Nader Mahinpey - Academia.edu (original) (raw)

Papers by Nader Mahinpey

Research paper thumbnail of Investigating the Application of Enzyme Carbonic Anhydrase for CO2 Sequestration Purposes

Industrial & Engineering Chemistry Research, 2007

Research paper thumbnail of The low temperature oxidation of Fosterton asphaltenes and its combustion kinetics

Fuel Processing Technology, 2011

Research paper thumbnail of Biological sequestration of carbon dioxide in geological formations

Chemical Engineering Research and Design, 2011

Research paper thumbnail of CFD simulation of gas–solid bubbling fluidized bed: A new method for adjusting drag law

The Canadian Journal of Chemical Engineering, 2009

In computational fluid dynamics modelling of gas–solid two phase flow, drag force is one of the d... more In computational fluid dynamics modelling of gas–solid two phase flow, drag force is one of the dominant mechanisms for interphase momentum transfer. Despite the profusion of drag models, none of the available drag functions gives accurate results in their own original form. In this work the drag correlations of Syamlal and O'Brien (Syamlal and O'Brien, Int. J. Multiphase Flow. 1988; 14(4):473–481), Gidaspow (Gidaspow, Appl. Mech. Rev. 1986; 39:1–23), Wen and Yu (Wen and Yu, Chem. Eng. Prog. Symp. Ser. 1966; 62(2):100–111), Arastoopour et al. (Arastoopour et al., Powder Technol. 1990; 62(2): 163–170), Gibilaro et al. (Gibilaro et al., Chem. Eng. Sci. 1985; 40:1817–1823), Di Felice (Di Felice, Int. J. Multiphase Flow. 1994; 20(1):153–159), Zhang‐Reese (Zhang and Reese, Chem. Eng. Sci. 2003; 58(8):1641–1644) and Hill et al. (Hill et al., J. Fluid Mech. 2001; 448:243–278) are reviewed using a multi‐fluid model of FLUENT V6.3.26 (FLUENT, 2007. Fluent 6.3 User's Guide, 23.5 E...

Research paper thumbnail of Simulation of biomass gasification in fluidized bed reactor using ASPEN PLUS

Biomass and Bioenergy, 2008

Research paper thumbnail of Electrochemical Mass Transfer Measurements with Glycerin Used To Reach High Schmidt Numbers

Industrial & Engineering Chemistry Research, 2005

Research paper thumbnail of Electrochemical mass transfer measurements in a Y-bifurcation model

The Canadian Journal of Chemical Engineering, 2000

ABSTRACT A novel technique was used to fabricate nickel flow models of a straight pipe and a Y-bi... more ABSTRACT A novel technique was used to fabricate nickel flow models of a straight pipe and a Y-bifurcation. These were used to obtain integral mass transfer coefficients by the electrochemical technique. For the straight pipe, good agreement was obtained with previously reported mass transfer correlations. The use of an upstream anode in addition to the downstream anode led to higher mass transfer at the cathode with laminar flow because of the additional near-wall ions produced by the upstream anode. With increasing Schmidt number, the effect of transition from laminar to turbulent flow on mass transfer was delayed to progressively higher Reynolds numbers because of the reduced mass transfer boundary layer thickness relative to the viscous sublayer. With the Y-bifurcation, possible flow separation and the formation of a new mass transfer boundary layer in the daughter branches significantly influence the mass transfer behaviour.On a employé une nouvelle technique pour mettre au point des modèles d'écoulement de nickel pour une tube et une bifurcation en Y. Ces modèles ont permis d'obtenir des coefficients de transfert de matière intégraux par la technique électrochimique. Pour la conduite droite, un bon accord a été obtenu avec des corrélations de transfert de matière présentées antérieurement. Le recours à une anode en amont en plus de l'anode en aval a provoqué un transfert de matière plus grand à la cathode en écoulement laminaire du fait des ions supplémentaires près des parois produits par l'anode amont. En augmentant le nombre de Schmidt, l'effet de transition entre l'écoulement laminaire et l'écoulement turbulent est retardé progressivement jusqu'à des nombres de Reynolds plus grands en raison de l'épaisseur réduite de la couche limite de transfert de matière par rapport à la sous-couche visqueuse. Avec la bifurcation en Y, une séparation possible des écoulements et la formation d'une nouvelle couche limite de transfert de matière dans les ramifications filles influencent considé-rablement le comportement du transfert de matière.

