Numerical Simulation of the Liquid Flow Into a Porous Medium With Phase Change: Application to Metal Matrix Composites Processing

Borrello, C. Del; Lacoste, Éric

doi:10.1080/716100518

Cited by 17 publications

(8 citation statements)

References 17 publications

(30 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In Eqs. (12) and (13), the second term containing the penalty parameter (c) are evaluated with two point Gaussian quadrature (reduced integration penalty formulation, [41]). The nonlinear residual equations [Eqs.…”

Section: Velocity and Temperature Distributionsmentioning

confidence: 99%

“…Natural convection in fluid-saturated porous materials is encountered in many applications such as molten metals infiltration in porous media [9][10][11][12], drying and transport of gases in porous media [13][14][15], enhanced oil recovery by hot-water flooding in porous beds [16], combustion of heavy oils in porous reservoirs [17,18], etc., where the thermal boundary conditions play a significant role in the overall process. Effects of thermal boundary conditions, such as sinusoidal heating and discrete heating, are reported in the literature [19][20][21].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Entropy Generation During Natural Convection in a Porous Cavity: Effect of Thermal Boundary Conditions

Basak

Kaluri

Balakrishnan

2012

Numerical Heat Transfer, Part A: Applications

View full text Add to dashboard Cite

Entropy generation plays a significant role in the overall efficiency of a given system, and a judicious choice of optimal boundary conditions can be made based on a knowledge of entropy generation. Five different boundary conditions are considered and their effect of the permeability of the porous medium, heat transfer regime (conduction and convection) on entropy generation due to heat transfer, and fluid friction irreversibilities are investigated in detail for molten metals (Pr ¼ 0.026) and aqueous solutions (Pr ¼ 10), with Darcy numbers (Da) between 10 À5 -10 À3 and at a representative high Rayleigh number, Ra ¼ 5 Â 10 5 . It is observed that the entropy generation rates are reduced in sinusoidal heating (case 2) when compared to that for uniform heating (case 1), with a penalty on thermal mixing. Finally, the analysis of total entropy generation due to variation in Da and thermal mixing and temperature uniformity indicates that, there exists an intermediate Da for optimal values of entropy generation, thermal mixing, and temperature uniformity.

show abstract

Section: Velocity and Temperature Distributionsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Entropy Generation During Natural Convection in a Porous Cavity: Effect of Thermal Boundary Conditions

Basak

Kaluri

Balakrishnan

2012

Numerical Heat Transfer, Part A: Applications

View full text Add to dashboard Cite

show abstract

“…scheme for the convective term (Sweby, 1984). The complete formulation of the numerical method used for the heat transfer problem is described by Del Borrello and Lacoste (2003). Equation 8 λ is the tensor of thermal conductivity of the medium ( ρ c) is the volumetric heat capacity of the medium and Q is a source term which includes the enthalpy release due to phase change.…”

Section: Dynamic Studymentioning

confidence: 99%

Metal matrix composite processing: numerical study of heat transfer between fibers and metal

Cantarel¹,

Lacoste²,

Danis³

et al. 2005

International Journal of Numerical Methods for Heat &Amp; Fluid Flow

View full text Add to dashboard Cite

PurposeTo study heat transfer kinetics at the fiber scale in order to describe injection of liquid metal through a fibrous perform initially situated in a preheated mould, which is one of the various methods used in order to produce metal matrix composite materials (MMCs).Design/methodology/approachThe first part presents a preliminary study in a static case to describe heat transfer kinetics between a fiber and the matrix in the case of a sudden contact of both components initially set up at different temperatures. This model enables to study the influence of the various parameters of the problem on heat transfer kinetics with phase change. In the second part, we present a modeling which takes into account the metal convection within the pores of the preform.FindingsThe numerical results of these two models justify the instantaneous thermal equilibrium assumption classically admitted to describe MMCs manufacturing methods. The results of this dynamic microscopic model are compared with the results issued from a single temperature macroscopic model to justify the methodological approach and the choice of the microscopic domain geometry representative of the MMCs manufacturing process.Research limitations/implicationsThis first numerical model at the microscopic scale deals with the study of heat transfer between fibers and a pure metal. Next step will be the extension of this study to the preform infiltration by a metal alloy. Injection of matrix alloy implies the appearance of phenomena generated by segregation during phase changes.Originality/valueThe results of simulation tests, making use of the usual conditions of MMCs processing, show pretty good agreement with those of macroscopic models describing the anisothermal flow of a pure metal through a porous medium. From this coherence and from the results of the microscopic models as well, the hypothesis of instantaneous thermal equilibrium between fibers and metal (widely used in the literature to study the production of MMCs by infiltration of the liquid metal through the fibrous reinforcement) is justified. Moreover, it will be possible to extend it to the study of infiltration by an alloy, taking then into account thermal and solutal coupled transfers inside the study domain defined in the present work.

show abstract

“…Solidification/freezing of liquid in porous media can occur in many natural phenomena and engineering systems. Some examples are the freezing of water in soil (Lunardini, 1981), frozen food (Albin et al, 1982), water barrier in construction and mining processes (Sager, 1968), chill casting (M'Hamdi, 2002, slab casting (Meng and Thomas, 2003), liquid metal injection (Del Borrello and Lacoste, 2003), latent-heat thermal-energy storage Solidification of liquid copper (Sasaguchi et al, 1993), laser annealing (Kisdarjono et al, 2003, SLS (Zhang et al, 2000;Chen and Zhang, 2006) and laser drilling (Ganesh et al, 1997a, b). Natural convection plays a significant role in solidification of a superheated fluid in a porous medium (Zhang and Nguyen, 1999).…”

Section: Introductionmentioning

confidence: 99%

Numerical simulation of solidification of liquid copper saturated in porous structures fabricated by sintered steel particles

Damronglerd

Zhang

Yang

2012

International Journal of Numerical Methods for Heat &Amp; Fluid Flow

View full text Add to dashboard Cite

Purpose -The purpose of this paper is to solve solidification of liquid copper saturated in porous structure fabricated by sintered steel particles using a temperature-transforming model (TTM). Design/methodology/approach -The convection in the liquid region is modeled using Navier-Stokes equation with Darcy's term and Forchheimer's extension. The effect of natural convection is considered using the Boussinesq approximation. For the solid region, the velocity is set to zero by the Ramped Switch-Off Method (RSOM). The model was validated by comparing the results with existing experimental and numerical results with gallium as phase change material and packed glass beads as porous structure. Solidification of liquid copper saturated in sintered copper particles is then simulated and the effects of various parameters on solidification process were studied. Findings -The results indicate that the stronger convection effects are shown for the cases with high Raleigh number or high Darcy's number. However, when either Raleigh number or Darcy's number is reduced to below a certain order of magnitude, the solidification becomes conduction-controlled. Originality/value -This work is the first application of the TTM to solve solidification in porous media, which can find its application in post-processing of laser sintered parts.

show abstract

Numerical Simulation of the Liquid Flow Into a Porous Medium With Phase Change: Application to Metal Matrix Composites Processing

Cited by 17 publications

References 17 publications

Entropy Generation During Natural Convection in a Porous Cavity: Effect of Thermal Boundary Conditions

Entropy Generation During Natural Convection in a Porous Cavity: Effect of Thermal Boundary Conditions

Metal matrix composite processing: numerical study of heat transfer between fibers and metal

Numerical simulation of solidification of liquid copper saturated in porous structures fabricated by sintered steel particles

Contact Info

Product

Resources

About