The Experts below are selected from a list of 285 Experts worldwide ranked by ideXlab platform
Ehsan Roohi - One of the best experts on this subject based on the ideXlab platform.
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hydrodynamic behaviour of micro nanoscale poiseuille flow under Thermal Creep condition
Applied Physics Letters, 2013Co-Authors: Hassan Akhlaghi, Mojtaba Balaj, Ehsan RoohiAbstract:Current work investigates the effect of Thermal Creep on the behavior of rarefied gas flow through micro/nanochannels using the direct simulation Monte Carlo method. Thermal Creep effects are studied on velocity profiles, streamwise velocity and pressure, and Thermal mass flow rate. The strength of Thermal Creep is examined at different Knudsen number, channel pressure ratio, and bulk temperature. The Thermal mass flow rate variation is investigated over a wide range of flow rarefaction from the slip to free molecular regime.
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Hydrodynamic behaviour of micro/nanoscale Poiseuille flow under Thermal Creep condition
Applied Physics Letters, 2013Co-Authors: Hassan Akhlaghi, Mojtaba Balaj, Ehsan RoohiAbstract:Current work investigates the effect of Thermal Creep on the behavior of rarefied gas flow through micro/nanochannels using the direct simulation Monte Carlo method. Thermal Creep effects are studied on velocity profiles, streamwise velocity and pressure, and Thermal mass flow rate. The strength of Thermal Creep is examined at different Knudsen number, channel pressure ratio, and bulk temperature. The Thermal mass flow rate variation is investigated over a wide range of flow rarefaction from the slip to free molecular regime.
Hassan Akhlaghi - One of the best experts on this subject based on the ideXlab platform.
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hydrodynamic behaviour of micro nanoscale poiseuille flow under Thermal Creep condition
Applied Physics Letters, 2013Co-Authors: Hassan Akhlaghi, Mojtaba Balaj, Ehsan RoohiAbstract:Current work investigates the effect of Thermal Creep on the behavior of rarefied gas flow through micro/nanochannels using the direct simulation Monte Carlo method. Thermal Creep effects are studied on velocity profiles, streamwise velocity and pressure, and Thermal mass flow rate. The strength of Thermal Creep is examined at different Knudsen number, channel pressure ratio, and bulk temperature. The Thermal mass flow rate variation is investigated over a wide range of flow rarefaction from the slip to free molecular regime.
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Hydrodynamic behaviour of micro/nanoscale Poiseuille flow under Thermal Creep condition
Applied Physics Letters, 2013Co-Authors: Hassan Akhlaghi, Mojtaba Balaj, Ehsan RoohiAbstract:Current work investigates the effect of Thermal Creep on the behavior of rarefied gas flow through micro/nanochannels using the direct simulation Monte Carlo method. Thermal Creep effects are studied on velocity profiles, streamwise velocity and pressure, and Thermal mass flow rate. The strength of Thermal Creep is examined at different Knudsen number, channel pressure ratio, and bulk temperature. The Thermal mass flow rate variation is investigated over a wide range of flow rarefaction from the slip to free molecular regime.
M R Daymond - One of the best experts on this subject based on the ideXlab platform.
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Thermal Creep behavior in heat treated and modified textured zr excel pressure tube material
Materials Science and Engineering A-structural Materials Properties Microstructure and Processing, 2017Co-Authors: Kazi F Ahmmed, Levente Balogh, Yasir Idrees, David Kerr, M R DaymondAbstract:Abstract Thermal Creep properties of Zr-Excel alloy (Zr-3.5 wt% Sn-0.8 wt% Nb-0.8 wt% Mo) have been investigated in this study. The limits of existing experimental data on the current material and the search for more isotropic properties in Pressure Tube (PT) material motivates the current study. Heat-treatment on Excel PT materials leads to significant microstructural changes, where a strong texture of the As-Received (ASR) PT materials has been altered to a different degree of randomness at various solution temperatures. Microstructural alteration through heat-treatments should have an influence on the Thermal Creep behavior of the current material. It is observed that at a relatively high Creep test temperature (>300 °C), steady-state Creep rate of both ASR and heat-treated materials depends on the applied stress in a power law fashion and approaches stress exponent value of ~3. However, at a relatively low test temperature, n showed a high value in all treatments. The activation energy ( Q ) for the Creep mechanism has been found to be microstructure-dependent. The ASR material has a Q value of ~73 to ~114 kJ/mol at the applied test temperature range (150–350 °C). However, martensitic structure formation and other microscopic changes (dislocation structures and elemental segregation) caused significant increase in Q values up to ~325 kJ/mol in the heat-treated materials. A significant decrease has been observed in Creep anisotropy in the WQ-895 treatment for which texture has been moderately randomized.
C. E. Siewert - One of the best experts on this subject based on the ideXlab platform.
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Poiseuille and Thermal-Creep Flow in a Cylindrical Tube
Journal of Computational Physics, 2000Co-Authors: C. E. SiewertAbstract:A version of the discrete-ordinates method is used to solve, for the case of flow in a cylindrical tube, the classical Poiseuille and Thermal-Creep problems based on the Bhatnagar, Gross, and Krook model in the theory of rarefied-gas dynamics. In addition to the development of a discrete-ordinates solution that is valid for a wide range of the Knudsen number, the solution is evaluated numerically for selected cases to yield results, thought to be correct to many significant figures, for the slip velocities, the macroscopic velocity profiles, and the flow rates.
Mauricio Giraldo - One of the best experts on this subject based on the ideXlab platform.
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A boundary integral equation formulation for the Thermal Creep gas flow at finite Peclet numbers
International Journal of Mechanical Sciences, 2014Co-Authors: César Nieto, Henry Power, Mauricio GiraldoAbstract:Abstract The integral equation formulation developed previously by the authors to study isoThermal micro flows under shear slip boundary condition is extended in this work to consider the case of non-isoThermal micro gas flows with Thermal Creep effects at finite Peclet numbers. The effect of Thermal Creep over the flow patterns with and without considering the effect of shear slip is investigated in detail using a boundary element method. In this work the boundary integral approaches for both fluid velocity and temperatures fields are used to solve the problem of shear-driven cavity flow at finite Peclet number. This is obtained by considering the diffusive-convective heat equation using the Dual Reciprocity Method to transform the corresponding volume integral of the convective terms into equivalent surface integrals.
