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A. Nakayama
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Journal Articles

An Analytical and Numerical Estimation of the Effective Thermal Conductivity of Complex Metal Frame Core Structures

X. Bai, A. Nakayama
Journal: ASME Journal of Heat and Mass Transfer
Publisher: ASME
Article Type: Technical Briefs
J. Heat Mass Transfer. February 2019, 141(2): 024504.
Paper No: HT-18-1673
https://doi.org/10.1115/1.4041957
Published Online: December 13, 2018
View Article titled, An Analytical and Numerical Estimation of the Effective Thermal Conductivity of Complex Metal Frame Core Structures
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Topics: Metals, Thermal conductivity, Trusses (Building), Rods, Metal foams
Journal Articles

A General Expression for the Stagnant Thermal Conductivity of Stochastic and Periodic Structures

X. Bai, C. Hasan, M. Mobedi, A. Nakayama
Journal: ASME Journal of Heat and Mass Transfer
Publisher: ASME
Article Type: Research-Article
J. Heat Mass Transfer. May 2018, 140(5): 052001.
Paper No: HT-17-1216
https://doi.org/10.1115/1.4038449
Published Online: January 17, 2018
View Article titled, A General Expression for the Stagnant Thermal Conductivity of Stochastic and Periodic Structures
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Topics: Periodic structures, Rods, Thermal conductivity
Journal Articles

Steady Finite-Amplitude Rayleigh–Bénard Convection in Nanoliquids Using a Two-Phase Model: Theoretical Answer to the Phenomenon of Enhanced Heat Transfer

P. G. Siddheshwar, C. Kanchana, Y. Kakimoto, A. Nakayama
Journal: ASME Journal of Heat and Mass Transfer
Publisher: ASME
Article Type: Research-Article
J. Heat Mass Transfer. January 2017, 139(1): 012402.
Paper No: HT-15-1330
https://doi.org/10.1115/1.4034484
Published Online: September 13, 2016
View Article titled, Steady Finite-Amplitude Rayleigh–Bénard Convection in Nanoliquids Using a Two-Phase Model: Theoretical Answer to the Phenomenon of Enhanced Heat Transfer
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Topics: Convection, Heat, Heat transfer, Nanoparticles, Stability, Water, Boundary-value problems
Journal Articles

On the Anomalous Convective Heat Transfer Enhancement in Nanofluids: A Theoretical Answer to the Nanofluids Controversy

C. Yang, W. Li, Y. Sano, M. Mochizuki, A. Nakayama
Journal: ASME Journal of Heat and Mass Transfer
Publisher: ASME
Article Type: Technical Briefs
J. Heat Mass Transfer. May 2013, 135(5): 054504.
Paper No: HT-12-1270
https://doi.org/10.1115/1.4023539
Published Online: April 11, 2013
View Article titled, On the Anomalous Convective Heat Transfer Enhancement in Nanofluids: A Theoretical Answer to the Nanofluids Controversy
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Topics: Heat transfer, Nanofluids, Nanoparticles, Convection, Fluids
Journal Articles

A Local Thermal Nonequilibrium Analysis of Silicon Carbide Ceramic Foam as a Solar Volumetric Receiver

Y. Sano, S. Iwase, A. Nakayama
Journal: Journal of Solar Energy Engineering
Publisher: ASME
Article Type: Research Papers
J. Sol. Energy Eng. May 2012, 134(2): 021006.
https://doi.org/10.1115/1.4005758
Published Online: February 27, 2012
View Article titled, A Local Thermal Nonequilibrium Analysis of Silicon Carbide Ceramic Foam as a Solar Volumetric Receiver
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Topics: Radiation (Physics), Silicon carbide ceramics, Solar energy, Temperature, Heat transfer, Pressure, Ceramic foam, Porous materials, Fluids, Approximation
Journal Articles

Exact Solutions for a Thermal Nonequilibrium Model of Fluid Saturated Porous Media Based on an Effective Porosity

F. Kuwahara, C. Yang, K. Ando, A. Nakayama
Journal: ASME Journal of Heat and Mass Transfer
Publisher: ASME
Article Type: Research Papers
J. Heat Mass Transfer. November 2011, 133(11): 112602.
https://doi.org/10.1115/1.4004354
Published Online: September 19, 2011
View Article titled, Exact Solutions for a Thermal Nonequilibrium Model of Fluid Saturated Porous Media Based on an Effective Porosity
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Topics: Convection, Fluids, Heat flux, Metal foams, Porosity, Porous materials, Thermal conductivity, Flow (Dynamics), Thermal equilibrium, Aluminum
Journal Articles

A General Macroscopic Turbulence Model for Flows in Packed Beds, Channels, Pipes, and Rod Bundles

