped)
- Numerical computation of flows and flow noise: “X-43A (Hyper - X) Mach 7 computational fluid dynamic (CFD)” NASA / Public domain (cropped)
- Properties of turbulence and development of turbulence models: “Boundary-Layer-Transition” Herbert.Oertel / www.prof.oertel.de / CC BY-SA 3.0 (cropped)
- Vortex dynamics and flow stability: “Giant smoke ring” Chocolateoak / CC BY-SA 3.0 (cropped)
- Related lab (Biological Information Systems Science Lab): “Integrated Genome Browser 9.1.0 showing chromosome 1 of the human genome assembly hg38” Aloraine / CC BY-SA 4.0 (cropped)
- Related lab (Information and Communication Software Lab): “DHL Netherlands local site computer room server racks - IMG 3297” Jemimus / CC BY 2.0 (cropped)
- Related lab (Information Networks Lab): “RIT CSH - Network Rack ( )” Jon Parise / CC BY-SA 2.0 (cropped)
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