A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Simulation of vortex shedding around cylinders by immersed boundary-lattice Boltzmann flux solver
Highlights The phenomena of vortex shedding of one isolated cylinder and two cylinders in tandem and side-by-side arrangements have been well simulated applying the immersed boundary-lattice Boltzmann flux solver. Good agreements have been achieved by comparing with experiment and benchmark simulations so that the reliability of IB-LBFS in ocean engineering is verified. The details of flow fields have been well ensured by IB-LBFS so that the shedding vortex is observed and hydrodynamic parameters are obtained, and the conversion of vortex type and the beat phenomenon are successfully represented in respective arrangements.
Abstract The hydrodynamic response accompanied with vortex shedding around circular cylinders plays a pivotal role in ocean engineering, and the numerical simulation is an essential and efficient way. The computational domain is usually in large scale for this kind of problem, and the details of flow field surrounding structures are necessary to be observed as they play key influence. Comparing with popular numerical methods for fluids such as the Navier-Stokes (N-S) solver and the lattice Boltzmann method (LBM), to some extent, the lattice Boltzmann flux solver (LBFS) inherits their advantages and removes the limitations so that the accuracy and efficiency are both ensured. In this work, the immersed boundary-lattice Boltzmann flux solver (IB-LBFS) with implicit velocity correction is implemented to simulate vortex shedding around circular cylinders. Firstly, the simulation of flow past an isolated stationary cylinder is carried out as the validation of the IB-LBFS. After that, the phenomena of flow past two stationary cylinders in two kinds of arrangements are simulated with respective spacing ratios and Reynolds numbers. The instantaneous contours of vorticity are shown to illustrate the vortex shedding, and the hydrodynamic parameters such as the drag coefficient, the lift coefficient, and the Strouhal number are given. Through comparing with previous literatures, it can be seen that the IB-LBFS is reliable and has sufficient accuracy so that it can represent the details of the flow field, for example the beat phenomenon, in this simulation, which indicates its wide application for fluid-structure interaction problems in ocean engineering.
Simulation of vortex shedding around cylinders by immersed boundary-lattice Boltzmann flux solver
Highlights The phenomena of vortex shedding of one isolated cylinder and two cylinders in tandem and side-by-side arrangements have been well simulated applying the immersed boundary-lattice Boltzmann flux solver. Good agreements have been achieved by comparing with experiment and benchmark simulations so that the reliability of IB-LBFS in ocean engineering is verified. The details of flow fields have been well ensured by IB-LBFS so that the shedding vortex is observed and hydrodynamic parameters are obtained, and the conversion of vortex type and the beat phenomenon are successfully represented in respective arrangements.
Abstract The hydrodynamic response accompanied with vortex shedding around circular cylinders plays a pivotal role in ocean engineering, and the numerical simulation is an essential and efficient way. The computational domain is usually in large scale for this kind of problem, and the details of flow field surrounding structures are necessary to be observed as they play key influence. Comparing with popular numerical methods for fluids such as the Navier-Stokes (N-S) solver and the lattice Boltzmann method (LBM), to some extent, the lattice Boltzmann flux solver (LBFS) inherits their advantages and removes the limitations so that the accuracy and efficiency are both ensured. In this work, the immersed boundary-lattice Boltzmann flux solver (IB-LBFS) with implicit velocity correction is implemented to simulate vortex shedding around circular cylinders. Firstly, the simulation of flow past an isolated stationary cylinder is carried out as the validation of the IB-LBFS. After that, the phenomena of flow past two stationary cylinders in two kinds of arrangements are simulated with respective spacing ratios and Reynolds numbers. The instantaneous contours of vorticity are shown to illustrate the vortex shedding, and the hydrodynamic parameters such as the drag coefficient, the lift coefficient, and the Strouhal number are given. Through comparing with previous literatures, it can be seen that the IB-LBFS is reliable and has sufficient accuracy so that it can represent the details of the flow field, for example the beat phenomenon, in this simulation, which indicates its wide application for fluid-structure interaction problems in ocean engineering.
Simulation of vortex shedding around cylinders by immersed boundary-lattice Boltzmann flux solver
Yan, Haoran (author) / Zhang, Guiyong (author) / Wang, Shuangqiang (author) / Hui, Da (author) / Zhou, Bo (author)
Applied Ocean Research ; 114
2021-06-21
Article (Journal)
Electronic Resource
English
Vortex shedding behind modified circular cylinders
| Online Contents | 2000
Vortex shedding from two cylinders in tandem
| Elsevier | 1988
| British Library Online Contents | 2007
| British Library Conference Proceedings | 2013