Modeling of Semisolid Flow

Favier, Véronique

doi:10.1016/b978-0-08-096532-1.00519-7

Cited by 4 publications

(3 citation statements)

References 59 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In order to conduct the numerical evaluation and to investigate the flow behavior of the material, cassava leaves were considered as non‐Newtonian fluid (Favier, 2014). Calculations are based on Navier–Stokes equations that have been widely used for extrusion processes (Gopalakrishna, Jaluria, & Karwe, 1992; Kwag, Kim, Lee and Lyu, 2001), cotton seed cake (He & Zhou, 2010), wheat dough (Dhanasekharan & Kokini, 2003), and liquid food (Kechichian, Crivellari, Gut, & Tadini, 2012).…”

Section: Introductionmentioning

confidence: 99%

CFD assisted investigation of mechanical juice extraction from cassava leaves and characterization of the products

Latif

Romuli

Barati

et al. 2020

Food Science & Nutrition

View full text Add to dashboard Cite

Cassava is grown because of its starchy roots, but the leaves being rich in protein are mostly underutilized. For protein recovery, mechanical juice extraction from cassava leaves and the extraction process was evaluated using computational fluid dynamics (CFD) simulation. The influence of input variables such as nozzle diameter and rotational speed of the screw was investigated in relation to process efficiency. The highest green juice extraction yield (81.0%) from cassava leaves and dry matter of press cake (61.3%) were achieved by using 4 mm nozzle diameter and 18 rpm screw speed. The protein content of the cassava leaves, press cake, juice sediment, and juice supernatant was found to be 31.5%, 27.7%, 26.2%, and 12.4%, respectively. The crude protein, cellulose, hemicellulose, lignin, and total phenolic content mainly accumulated in the press cake. The screw pressing concentrated the amino acids in the press cake and the juice sediment.

show abstract

Section: Introductionmentioning

confidence: 99%

CFD assisted investigation of mechanical juice extraction from cassava leaves and characterization of the products

Latif

Romuli

Barati

et al. 2020

Food Science & Nutrition

View full text Add to dashboard Cite

show abstract

“…1 and correlating with the physical experiment, was only obtained through the use of MIM feedstock generalized viscosity model presented in Fig. 3, taking into account the yield strength and softening of the suspension under shear (Cross model + yield stress as shown in the figure, which is called in the thixotechnologies, the Herschel-Bulkley model [5]). To simulate a feedstock flow, it was required to determine the viscosity at zero shear rate, the yield stress and the sensitivity over a wide range of shear rate values, for each material model.…”

Section: Introductionmentioning

confidence: 99%

Thixoforming of Hypereutectic AlSi12Cu2NiMg Automotive Pistons

Semenov

Ngo²,

Semenov

2019

SSP

View full text Add to dashboard Cite

The microstructure and mechanical properties of thixoformed AlSi12Cu2NiMg (AЛ25) aluminium alloy were investigated. Cooling slope method was employed in order to produce non-dendritic billets. Thixoforming process parameters were determined as follows: die temperature of 250 °C, billet temperature of 555 - 560 °C, punch velocity of 7 mm/s. Mechanical properties of automotive piston with ultimate strength of 309 MPa, yield strength of 274 MPa and elongation of 6.8 % in the T6 condition were obtained successfully, implying success of advantages of cooling slope method.

show abstract

“…The solid becomes purely viscoplastic close to the solidus temperature when the yield and hardening are negligible. Viscoplastic behavior is referred as the Ostwald-de-Waele law or more commonly the Norton-Hoff law [47].…”

Section: General Elasto-viscoplasticity At High Temperaturesmentioning

confidence: 99%

Norton-Hoff model for deformation of growing solid shell of thin slab casting in funnel-shape mold

Vakhrushev

Kharicha

et al. 2022

J. Iron Steel Res. Int.

View full text Add to dashboard Cite

A funnel-type mold is commonly used to provide necessary clearance for the submerged entry nozzle in the thin slab casting (TSC). The partially solidified shell is subjected to the mechanical deformations, which can lead to the defects formation and, as a results, to a breakout. Traditionally, the results of the flow simulation, performed by the finite volume method (FVM), are fed to the external package for the finite element analysis of stress and strain. A coupled model was assembled using “creeping solid” approach by blending the Norton-Hoff viscoplastic stress for the solidifying shell with the Newtonian viscous stress of the liquid melt. The FVM was used to combine both liquid and solid stress models within a single solver. The iterative procedure based on the improved both side diffusion method was introduced to treat the nonlinear relation between the viscoplastic stress and the strain rate. The modeled shell thickness was verified by previously published breakout measurements and the simulation results. Temperature distribution, obtained during the TSC simulation, dominantly corresponds to the viscoplastic range. Developed numerical approach is robust and has direct industrial application.

show abstract

Modeling of Semisolid Flow

Cited by 4 publications

References 59 publications

CFD assisted investigation of mechanical juice extraction from cassava leaves and characterization of the products

CFD assisted investigation of mechanical juice extraction from cassava leaves and characterization of the products

Thixoforming of Hypereutectic AlSi12Cu2NiMg Automotive Pistons

Norton-Hoff model for deformation of growing solid shell of thin slab casting in funnel-shape mold

Contact Info

Product

Resources

About