Evaluation of three different radiative transfer equation solvers for combined conduction and radiation heat transfer

Sun, Yujia; Zhang, Xiaobing; Howell, John R.

doi:10.1016/j.jqsrt.2016.07.024

Cited by 15 publications

(4 citation statements)

References 41 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The computational grids in FVM for the radiative heat transfer are correspondent with the FVM grids that are utilized in the solution of the momentum and energy equations [18]. Furthermore, in FVM, the ray effect is considerably less due to fully conservative form of the equations [19][20][21][22]. Recently, problems of conduction-radiation heat transfer were solved using FVM coupled with LBM [23,24].…”

Section: Introductionmentioning

confidence: 99%

Investigation of transient conduction–radiation heat transfer in a square cavity using combination of LBM and FVM

Keshtkar

Talebizadehsardari

2018

Sādhanā

View full text Add to dashboard Cite

In this paper, the effect of surface radiation in a square cavity containing an absorbing, emitting and scattering medium with four heated boundaries is investigated, numerically. Lattice Boltzmann method (LBM) is used to solve the energy equation of a transient conduction-radiation heat transfer problem and the radiative heat transfer equation is solved using finite-volume method (FVM). In this work, two different heat flux boundary conditions are considered for the east wall: a uniform and a sinusoidally varying heat flux profile. The results show that as the value of conduction-radiation decreases, the dimensionless temperature in the medium increases. Also, it is clarified that, for an arbitrary value of the conduction-radiation parameter, the temperature decreases with decreasing scattering albedo. It is observed that when the boundaries reflect more, a higher temperature is achieved in the medium and on boundaries.

show abstract

Section: Introductionmentioning

confidence: 99%

Investigation of transient conduction–radiation heat transfer in a square cavity using combination of LBM and FVM

Keshtkar

Talebizadehsardari

2018

Sādhanā

View full text Add to dashboard Cite

show abstract

“…S r is the thermal radiation source term. This study will use the P1 radiation model to consider the radiative heat exchange between the solid and the external space [24]:…”

Section: Simulation Calculation Basics 41 Control Equationsmentioning

confidence: 99%

Effects of Heat Reflux on Two-Phase Flow Characteristics in a Capillary of the ADN-Based Thruster

Yan

Liu²,

et al. 2022

Micromachines

View full text Add to dashboard Cite

During the working process of the ADN-based thruster, continuously, heat generated by the chemical reaction in the combustion chamber will transfer along the upstream capillary, the propellant in the capillary continuously absorbs heat under the effect of heat transfer from the wall and undergoes a phase change when the saturation temperature is reached. In this study, effects of the downstream heating temperature (623 K to 923 K) on mass flow rate and pressure change in the capillary were investigated based on the established test platform. Simultaneously, the VOF (volume of fraction) model, and the Lee phase transition model coupled with the Navier–Stokes method was utilized to simulate the spatial distribution of the gas-liquid propellant in the capillary. The results show that the ADN-based propellant firstly formed bubbles on the inner wall surface near the exit of the capillary, and these vapor bubbles moved and grew upstream along the capillary. Due to the cooling effect of the ADN-based propellant inflow, the temperature distribution of the front chamber and capillary gradually reached equilibrium. Bubbles were constantly generated in the capillary, and as the heat reflux intensified, the total volume of bubbles in the capillary continued increasing. Single-phase flow, annular flow, wave flow, and segment plug flow appeared sequentially along the axial direction of the capillary, and the proportion of gas phase volume fraction at the capillary outlet section gradually increased.

show abstract

“…Many numerical methods have been developed to solve radiative transfer equation, such as Monte Carlo (MCM), zonal, Spherical Harmonics (P N ), discrete ordinates (DOM), discrete transfer (DTM), meshless, finite element (FEM) and finite volume (FVM). 14) Sun et al 15,16) compared the performance of the P N method, the simplified P N method (SP N ), FVM, lattice Boltzmann method (LBM) and the DOM to solve transient conduction and radiation heat transfer problems. According to their research, FVM is recommended for optical thickness τ ≤5, and P1 for τ = 10, 50.…”

Section: Introductionmentioning

confidence: 99%

Optimization of Heating Process for Bearing Rings in a Vacuum Furnace Based on Numerical Analysis

Liu¹,

Li²,

Wang³

et al. 2021

ISIJ Int.

View full text Add to dashboard Cite

With the aid of a FEM software COMSOL Multiphysics the transient radiation heat transfer model has been established to simulate the vacuum heating process of M50NiL bearing rings. The heating curves obtained from the numerical model compare well with the experimental data. Based on the model, effects of heating process parameters on the radiative heat transfer in a vacuum furnace are investigated. The simulation results indicate that reducing heating rate or increasing preheating temperature can improve the temperature uniformity, thereby reducing the soaking time of bearing rings. Accordingly, an optimized heating process with high preheating temperature and low heating rate is proposed. The new process cuts the soaking time by a quarter and reduces the proportion of grade 3 and coarser grains from 12% to 2%.

show abstract

Evaluation of three different radiative transfer equation solvers for combined conduction and radiation heat transfer

Cited by 15 publications

References 41 publications

Investigation of transient conduction–radiation heat transfer in a square cavity using combination of LBM and FVM

Investigation of transient conduction–radiation heat transfer in a square cavity using combination of LBM and FVM

Effects of Heat Reflux on Two-Phase Flow Characteristics in a Capillary of the ADN-Based Thruster

Optimization of Heating Process for Bearing Rings in a Vacuum Furnace Based on Numerical Analysis

Contact Info

Product

Resources

About