Numerical investigation of conjugate heat transfer in the presence of two fluid separated by a rigid wall

Koulali, Aimad; Meziani, Bachir; Sadaoui, Djamel; Sahi, Adel; Adnani, Massinissa

doi:10.1002/htj.21863

Cited by 3 publications

(2 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…We can see the heat transfer flows induced between two fluids separated by a rigid wall. In this situation, the interaction between the two fluids is completed by a heat flow continuity condition at the fluid-solid interfaces (see Koulali and colleagues [2][3][4] ). Both fluids can also be transported close to each other; in this situation, the flow is referred to as direct contact flow.…”

Section: Introductionmentioning

confidence: 99%

Numerical analysis of the two‐phase steam‐air heat transfer flow induced in smooth and corrugated channel using the VOF model

Koulali

2022

Heat Trans

Self Cite

View full text Add to dashboard Cite

In this paper, heat transfer induced in smooth and wavy channels in the presence of two phases (air and steam) was conducted and discussed. Two configurations have been studied according to the geometrical shape of the channel walls. The thermal and hydrodynamic fields in the channel have been predicted using the single-fluid approach with a solver based on the finite volume method. Explicit formulation of the volume of fluid was used to track the interface between both fluids. The mesh in the wavy channel was treated with a curvilinear mesh grid. Local Nusselt evolution, isothermal distribution, streamlines, and other parameters have been shown at different times of simulation. It was found that weak air phase velocities and wave patterns of the channel walls play a destabilizing role in the interface evolution between both fluid phases. In addition, results show that channels with wavy walls can be an effective solution to ensure higher heat transfer in two-phase flows.

show abstract

Section: Introductionmentioning

confidence: 99%

Numerical analysis of the two‐phase steam‐air heat transfer flow induced in smooth and corrugated channel using the VOF model

Koulali

2022

Heat Trans

Self Cite

View full text Add to dashboard Cite

show abstract

“…It was shown that the averaged thermal performance rises with the Grashof number, solid particle concentration, and the thermal conductivity ratio of the partition. Coupled heat transfer has been discussed in another work conducted by [10]. Two fluids with different thermal and hydrodynamic conditions were assumed.…”

Section: Introductionmentioning

confidence: 99%

Comparative Study on Effects of Thermal Gradient Direction on Heat Exchange between a Pure Fluid and a Nanofluid: Employing Finite Volume Method

et al. 2021

Self Cite

View full text Add to dashboard Cite

This work aims to determine how the temperature gradient orientation affects the heat exchange between two superposed fluid layers separated by zero wall thickness. The finite volume method (FVM) has been developed to solve the governing equations of both fluid layers. To achieve the coupling between the two layers, the heat flow continuity with the no-slip condition at the interface was adopted. The lower part of the space is filled with a nanofluid while the upper part is filled with a pure fluid layer. We have explored two cases of temperature gradient orientation: parallel gradient to gravity forces of our system and perpendicular gradient to gravity forces. We took a set of parameters, Ri and ϕ, to see their influence on the thermal and hydrodynamic fields as well as the heat exchange rate between the two layers. The main applications of this study related to biological systems such as the cytoplasm and the nucleoplasm are phase-separated solutions, which can be useful as models for membranelles organelles and can serve as a cooling system application using heat exchange. The Richardson number and the volume of nanosolid particles have a big impact on the rate of change of heat transmission. When a thermal gradient is perpendicular to gravity forces, total heat transmission improves with increasing solid volume percentage, but when the thermal gradient is parallel to gravity forces, overall heat transfer decreases significantly.

show abstract

CFD analysis of natural convection between two superposed fluids: role of corrugated bottoms

Koulali

Sahi

Meziani

et al. 2021

Chemical Engineering Communications

View full text Add to dashboard Cite

Numerical investigation of conjugate heat transfer in the presence of two fluid separated by a rigid wall

Cited by 3 publications

References 34 publications

Numerical analysis of the two‐phase steam‐air heat transfer flow induced in smooth and corrugated channel using the VOF model

Numerical analysis of the two‐phase steam‐air heat transfer flow induced in smooth and corrugated channel using the VOF model

Comparative Study on Effects of Thermal Gradient Direction on Heat Exchange between a Pure Fluid and a Nanofluid: Employing Finite Volume Method

CFD analysis of natural convection between two superposed fluids: role of corrugated bottoms

Contact Info

Product

Resources

About