Numerical simulation of real-world flows

T Hayase - Fluid Dynamics Research, 2015 - iopscience.iop.org
Obtaining real flow information is important in various fields, but is a difficult issue because
measurement data are usually limited in time and space, and computational results usually …

Nudging-based data assimilation of the turbulent flow around a square cylinder

M Zauner, V Mons, O Marquet… - Journal of Fluid …, 2022 - cambridge.org
We investigate the estimation of the turbulent flow around a canonical square cylinder at
based on temporally resolved but spatially sparse velocity data and solving the unsteady …

[HTML][HTML] Stochastic particle advection velocimetry (SPAV): theory, simulations, and proof-of-concept experiments

K Zhou, J Li, J Hong, SJ Grauer - Measurement Science and …, 2023 - iopscience.iop.org
Particle tracking velocimetry (PTV) is widely used to measure time-resolved, three-
dimensional velocity and pressure fields in fluid dynamics research. Inaccurate localization …

Reduced-order Kalman-filtered hybrid simulation combining particle tracking velocimetry and direct numerical simulation

T Suzuki - Journal of Fluid Mechanics, 2012 - cambridge.org
The capability of state-of-the-art techniques integrating experimental and computational fluid
dynamics has been expanding recently. In our previous study, we have developed a hybrid …

[HTML][HTML] Time-supersampling of 3D-PIV measurements with vortex-in-cell simulation

JFG Schneiders, RP Dwight, F Scarano - Experiments in Fluids, 2014 - Springer
The present work investigates the use of a numerical approximation to the Navier–Stokes
equations to increase the temporal resolution of time-resolved PIV data for general flows …

[HTML][HTML] State observer data assimilation for RANS with time-averaged 3D-PIV data

E Saredi, NT Ramesh, A Sciacchitano, F Scarano - Computers & Fluids, 2021 - Elsevier
State observer techniques are investigated for the assimilation of three-dimensional velocity
measurements into computational fluid dynamics simulations based on Reynolds-averaged …

[HTML][HTML] The effect of variations in experimental and computational fidelity on data assimilation approaches

C Thompson, U Cadambi Padmanaban… - … and Computational Fluid …, 2024 - Springer
We conduct a comprehensive analysis of two data assimilation methods: the first utilizes the
discrete adjoint approach with a correction applied to the production term of the turbulence …

Obtaining velocity and pressure distributions in natural convection flows using experimental temperature fields

NA Vinnichenko, YY Plaksina, AV Pushtaev… - Applied Thermal …, 2022 - Elsevier
New hybrid simulation technique is proposed for natural convection flows, which combines
experimental measurements of the instantaneous temperature fields with numerical …

[HTML][HTML] A review of measurement-integrated simulation of complex real flows

T Hayase - Journal of Flow Control, Measurement & Visualization, 2015 - scirp.org
In spite of the inherent difficulty, reproducing the exact structure of real flows is a critically
important issue in many fields, such as weather forecasting or feedback flow control. In order …

Hierarchy of hybrid unsteady-flow simulations integrating time-resolved PTV with DNS and their data-assimilation capabilities

T Suzuki, F Yamamoto - Fluid Dynamics Research, 2015 - iopscience.iop.org
Data-assimilation capabilities of hybrid-type simulations integrating time-resolved particle
image velocimetry with unsteady computational fluid dynamics (CFD) are characterized, and …