Results 81 to 90 of about 1,327 (186)

Turbulent Prandtl number analysis of helium-xenon gas flow and heat transfer in the parallel channel

International Journal of Advanced Nuclear Reactor Design and Technology
The helium-xenon gas mixtures (15-40 g/mol) are used in various designs of small gas-cooled nuclear reactor systems with Prandtl number (Pr) from 0.2 to 0.3.
Shunqi Wang, Yu Ji, Jun Sun, Yuliang Sun
doaj   +1 more source

Development of a test task for coupled neutronic and thermal-hydraulic analysis of LFR fuel cell

Nuclear Engineering and Technology
In the absence of operational experience with Generation IV reactors and limited experimental data, developing test tasks is crucial for ensuring the safety and reliability of novel reactor designs.
Maksim Chubarov, Mikhail Zakharov, Ekaterina Bogdanova, Anton Smirnov, Deniel Ouen, Georgy Tikhomirov   +5 more
doaj   +1 more source

MEAN AND TURBULENT THERMAL FIELDS DUE TO FILM COOLING VIA AN EDDY HEAT DIFFUSIVITY CLOSURE

TASK Quarterly, 2006
The two-equation level of turbulent heat flux modelling is considered for application in film cooling instead of the turbulent Prandtl number concept.
MICHAŁ KARCZ
doaj  

The turbulent boundary layer with variable Prandtl number

, 1955
The general theory for the solution of the energy equation for laminar boundary layers with variable Prandtl number is applied directly to the turbulent case in order to extend the von Karman analogy between heat transfer and fluid friction to include a turbulence Prandtl number other than unity and a realistic shear distribution other than constant ...
openaire   +2 more sources

Implementation of algebraic turbulent heat flux into Reynolds stress transport model and simulation of crossing tube bundles

Nuclear Engineering and Technology
Lead bismuth eutectic (LBE) is an excellent coolant for fast reactors, owing to its high boiling point and high thermal conductivity. Turbulent heat transfer is a complex phenomenon, and the numerical heat transfer of LBE is constrained by its extremely ...
Han Liu, Hao Sun, Binghuo Yan, Jun Chen, Zhikang Lin   +4 more
doaj   +1 more source

2-D NUMERICAL STUDY OF HEAT TRANSFER CROSSFLOW ON SINGLE CIRCULAR CYLINDER AND TANDEM WITH TURBULENT VISCOSITY MODIFICATION

Ethos: Jurnal Penelitian dan Pengabdian kepada Masyarakat, 2017
The  crossflow in cylinder marked by the phenomenon of stagnation point, shear layer separation and wake formation. Characteristics of flow regimes can be unsteady laminar flow (the formation of vortex shedding regime), transitional (regime with the ...
Arif Kurniawan
doaj  

A New Model for Prediction of Heat Eddy Diffusivity in Pipe Expansion Turbulent Flows [PDF]

Iranian Journal of Chemical Engineering, 2005
A new model to calculate heat eddy diffusivity in separating and reattaching flows based on modification of constant Prt is proposed. This modification is made using an empirical correlation between maximum Nusselt number and entrance Reynolds number ...
doaj  

Dynamic confinement controls the porous-to-free convection transition. [PDF]

Proc Natl Acad Sci U S A
Schwendener DM, Noir J, Latt J, Coreixas C, Kong XZ.   +4 more
europepmc   +1 more source

On the absence of the ultimate regime in turbulent thermal convection. [PDF]

Proc Natl Acad Sci U S A
Tiwari H, Sharma L, Verma MK.
europepmc   +1 more source

Numerical Study of Entropy Production in a Fluidic Oscillator. [PDF]

Entropy (Basel)
Dávalos JO, Cornejo-Monroy D, Villanueva-Montellano A, Ortiz-Muñoz D, Luviano-Cruz D.   +4 more
europepmc   +1 more source