Space–time isogeometric flow analysis with built-in Reynolds-equation limit

T Kuraishi, K Takizawa, TE Tezduyar - Mathematical Models and …, 2019 - World Scientific
We present a space–time (ST) computational flow analysis method with built-in Reynolds-
equation limit. The method enables solution of lubrication fluid dynamics problems with a …

Heart valve isogeometric sequentially-coupled FSI analysis with the space–time topology change method

T Terahara, K Takizawa, TE Tezduyar… - Computational …, 2020 - Springer
Heart valve fluid–structure interaction (FSI) analysis is one of the computationally
challenging cases in cardiovascular fluid mechanics. The challenges include unsteady flow …

Gas turbine computational flow and structure analysis with isogeometric discretization and a complex-geometry mesh generation method

Y Bazilevs, K Takizawa, MCH Wu, T Kuraishi… - Computational …, 2021 - Springer
A recently introduced NURBS mesh generation method for complex-geometry Isogeometric
Analysis (IGA) is applied to building a high-quality mesh for a gas turbine. The compressible …

Immersogeometric cardiovascular fluid–structure interaction analysis with divergence-conforming B-splines

D Kamensky, MC Hsu, Y Yu, JA Evans… - Computer methods in …, 2017 - Elsevier
This paper uses a divergence-conforming B-spline fluid discretization to address the long-
standing issue of poor mass conservation in immersed methods for computational fluid …

Ventricle-valve-aorta flow analysis with the space–time isogeometric discretization and topology change

T Terahara, K Takizawa, TE Tezduyar… - Computational …, 2020 - Springer
We address the computational challenges of and presents results from ventricle-valve-aorta
flow analysis. Including the left ventricle (LV) in the model makes the flow into the valve, and …

Space–time variational multiscale isogeometric analysis of a tsunami-shelter vertical-axis wind turbine

Y Otoguro, H Mochizuki, K Takizawa… - Computational …, 2020 - Springer
We present computational flow analysis of a vertical-axis wind turbine (VAWT) that has been
proposed to also serve as a tsunami shelter. In addition to the three-blade rotor, the turbine …

An immersogeometric formulation for free-surface flows with application to marine engineering problems

Q Zhu, F Xu, S Xu, MC Hsu, J Yan - Computer Methods in Applied …, 2020 - Elsevier
An immersogeometric formulation is proposed to simulate free-surface flows around
structures with complex geometry. The fluid–fluid interface (air–water interface) is handled …

Space–time computational analysis of tire aerodynamics with actual geometry, road contact, tire deformation, road roughness and fluid film

T Kuraishi, K Takizawa, TE Tezduyar - Computational Mechanics, 2019 - Springer
The space–time (ST) computational method “ST-SI-TC-IGA” has recently enabled
computational analysis of tire aerodynamics with actual tire geometry, road contact and tire …

Space–time VMS flow analysis of a turbocharger turbine with isogeometric discretization: computations with time-dependent and steady-inflow representations of the …

Y Otoguro, K Takizawa, TE Tezduyar, K Nagaoka… - Computational …, 2019 - Springer
Many of the computational challenges encountered in turbocharger-turbine flow analysis
have been addressed by an integrated set of space–time (ST) computational methods. The …

A moving-domain CFD solver in FEniCS with applications to tidal turbine simulations in turbulent flows

Q Zhu, J Yan - Computers & Mathematics with Applications, 2021 - Elsevier
A moving-domain computational fluid dynamics (CFD) solver is designed by deploying the
Arbitrary Lagrangian Eulerian Variational Multi-scale Formulation (ALE-VMS) enhanced with …