CFD investigation on secondary flow characteristics in double-curved subsea pipelines with different spatial structures

F Han, Y Liu, Q Lan, W Li, Z Wang - Journal of Marine Science and …, 2022 - mdpi.com
Double-curved pipes are widely employed as essential components of subsea pipeline
systems. Considering the layout flexibility and application diversity, there are various spatial …

Numerical investigation of blind-tee effect on flow mixing in double-bend combinations

Y Liu, F Han, G Yin, MC Ong, W Li, Z Wang - Ocean Engineering, 2023 - Elsevier
Blind tees are commonly used in offshore production systems for the flow mixing and
measurement of oil and gas products. Since subsea pipelines usually consist of multiple …

Unsteady dynamics in a subsonic duct flow with a bluff body

LK George, SK Karthick, AR Srikrishnan, R Kannan - Physics of Fluids, 2022 - pubs.aip.org
A series of reduced-order numerical simulations on a specific bluff body type (v-gutters) in a
subsonic duct flow is performed to assess the unsteady wake dynamics. Two of the v-gutter's …

Estimation of hydrodynamic forces on cylinders undergoing flow-induced vibrations based on modal analysis

G Yin, MJ Janocha, MC Ong - Journal of …, 2022 - asmedigitalcollection.asme.org
The objective of the present study is estimating hydrodynamic forces acting on cylinders
undergoing vortex-induced vibration (VIV) using dynamic mode decomposition (DMD). The …

Laminar supersonic sphere wake unstable bifurcations

A Sansica, Y Ohmichi, JC Robinet, A Hashimoto - Physics of Fluids, 2020 - pubs.aip.org
The laminar sphere unstable bifurcations are sought at a Mach number of M∞= 1.2. Global
stability performed on steady axisymmetric base flows determines the regular bifurcation …

Mode transformations of vortex shedding behind a sphere with the effect of Lorentz force

W Yao, H Zhang, D Jiang, M Gui, Z Zhao, Z Chen - Physics of Fluids, 2021 - pubs.aip.org
In this paper, the modes of vortex shedding in the wake of a stationary sphere with the
Lorentz force, which can be generated by the actuators in weakly conductive fluids and is …

Numerical Investigation of Flow around Two Tandem Cylinders in the Upper Transition Reynolds Number Regime Using Modal Analysis

A Nazvanova, G Yin, MC Ong - Journal of Marine Science and …, 2022 - mdpi.com
Flow around two tandem cylinders at Re= 3.6× 106 for different center-to-center spacing
ratio (L/D) is investigated numerically using two-dimensional (2D) Unsteady Reynolds …

Experimental measurements of the wake of a sphere at subcritical Reynolds numbers

R Muyshondt, T Nguyen… - Journal of Fluids …, 2021 - asmedigitalcollection.asme.org
This work experimentally investigated the flow phenomena and vortex structures in the wake
of a sphere located in a water loop at Reynolds numbers of Re= 850, 1,250, and 1,700 …

Large eddy simulation and dynamic mode decomposition of turbulent mixing layers

Y Cheng, Q Chen - Applied Sciences, 2021 - mdpi.com
Turbulent mixing layers are canonical flow in nature and engineering, and deserve
comprehensive studies under various conditions using different methods. In this paper …

Interaction between a stationary sphere and turbulent flow in a boundary layer

D Li, K Luo, H Zhao, W Shang, J Fan - Physics of Fluids, 2022 - pubs.aip.org
We investigate the interaction of a stationary sphere with turbulent flows in a spatially
developing boundary layer over a flat plate by means of fully resolved direct numerical …