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Hygrothermal Behavior of Earth-Based Materials: Experimental and Numerical Analysis [PDF]

MATEC Web of Conferences, 2020
Bio-based building materials such as earth bricks are attracting renewed interest throughout the world due to their thermal and environmental properties. In this work, a numerical study of the hygrothermal behavior of building walls consist of compressed
Saidi Meriem, Soukaina Cherif Amel, Sediki Ezeddine, Zeghmati Belkacem   +3 more
doaj   +1 more source

Modeling the process of mixing the coolant in the lower section and pressure mixing chamber of VVER-1200 (V-491)

Весці Нацыянальнай акадэміі навук Беларусі: Серыя фізіка-тэхнічных навук, 2022
The most representative accident scenario is determined and a physical and mathematical model is developed for studying the mixing of non-isothermal coolant flows in the structural elements of the V-491 reactor facility (VVER-1200), in which the motion ...
A. D. Chorny, S. D. Mikheenko, P. A. Speransky, A. L. Mostovenko, A. I. Krysin, T. A. Baranova, Yu. V. Zhukova, I. G. Kukharchuk   +7 more
doaj   +1 more source

Evaluation of radiation heat transfer in porous medial: Application for a pebble bed modular reactor cooled by CO2 gas [PDF]

Nuclear Technology and Radiation Protection, 2013
This work analyses the contribution of radiation heat transfer in the cooling of a pebble bed modular reactor. The mathematical model, developed for a porous medium, is based on a set of equations applied to an annular geometry.
Sidi-Ali Kamel, Oukil Khaled, Hassani Tinhinane, Amri Yasmina, Alem Abdelmoumane   +4 more
doaj   +1 more source

CALCULATION OF REDUCTION IN HEAT TRANSFER BETWEEN ENGINE AND VEHICLE BODY ROOM USING RADIATION SHIELDS WITH TEMPERATURE- DEPENDENT EMISSIVITY [PDF]

مجله مدل سازی در مهندسی, 2011
In this study, has been investigated the rate of heat transfer between engine and vehicle body room in steady state using analytical methods and the concept of net radiation heat transfer and energybalance equation at the boundaries. Also, calculated the
فاطمه Jabbari, سیف الله Sadodin   +1 more
doaj   +1 more source

Numerical simulation of the gas flow with radiation and heat transfer [PDF]

EPJ Web of Conferences, 2022
In this article we focus on the heating of the solid body placed in the vicinity of the intense heat source. We simulate the heat transfer caused by the direct contact with surrounding heated gas. Furthermore it is necessary to take into account the heat
Česenek Jan, Kyncl Martin, Pelant Jaroslav   +2 more
doaj   +1 more source

Dynamic characteristics of convection heat and radiation heat on building surfaces under cyclic heat flow

Science Progress, 2022
The dynamic heat transfer of building surfaces has thermal conduction, convection and radiation at the same time. It is the basis of building thermal environment simulation, air conditioning load calculation, building energy analysis and air conditioning
Liugen Lv, Yi Xiang, Zhipan Gu, Chen Huang   +3 more
doaj   +1 more source

Investigation of the forced convection heat transfer in the presence of radiation in metal foams using HPM [PDF]

مجله مدل سازی در مهندسی, 2016
Forced convection heat transfer in metal foams in the presence of radiation heat transfer is studied using the homotopy perturbation method (HPM). To see wall effects, Darcy-Brinkman model for the flow in porous media is used.
Maziar Dehghan, Yousef Rahmani, Seyfolah Saedodin, Mohammad Sadegh Valipour, Davood Domiri Ganji   +4 more
doaj   +1 more source

Natural Convection and Radiation in Enclosures with Semi-transparent Medium: Conjugate CFD Analysis [PDF]

Journal of Applied Fluid Mechanics, 2022
Radiation heat transfer is often ignored in several studies as it has few significant effects in some cases. However, when using a participating fluid, where the molecules interact with the radiative spectrum, these effects cannot be disregarded.
E. G. Barbosa, M. E. V. Araujo, M. A. Martins, E. G. Barbosa   +3 more
doaj   +1 more source

Coupled Heat and Flow Analysis Inside a Diversion-Type Gas Heater With Vertical Guide Plate Structure

Frontiers in Energy Research, 2022
In the natural gas heating process, the cylinder-type heater using water as an intermediate heating medium is the most extensively used. The heat exchange rate between the heating medium water and the fire and gas tubes in the great-capacity cylinder ...
Yun Guo, Xuning Zhang, Zhongwei Zhou
doaj   +1 more source

Research on the dynamic heat transfer of stratified air conditioning zone building surfaces in large space scale rig based on low supply-middle return

Science Progress, 2020
Radiation heat and convection heat exist on stratified air conditioning zone building surfaces in large space, and they have significant impact on cooling load calculation and thermal comfort analysis.
Liugen Lv, Yiying Luo, Yi Xiang, Xiangjiang Zhou, Chen Huang   +4 more
doaj   +1 more source