Results 31 to 40 of about 8,612,345 (201)

Vertical heat transport at infinite Prandtl number for micropolar fluid

Archives of Mechanics, 2020
We investigate the upper bound on the vertical heat transport in the fully 3D Rayleigh–Bénard convection problem at the infinite Prandtl number for a micropolar fluid.
M. Caggio, P. Kalita, G. Łukaszewicz, K.A. Mizerski   +3 more
doaj   +1 more source

Turbulent Transport in a Stratified Shear Flow

Journal of Marine Science and Engineering, 2023
Within the framework of the theory of unsteady turbulent flows in a stratified fluid, a new parameterization of the turbulent Prandtl number is proposed.
Daria Gladskikh, Lev Ostrovsky, Yuliya Troitskaya, Irina Soustova, Evgeny Mortikov   +4 more
doaj   +1 more source

Hydrothermal Instability Of Thermocapillary Convection In Large-Prandtl-Number Liquid Bridges Under Microgravity [PDF]

, 2008
Linear stability analysis was performed to study the mechanism of transition of thermocapillary convection in liquid bridges with liquid volume ratios ranging from 0.4 to 1.2, aspect ratio of 0.75 and Prandtl number of 100.
Chen, QS (reprint author), Chinese Acad Sci, Inst Mech, Natl Micrograv Lab, 15 Bei Si Huan Xi Rd, Beijing 100080, Peoples R China., 陈启生, 刘亚超   +2 more
core   +1 more source

Effect of Slip Conditions and Entropy Generation Analysis with an Effective Prandtl Number Model on a Nanofluid Flow through a Stretching Sheet

Entropy, 2017
This article describes the impact of slip conditions on nanofluid flow through a stretching sheet. Nanofluids are very helpful to enhance the convective heat transfer in a boundary layer flow.
Mohammad Mehdi Rashidi, Munawwar Ali Abbas   +1 more
doaj   +1 more source

Prediction of Energy Concentration during Microwave Heating with a Thermal Diffusion Dimensionless Number

Journal of Chemical Engineering of Japan
In a previous study, the correlation equation with a dimensionless number (As) of local microwave heating was proposed to solve the problem of a wider temperature distribution caused by heat generation within penetration depth during microwave heating ...
Yusuke Asakuma, Ryohei Yakata, Anita Hyde, Chi Phan   +3 more
doaj   +1 more source

Velocity field in a high prandtl number liquid bridge

MATEC Web of Conferences, 2015
A numerical model is developed to investigate the velocity fields of high prandtl number liquid bridge with surface deformation under microgravity. The Navier-Stokes equations coupled with the energy conservation equation are solved on a staggered grid ...
Yang Shuo, Liang Ruquan, He Jicheng
doaj   +1 more source

Development of New Turbulent Prandtl Number Models for Low- and Medium-Prandtl-Number Fluids via Multi-Gene Gene Expression Programming

Applied Sciences
The study of turbulent Prandtl number is important for turbulent flows with heat transfer. Despite its importance, no universal model exists that is able to capture its behavior for a range of molecular Prandtl numbers.
Burak Pehlivan, Özgür Ekici
doaj   +1 more source

Abriß der Strömungslehre

, 2017
Softcover, 17x24Mit der Berufung Ludwig Prandtls als Professor für Angewandte Mechanik wurde die kleine Universitätsstadt Göttingen im Jahr 1904 zur Wiege der modernen Strömungsmechanik und Aerodynamik.
Ludwig Prandtl, Prandtl, Ludwig
core   +1 more source

Prandtl Number Effects on Mixed Convection Between Rotating Coaxial Disks

International Journal of Rotating Machinery, 1996
Prandtl number characterizes the competition of viscous and thermal diffusion effects and, therefore, is an influential factor in thermal-fluid flows. In the present study, the Prandtl number effects on non-isothermal flow and heat transfer between two ...
Chyi-Yeou Soong
doaj   +1 more source

EFFECT OF PRANDTL NUMBER AND DIAMETER RATIO ON LAMINAR NATURAL CONVECTION FROM ISOTHERMAL HORIZONTAL CYLINDRICAL ANNULI

Diyala Journal of Engineering Sciences, 2016
A numerical investigation of transient, two-dimensional natural convection in horizontal isothermal cylindrical annuli is performed to investigate the Prandtl number and diameter ratio effect on flow and heat transfer characteristics.
Jasim Abdulateef
doaj   +1 more source