Inscrição na biblioteca: Guest
Heat Transfer Research

Publicou 18 edições por ano

ISSN Imprimir: 1064-2285

ISSN On-line: 2162-6561

The Impact Factor measures the average number of citations received in a particular year by papers published in the journal during the two preceding years. 2017 Journal Citation Reports (Clarivate Analytics, 2018) IF: 1.7 To calculate the five year Impact Factor, citations are counted in 2017 to the previous five years and divided by the source items published in the previous five years. 2017 Journal Citation Reports (Clarivate Analytics, 2018) 5-Year IF: 1.4 The Immediacy Index is the average number of times an article is cited in the year it is published. The journal Immediacy Index indicates how quickly articles in a journal are cited. Immediacy Index: 0.6 The Eigenfactor score, developed by Jevin West and Carl Bergstrom at the University of Washington, is a rating of the total importance of a scientific journal. Journals are rated according to the number of incoming citations, with citations from highly ranked journals weighted to make a larger contribution to the eigenfactor than those from poorly ranked journals. Eigenfactor: 0.00072 The Journal Citation Indicator (JCI) is a single measurement of the field-normalized citation impact of journals in the Web of Science Core Collection across disciplines. The key words here are that the metric is normalized and cross-disciplinary. JCI: 0.43 SJR: 0.318 SNIP: 0.568 CiteScore™:: 3.5 H-Index: 28

Indexed in

On Laminarization of Gas Flow in Strongly Heated Flow Passages

Volume 33, Edição 7&8, 2002, 50 pages
DOI: 10.1615/HeatTransRes.v33.i7-8.10
Get accessGet access

RESUMO

A numerical study is performed to investigate thermal transport phenomena of the laminarizing flows in strongly heated circular tube, channel, and concentric annulus. A k-e turbulence model is employed to determine the turbulent viscosity and the turbulent kinetic energy. The turbulent heat flux is expressed by Boussinesq approximation in which the eddy diffusivity for heat is determined by a t2-et heat-transfer model. The governing boundary-layer equations are discretized by means of a control volume finite-difference technique and numerically solved using a marching procedure. Results are obtained for heat transfer rate, velocity, temperature, turbulent kinetic energy, and temperature variance in the laminarizing flows. Consideration is given to the effects of pipe rotation and channel geometry on the flow and thermal fields.
When the pipe is at rest, it is disclosed that (i) with a substantial reduction in heat transfer at the relatively high Reynolds number, i.e., laminarization takes place, the velocity gradient near the heated wall is attenuated and the turbulent kinetic energy diminishes over the whole cross section along the flow, and (ii) both the temperature variance and the turbulent heat flux also diminish over the whole tube cross section in the flow direction. The presence of pipe rotation induces an attenuation in the turbulent kinetic energy and the turbulent heat flux, resulting in the promotion of laminarization of a gas flow.
If the channel and the concentric annulus are simultaneously heated from both sides with high heat flux, the fluid flow is laminarized as well as in the tube flow case. However, the presence of inner core rotation in the annulus suppresses substantial reductions of the velocity and turbulent kinetic energy in the laminarizing flow. In other words, inner core rotation contributes to the suppression of laminarization of the strongly heated gas flow.
On the contrary, when the two-dimensional channel and the annulus with a stationary inner tube are strongly heated from a one-side wall, the fluid flow cannot be laminarized even for the heat-flux level which courses the laminarizing flow in the tube. The corresponding turbulent kinetic energy and velocity gradient in the vicinity of the heated wall is substantially decreased along the flow, while these levels on the other wall side are induced in the flow direction. Consequently, this amplification suppresses the deterioration of heat transfer performance.