Research paper thumbnail of Investigating the Application of Enzyme Carbonic Anhydrase for CO2 Sequestration Purposes

Industrial & Engineering Chemistry Research, 2007

Research paper thumbnail of The low temperature oxidation of Fosterton asphaltenes and its combustion kinetics

Fuel Processing Technology, 2011

Research paper thumbnail of Biological sequestration of carbon dioxide in geological formations

Chemical Engineering Research and Design, 2011

Research paper thumbnail of CFD simulation of gas–solid bubbling fluidized bed: A new method for adjusting drag law

The Canadian Journal of Chemical Engineering, 2009

In computational fluid dynamics modelling of gas–solid two phase flow, drag force is one of the d... more In computational fluid dynamics modelling of gas–solid two phase flow, drag force is one of the dominant mechanisms for interphase momentum transfer. Despite the profusion of drag models, none of the available drag functions gives accurate results in their own original form. In this work the drag correlations of Syamlal and O'Brien (Syamlal and O'Brien, Int. J. Multiphase Flow. 1988; 14(4):473–481), Gidaspow (Gidaspow, Appl. Mech. Rev. 1986; 39:1–23), Wen and Yu (Wen and Yu, Chem. Eng. Prog. Symp. Ser. 1966; 62(2):100–111), Arastoopour et al. (Arastoopour et al., Powder Technol. 1990; 62(2): 163–170), Gibilaro et al. (Gibilaro et al., Chem. Eng. Sci. 1985; 40:1817–1823), Di Felice (Di Felice, Int. J. Multiphase Flow. 1994; 20(1):153–159), Zhang‐Reese (Zhang and Reese, Chem. Eng. Sci. 2003; 58(8):1641–1644) and Hill et al. (Hill et al., J. Fluid Mech. 2001; 448:243–278) are reviewed using a multi‐fluid model of FLUENT V6.3.26 (FLUENT, 2007. Fluent 6.3 User's Guide, 23.5 E...

Research paper thumbnail of Simulation of biomass gasification in fluidized bed reactor using ASPEN PLUS

Biomass and Bioenergy, 2008

Research paper thumbnail of Electrochemical Mass Transfer Measurements with Glycerin Used To Reach High Schmidt Numbers

Industrial & Engineering Chemistry Research, 2005

Research paper thumbnail of Electrochemical mass transfer measurements in a Y-bifurcation model

The Canadian Journal of Chemical Engineering, 2000

ABSTRACT A novel technique was used to fabricate nickel flow models of a straight pipe and a Y-bi... more ABSTRACT A novel technique was used to fabricate nickel flow models of a straight pipe and a Y-bifurcation. These were used to obtain integral mass transfer coefficients by the electrochemical technique. For the straight pipe, good agreement was obtained with previously reported mass transfer correlations. The use of an upstream anode in addition to the downstream anode led to higher mass transfer at the cathode with laminar flow because of the additional near-wall ions produced by the upstream anode. With increasing Schmidt number, the effect of transition from laminar to turbulent flow on mass transfer was delayed to progressively higher Reynolds numbers because of the reduced mass transfer boundary layer thickness relative to the viscous sublayer. With the Y-bifurcation, possible flow separation and the formation of a new mass transfer boundary layer in the daughter branches significantly influence the mass transfer behaviour.On a employé une nouvelle technique pour mettre au point des modèles d'écoulement de nickel pour une tube et une bifurcation en Y. Ces modèles ont permis d'obtenir des coefficients de transfert de matière intégraux par la technique électrochimique. Pour la conduite droite, un bon accord a été obtenu avec des corrélations de transfert de matière présentées antérieurement. Le recours à une anode en amont en plus de l'anode en aval a provoqué un transfert de matière plus grand à la cathode en écoulement laminaire du fait des ions supplémentaires près des parois produits par l'anode amont. En augmentant le nombre de Schmidt, l'effet de transition entre l'écoulement laminaire et l'écoulement turbulent est retardé progressivement jusqu'à des nombres de Reynolds plus grands en raison de l'épaisseur réduite de la couche limite de transfert de matière par rapport à la sous-couche visqueuse. Avec la bifurcation en Y, une séparation possible des écoulements et la formation d'une nouvelle couche limite de transfert de matière dans les ramifications filles influencent considé-rablement le comportement du transfert de matière.