Results 21 to 30 of about 5,304 (193)

A numerical simulation on high prandtl number liquid bridge

MATEC Web of Conferences, 2015
The free surface characteristics of high prandtl number liquid bridge with dynamic deformation have been investigated under microgravity based on the Navier-Stokes equations coupled with the energy conservation equation on a staggered grid.
Yang Shuo, Liang Ruquan, He Jicheng
doaj   +1 more source

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

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

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

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

Numerical Study of MHD Hybrid Nanofluid Flow With Multiple Slip Effects Over a Variable Porous Stretching Surface

Asia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT This work discusses the thermal performance of magnetized hybrid nanofluid flow over a variable porous stretchable surface, emphasizing the underlying physical mechanisms governing heat and mass transfer. The Cattaneo–Christov flux model is used in place of Fourier's and Fick's laws to incorporate relaxation effects, ensuring a more realistic ...
Mounirah Areshi, Abdul Bariq, Salemah A. Almutlak, Fahad Maqbul Alamrani, Zehba Raizah, Anwar Saeed   +5 more
wiley   +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