Próximos artigos

Effective Efficiency Analysis of Artificially Roughed Solar Air Heater MAN AZAD Energy, Exergy-Emission Performance Investigation of Heat Exchanger with Turbulators Inserts and Ternary Hybrid Nanofluid Ranjeet Rai, Vikash Kumar, Rashmi Rekha Sahoo Temperature correction method of radiation thermometer based on the nonlinear model fitted from spectral emissivity measurements of Ni-based alloy Yanfen Xu, kaihua zhang, Kun Yu, Yufang Liu Analysis of Thermal Performance in a Two-phase Thermosyphon loop based on Flow Visualization and an Image Processing Technique Avinash Jacob Balihar, Arnab Karmakar, Avinash Kumar, Smriti Minj, P L John Sangso Investigation of the Effect of Dead State Temperature on the Performance of Boron Added Fuels and Different Fuels Used in an Internal Combustion Engine. Irfan UÇKAN, Ahmet Yakın, Rasim Behçet PREDICTION OF PARAMETERS OF BOILER SUPERHEATER BASED ON TRANSFER LEARNING METHOD Shuiguang Tong, Qi Yang, Zheming Tong, Haidan Wang, Xin Chen A temperature pre-rectifier with continuous heat storage and release for waste heat recovery from periodic flue gas Hengyu Qu, Binfan Jiang, Xiangjun Liu, Dehong Xia Study on the Influence of Multi-Frequency Noise on the Combustion Characteristics of Pool Fires in Ship Engine Rooms Zhilin Yuan, Liang Wang, Jiasheng Cao, Yunfeng Yan, Jiaqi Dong, Bingxia Liu, Shuaijun Wang Experimental study on two-phase nonlinear oscillation behavior of miniaturized gravitational heat pipe Yu Fawen, Chaoyang Zhang, Tong Li, Yuhang Zhang, Wentao Zheng Flow boiling heat transfer Coefficient used for the Design of the Evaporator of a Refrigeration Machine using CO2 as Working Fluid Nadim KAROUNE, Rabah GOMRI Analyzing The Heat and Flow Characteristics In Spray Cooling By Using An Optimized Rectangular Finned Heat Sink Altug Karabey, Kenan Yakut Thermal management of lithium-ion battery packs by using corrugated channels with nano-enhanced cooling Fatih Selimefendigil, Aykut Can, Hakan Öztop Convective heat transfer inside a rotating helical pipe filled with saturated porous media Krishan Sharma, Deepu P, Subrata Kumar Preparation method and thermal performance of a new ultra-thin flexible flat plate heat pipe Xuancong Zhang, Jinwang Li, Qi Chen Influence of Temperature Gradients and Fluid Vibrations on the Thermocapillary Droplet Behavior in a Rotating Cylinder Yousuf Alhendal The Effect of Corrugation on Heat Transfer and Pressure Drop in a Solar Air Heater: A Numerical Investigation Aneeq Raheem, Waseem Siddique, Shoaib A.Warraich, Khalid Waheed, Inam Ul Haq, Muhammad Tabish Raheem, Muhammad Muneeb Yaseen Investigation of the Effect of Using Different Nanofluids on the Performance of the Organic Rankine Cycle Meltem ARISU, Tayfun MENLİK Entropy generation and heat transfer performance of cylindrical tube heat exchanger with perforated conical rings: a numerical study Anitha Sakthivel, Tiju Thomas Molecular dynamics study of the thermal transport properties in the graphene/C3N multilayer in-plane heterostructures Junjie Zhu, Jifen Wang, Xinyi Liu, Kuan Zhao Flow boiling critical heat flux in a small tube for FC-72 Yuki Otsuki, Makoto Shibahara, Qiusheng Liu, Sutopo Fitri STUDY OF FORCED ACOUSTIC OSCILLATIONS INFLUENCE ON METHANE OXIDATION PROCESS IN OXYGEN-CONTAINING FLOW OF HYDROGEN COMBUSTION PRODUCTS Anastasiya Krikunova, Konstantin Arefyev, Ilya Grishin, Maxim Abramov, Vladislav Ligostaev, Evgeniy Slivinskii, Vitaliy Krivets Examining the Synergistic Use of East-West Reflector and Coal Cinder in Trapezoidal Solar Pond through Energy Analysis VINOTH KUMAR J, AMARKARTHIK ARUNACHALAM
Portal Digital Begell Biblioteca digital da Begell eBooks Diários Referências e Anais Coleções de pesquisa Políticas de preços e assinaturas Begell House Contato Language English 中文 Русский Português German French Spain