A. Nakayama, F. Kuwahara
Journal: Journal of Fluids Engineering
Publisher: ASME
Article Type: Research Papers
J. Fluids Eng. October 2008, 130(10): 101205.
https://doi.org/10.1115/1.2969461
Published Online: September 4, 2008
View Article titled, A General Macroscopic Turbulence Model for Flows in Packed Beds, Channels, Pipes, and Rod Bundles
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Topics: Flow (Dynamics), Pipes, Turbulence, Kinetic energy, Porous materials, Fuel rods
Journal Articles

Closure to Discussion: “A Numerical Study of Thermal Dispersion in Porous Media” (Kuwahara, F., Nakayama, A., and Koyama, H., 1996, ASME J. Heat Transfer, 118 , pp. 756–761) and “Numerical Determination of Thermal Dispersion Coefficients Using a Periodic Porous Structure” (Kuwahara, F., and Nakayama, A., 1999, ASME J. Heat Transfer, 121 , pp. 160–163)

A. Nakayama, F. Kuwahara
Journal: ASME Journal of Heat and Mass Transfer
Publisher: ASME
Article Type: Discussions
J. Heat Mass Transfer. December 2004, 126(6): 1062.
https://doi.org/10.1115/1.1833374
Published Online: January 26, 2005
View Article titled, Closure to Discussion: “A Numerical Study of Thermal Dispersion in Porous Media” (Kuwahara, F., Nakayama, A., and Koyama, H., 1996, ASME J. Heat Transfer, 118 , pp. 756–761) and “Numerical Determination of Thermal Dispersion Coefficients Using a Periodic Porous Structure” (Kuwahara, F., and Nakayama, A., 1999, ASME J. Heat Transfer, 121 , pp. 160–163)
Open the PDF for Closure to Discussion: “A Numerical Study of Thermal Dispersion in Porous Media” (Kuwahara, F., Nakayama, A., and Koyama, H., 1996, ASME J. Heat Transfer, 118 , pp. 756–761) and “Numerical Determination of Thermal Dispersion Coefficients Using a Periodic Porous Structure” (Kuwahara, F., and Nakayama, A., 1999, ASME J. Heat Transfer, 121 , pp. 160–163) in another window
Topics: Heat transfer, Porous materials, Dispersion relations, Flow (Dynamics)
Journal Articles

Heat and Fluid Flow Within an Anisotropic Porous Medium

A. Nakayama, Professor, F. Kuwahara, Associate Professor, T. Umemoto, Graduate Student, T. Hayashi, Graduate Student
Journal: ASME Journal of Heat and Mass Transfer
Publisher: ASME
Article Type: Technical Papers
J. Heat Mass Transfer. August 2002, 124(4): 746–753.
https://doi.org/10.1115/1.1481355
Published Online: July 16, 2002
View Article titled, Heat and Fluid Flow Within an Anisotropic Porous Medium
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Topics: Anisotropy, Flow (Dynamics), Fluid dynamics, Heat, Heat transfer, Heat transfer coefficients, Permeability, Porous materials, Pressure gradient, Reynolds number
Journal Articles

A Macroscopic Turbulence Model for Flow in a Porous Medium

A. Nakayama, F. Kuwahara
Journal: Journal of Fluids Engineering
Publisher: ASME
Article Type: Research Papers
J. Fluids Eng. June 1999, 121(2): 427–433.
https://doi.org/10.1115/1.2822227
Published Online: June 1, 1999
View Article titled, A Macroscopic Turbulence Model for Flow in a Porous Medium
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Topics: Flow (Dynamics), Porous materials, Turbulence, Kinetic energy, Energy dissipation, Computation, Heat transfer, Rods
Journal Articles

Numerical Determination of Thermal Dispersion Coefficients Using a Periodic Porous Structure

F. Kuwahara, A. Nakayama
Journal: ASME Journal of Heat and Mass Transfer
Publisher: ASME
Article Type: Technical Briefs
J. Heat Mass Transfer. February 1999, 121(1): 160–163.
https://doi.org/10.1115/1.2825930
Published Online: February 1, 1999
View Article titled, Numerical Determination of Thermal Dispersion Coefficients Using a Periodic Porous Structure
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Topics: Forced convection, Porous materials
Journal Articles

A Numerical Study of Thermal Dispersion in Porous Media

F. Kuwahara, A. Nakayama, H. Koyama
Journal: ASME Journal of Heat and Mass Transfer
Publisher: ASME
Article Type: Research Papers
J. Heat Mass Transfer. August 1996, 118(3): 756–761.
https://doi.org/10.1115/1.2822696
Published Online: August 1, 1996
View Article titled, A Numerical Study of Thermal Dispersion in Porous Media
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Topics: Porous materials
Journal Articles

Mean Pressure Distribution and Drag Coefficient of Wire-Wrapped Cylinders

E. E. Yang, H. R. Rahai, A. Nakayama
Journal: Journal of Fluids Engineering
Publisher: ASME
Article Type: Technical Briefs
J. Fluids Eng. June 1994, 116(2): 376–378.
https://doi.org/10.1115/1.2910285
Published Online: June 1, 1994
View Article titled, Mean Pressure Distribution and Drag Coefficient of Wire-Wrapped Cylinders
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Topics: Cylinders, Drag (Fluid dynamics), Pressure, Wire
Journal Articles

