自然科学版 英文版
自然科学版 英文版
自然科学版 英文版

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中南大学学报(英文版)

Journal of Central South University

Vol. 26    No. 5    May 2019

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Effects of homogeneous-heterogeneous reactions and thermal radiation on magneto-hydrodynamic Cu-water nanofluid flow over an expanding flat plate with non-uniform heat source
DOGONCHI A S1, CHAMKHA Ali J2, 3, HASHEMI-TILEHNOEE M1,SEYYEDI S M1, RIZWAN-UL-HAQ4, GANJI D D5

1. Department of Mechanical Engineering, Aliabad Katoul Branch, Islamic Azad University,Aliabad Katoul, Iran;
2. Mechanical Engineering Department, Prince Sultan Endowment for Energy and Environment, Prince Mohammad Bin Fahd University, Al-Khobar 31952, Saudi Arabia;
3. RAK Research and Innovation Center, American University of Ras Al Khaimah, P.O. Box 10021,Ras Al Khaimah, United Arab Emirates;
4. Department of Electrical Engineering, Bahria University, Islamabad, Pakistan;
5. Mechanical Engineering Department, Babol Noshirvani University of Technology, Babol, Iran

Abstract:This study presents the effect of non-uniform heat source on the magneto-hydrodynamic flow of nanofluid across an expanding plate with consideration of the homogeneous-heterogeneous reactions and thermal radiation effects. A nanofluid’s dynamic viscosity and effective thermal conductivity are specified with Corcione correlation. According to this correlation, the thermal conductivity is carried out by the Brownian motion. Similarity transformations reduce the governing equations concerned with energy, momentum, and concentration of nanofluid and then numerically solved. The influences of the effective parameters, e.g., the internal heat source parameters, the volume fraction of nanofluid, the radiation parameter, the homogeneous reaction parameter, the magnetic parameter, the heterogeneous parameter and the Schmidt number are studied on the heat and flow transfer features. Further, regarding the effective parameters of the present work, the correlation for the Nusselt number has been developed. The outcomes illustrate that with the raising of the heterogeneous parameter and the homogeneous reaction parameter, the concentration profile diminishes. In addition, the outcomes point to a reverse relationship between the Nusselt number and the internal heat source parameters.

 

Key words: nanofluid; non-uniform heat source; homogeneous-heterogeneous reactions; thermal radiation; Brownian motion

中南大学学报(自然科学版)
  ISSN 1672-7207
CN 43-1426/N
ZDXZAC
中南大学学报(英文版)
  ISSN 2095-2899
CN 43-1516/TB
JCSTFT
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