A novel immersed boundary/Fourier pseudospectral method for flows with thermal effects

Kinoshita, Denise; Neto, Aristeu da Silveira; Mariano, Felipe Pamplona; Silva, Renato Aparecido Pimentel da; Serfaty, Ricardo

doi:10.1080/10407790.2015.1104199

Cited by 7 publications

(3 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Over the immersed frontier Γ PhD , any boundary conditions can be modelled even if they are not periodic, in the present article only Dirichlet boundary conditions are studied. Kinoshita et al [21,22] show that thermal boundary conditions are assessed, [23] boundary conditions to two-phase flows are tested, and [18,28] turbulent wall models are presented.…”

Section: Immersed Boundary Methodology-ibmmentioning

confidence: 99%

“…The listed works that have the purpose of evaluating some specific numerical and/or computational aspect in IMERSPEC methodology [20] are compared the analysis of convergence orders and computational times between the pseudo-spectral Fourier method and the finite volume method. In [21,22] is presented the development of the insertion of three different boundary conditions, using the immersed boundary method, particularly to thermal flow problems. In [23], the Lagrangian force is calculated by a function of the surface tension by the contact of two immiscible fluids, the immersed boundary is not rigid, and a different algorithm is developed.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

An improved immersed boundary method by coupling of the multi-direct forcing and Fourier pseudo-spectral methods

Mariano

Moreira

Nascimento

et al. 2022

J Braz. Soc. Mech. Sci. Eng.

Self Cite

View full text Add to dashboard Cite

The present paper aims to report an improve on the development of the IMERSPEC methodology, which is a methodology that couples the Fourier pseudo-spectral and immersed boundary methods, which can now solve flows over complex geometries. In the present work, the Lagrangian mesh that represents the immersed body inside the flow does not have to coincide with the Eulerian mesh. Furthermore, a high accuracy for the resultant methodology is achieved. These two important improvements arise from the development of the multi-direct forcing method and used to calculate the force field of the immersed boundary method. In order to verify the IMERSPEC methodology, a manufactured solution technique was used. The results of a refined mesh were employed, and different distribution and interpolation functions were used and analysed. Finally, flows over a backward-facing step geometry were simulated in two dimensions. This type of flow presents several physical features, for example, detachment and reattachment of the boundary layer and vortex generation, which are difficult to capture using numerical solutions. A comparison with the experimental data is presented and shows that the IMERSPEC methodology is promising for computational fluid dynamics applications and its analysis.

show abstract

Section: Immersed Boundary Methodology-ibmmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

An improved immersed boundary method by coupling of the multi-direct forcing and Fourier pseudo-spectral methods

Mariano

Moreira

Nascimento

et al. 2022

J Braz. Soc. Mech. Sci. Eng.

Self Cite

View full text Add to dashboard Cite

show abstract

“…The main advantages of the immersed boundary method are, in most of the cases, savings in memory and CPU use, and easy grid generation compared to the unstructured grid method. Another advantage is the possibility of its application within several different discretization methods [1][2][3][4][5].…”

Section: General Aspectsmentioning

confidence: 99%

Assessment of two immersed boundary methods for flow over thin plates and sharp edges

Andrade

Martins

Neto

et al. 2018

J Braz. Soc. Mech. Sci. Eng.

View full text Add to dashboard Cite

The extension of two different immersed boundary methods is proposed and applied to the numerical computation of uniform flow over blunt and sharp bodies: a directional version of the multi-direct forcing method and a semi-implicit version of the local ghost cell method; the first is an indirect and the second a direct method. These methods are investigated by applying them to incompressible laminar flows. The salient features of the methods are described with special emphasis on the ability to compute flows past thin plates and sharp edges. The transport equations are discretized by using the finite difference method in a Cartesian grid. The immersed boundary is represented by a finite number of Lagrangian points distributed over the solid-fluid interface. In order to test the accuracy of these approaches, three different benchmark cases are assessed. The directional version of the multi-direct forcing method is in good accordance with the flow past blunt bodies. However, it shows some numerical inconsistency when dealing with sharp and thin geometries due to the discontinuity present in the velocity and pressure fields. On the other hand, the semi-implicit version of the local ghost cell method presents good agreement with analytical, numerical and experimental data of all simulated cases. Keywords Immersed boundary method Á Ghost cell method Á Multi-direct forcing method Á Cartesian grid Á Thin plate Á Sharp geometry edges

show abstract

Turbulent natural convection in a composite annulus using a novel numerical scheme and the thermal nonequilibrium hypothesis

Lemos

Masciarelli

2017

Numerical Heat Transfer, Part A: Applications

View full text Add to dashboard Cite

A novel immersed boundary/Fourier pseudospectral method for flows with thermal effects

Cited by 7 publications

References 23 publications

An improved immersed boundary method by coupling of the multi-direct forcing and Fourier pseudo-spectral methods

An improved immersed boundary method by coupling of the multi-direct forcing and Fourier pseudo-spectral methods

Assessment of two immersed boundary methods for flow over thin plates and sharp edges

Turbulent natural convection in a composite annulus using a novel numerical scheme and the thermal nonequilibrium hypothesis

Contact Info

Product

Resources

About