A three-dimensional simulation of transient natural convection in a triangular cavity

被引：28

作者：

Cui, Huimin ^{[1
]}

Xu, Feng ^{[1
]}

Saha, Suvash C. ^{[2
]}

机构：

[1] Beijing Jiaotong Univ, Sch Civil Engn, Beijing 100044, Peoples R China

[2] Queensland Univ Technol, Sch Chem Phys & Mech Engn, Brisbane, Qld 4001, Australia

来源：

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER | 2015年 / 85卷

基金：

中国国家自然科学基金;

关键词：

3D flow structure; Transient natural convection; Triangular cavity; DIFFERENTIALLY HEATED CAVITY; DAY BOUNDARY-CONDITIONS; NUMERICAL-SIMULATION; CROSS-SECTION; AIR-FLOWS; ENCLOSURES; SIDEWALL; SUBJECT; SPACES; ROOF;

D O I：

10.1016/j.ijheatmasstransfer.2015.02.055

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The three-dimensional (3D) numerical simulation of natural convection in a triangular cavity with the top cooling and the bottom heating is performed and compared with the previous experiment. The numerical results show that the development of natural convection in the cavity following an initially isothermal and stationary state may be classified into three stages: an initial stage, a transitional stage and a quasi-steady stage, which is consistent with the experimental result. Natural convection flows in each of the stages, particularly the 3D flow structure such as longitudinal rolls, are described. Further, the regimes of transient natural convection are discussed using a simple scaling analysis and the scaling relations obtained are validated by the present numerical results. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：1012 / 1022

页数：11

共 50 条

[31] Three-dimensional natural convection in spherical annuli
Scurtu, N.
Futterer, B.
Egbers, Ch.
15TH INTERNATIONAL COUETTE-TAYLOR WORKSHOP, 2008, 137
[32] Three-dimensional natural convection experiments in an enclosure
Sadowski, D.
Poulikakos, D.
Kazmierczak, M.
Journal of Thermophysics and Heat Transfer, 1988, 2 (03) : 242 - 249
[33] THREE-DIMENSIONAL SIMULATION OF CONTROLLED COOLING OF ELECTRONIC COMPONENT BY NATURAL AND MIXED CONVECTION
Belarche, Lahoucine
Abourida, Btissam
Doghmi, Hicham
Sannad, Mohamed
Ouzaouit, Meryem
THERMAL SCIENCE, 2021, 25 (04): : 2565 - 2577
[34] Three-dimensional natural convection in a horizontal cylinder
Leong, SS
HEAT AND MASS TRANSFER AUSTRALASIA 1996, 1998, : 65 - 72
[35] Transient hydromagnetic three-dimensional natural convection from an inclined stretching permeable surface
Chamkha, AJ
CHEMICAL ENGINEERING JOURNAL, 2000, 76 (02) : 159 - 168
[36] Transient Natural Convection in a Valley Shaped Triangular Cavity Initially Filled with Stratified Water
Bhowmick, Sidhartha
Xu, Feng
Saha, Suvash C.
PROCEEDINGS OF THE 11TH INTERNATIONAL CONFERENCE ON MECHANICAL ENGINEERING (ICME 2015), 2016, 1754
[37] Three-dimensional analysis of natural convection in a partially-open cavity with internal heat source
Fontana, Eliton
Capeletto, Claudia A.
da Silva, Adriano
Mariani, Viviana C.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 2013, 61 : 525 - 542
[38] Three-dimensional Study of Combined Natural Convection and Conduction in a Cubical Cavity: Effect of the Angle of Inclination
Jamal, Bouchaib
Boukendil, Mohammed
El Moutaouakil, Lahcen
Abdelbaki, Abdelhalim
4TH INTERNATIONAL CONFERENCE ON SMART CITY APPLICATIONS (SCA' 19), 2019,
[39] Laminar natural convection in a discretely heated cavity .1. Assessment of three-dimensional effects
Heindel, TJ
Ramadhyani, S
Incropera, FP
JOURNAL OF HEAT TRANSFER-TRANSACTIONS OF THE ASME, 1995, 117 (04): : 902 - 909
[40] Research on Pendulum Characteristic of Natural Convection Gas within Three-dimensional Spherical Closed Cavity
Piao Linhua
Piao Ran
Chang Xingyuan
ISTAI 2016: PROCEEDINGS OF THE SIXTH INTERNATIONAL SYMPOSIUM ON TEST AUTOMATION & INSTRUMENTATION, 2016, : 245 - 250

← 1 2 3 4 5 →