A Unified Theory for Non-Darcy Free, Forced, and Mixed Convection Problems Associated With a Horizontal Line Heat Source in a Porous Medium

A. Nakayama
Journal: ASME Journal of Heat and Mass Transfer
Publisher: ASME
Article Type: Technical Briefs
J. Heat Mass Transfer. May 1994, 116(2): 508–513.
https://doi.org/10.1115/1.2911431
Published Online: May 1, 1994
View Article titled, A Unified Theory for Non-Darcy Free, Forced, and Mixed Convection Problems Associated With a Horizontal Line Heat Source in a Porous Medium
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Topics: Heat, Mixed convection, Porous materials, Unified field theories, Natural convection
Journal Articles

A Similarity Solution for Free Convection From a Point Heat Source Embedded in a Non-Newtonian Fluid-Saturated Porous Medium

A. Nakayama
Journal: ASME Journal of Heat and Mass Transfer
Publisher: ASME
Article Type: Technical Briefs
J. Heat Mass Transfer. May 1993, 115(2): 510–513.
https://doi.org/10.1115/1.2910715
Published Online: May 1, 1993
View Article titled, A Similarity Solution for Free Convection From a Point Heat Source Embedded in a Non-Newtonian Fluid-Saturated Porous Medium
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Topics: Fluids, Heat, Natural convection, Porous materials, Non-Newtonian flow
Journal Articles

Non-Darcy Couette Flow in a Porous Medium Filled With an Inelastic Non-Newtonian Fluid

A. Nakayama
Journal: Journal of Fluids Engineering
Publisher: ASME
Article Type: Research Papers
J. Fluids Eng. December 1992, 114(4): 642–647.
https://doi.org/10.1115/1.2910080
Published Online: December 1, 1992
View Article titled, Non-Darcy Couette Flow in a Porous Medium Filled With an Inelastic Non-Newtonian Fluid
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Topics: Flow (Dynamics), Non-Newtonian fluids, Porous materials, Inertia (Mechanics), Momentum, Shear stress, Fluids, Friction, Viscosity
Journal Articles

Turbulent Free Convection Heat Transfer to Drag-Reducing Fluids From Arbitrary Geometric Configurations

A. Nakayama, A. V. Shenoy
Journal: ASME Journal of Heat and Mass Transfer
Publisher: ASME
Article Type: Research Papers
J. Heat Mass Transfer. February 1992, 114(1): 127–134.
https://doi.org/10.1115/1.2911237
Published Online: February 1, 1992
View Article titled, Turbulent Free Convection Heat Transfer to Drag-Reducing Fluids From Arbitrary Geometric Configurations
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Topics: Drag (Fluid dynamics), Fluids, Heat transfer, Natural convection, Turbulence
Journal Articles

Effect of Tooth Contact and Gear Dimensions on Transmission Errors of Loaded Hypoid Gears

M. Sugimoto, N. Maruyama, A. Nakayama, N. Hitomi
Journal: Journal of Mechanical Design
Publisher: ASME
Article Type: Research Papers
J. Mech. Des. June 1991, 113(2): 182–187.
https://doi.org/10.1115/1.2912767
Published Online: June 1, 1991
View Article titled, Effect of Tooth Contact and Gear Dimensions on Transmission Errors of Loaded Hypoid Gears
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Topics: Dimensions, Errors, Gears, Spiral bevel gears, Manufacturing, Stress, Design, Gear teeth
Journal Articles

Forchheimer Free Convection Over a Nonisothermal Body of Arbitrary Shape in a Saturated Porous Medium

A. Nakayama, T. Kokudai, H. Koyama
Journal: ASME Journal of Heat and Mass Transfer
Publisher: ASME
Article Type: Technical Briefs
J. Heat Mass Transfer. May 1990, 112(2): 511–515.
https://doi.org/10.1115/1.2910413
Published Online: May 1, 1990
View Article titled, Forchheimer Free Convection Over a Nonisothermal Body of Arbitrary Shape in a Saturated Porous Medium
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Topics: Natural convection, Porous materials, Shapes, Heat transfer
Journal Articles

Non-Darcian Boundary Layer Flow and Forced Convective Heat Transfer Over a Flat Plate in a Fluid-Saturated Porous Medium

A. Nakayama, T. Kokudai, H. Koyama
Journal: ASME Journal of Heat and Mass Transfer
Publisher: ASME
Article Type: Research Papers
J. Heat Mass Transfer. February 1990, 112(1): 157–162.
https://doi.org/10.1115/1.2910338
Published Online: February 1, 1990
View Article titled, Non-Darcian Boundary Layer Flow and Forced Convective Heat Transfer Over a Flat Plate in a Fluid-Saturated Porous Medium
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Topics: Boundary layers, Convection, Flat plates, Flow (Dynamics), Fluids, Porous materials