05.2020.283.294

Numerical Study of Heat Transfer Enhancement in Contour Corrugated Channel Using nanofluid and Engine Oil

Author(s):
Naseer Dawood khata*, Zena Khalefa Kadim*, Kamil Abdulhussein Khalaf

Affiliation(s):
†Research Center for Advanced Vehicle (RCAVe), Universitas Indonesia, 16424, Indonesia

Department Of Mechanical Engineering, Faculty Of Engineering, University Of Wassit, Iraq.

Corresponding Author Email: zhenaddubai@gmail.com

This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

improving the design of geometrical parameters of heat exchanger leads to enhance heat transfer and makes it further compacted which in turn increases the efficiency of the thermal process, leading to save operating costs. In the present investigation, thermal and hydraulic performance of laminar flow of the trapezoidal counter heat exchanger with nanofluid and engine oil was carried out numerically over Reynolds number ranges of 1100-2300 for nanofluid and 250 for engine oil. A numerical simulation of laminar flow of nanofluids with volume fractions of 0–4% was carried out. Thermal and flow characteristics are explored with the help of the isotherms contours and streamwise velocity for trapezoidal-corrugated channels. The results showed that the average Nusselt number value increased when adding nanomaterials to water as a result of increasing thermal conductivity on the other side the pressure drop increased by adding nanomaterials to water due to increase the viscosity of the fluid. The results also indicated that the increase in the concentration of suspended nanoparticles in the water led to an increase in the value of the Nusselt numbers, accompanied by an increase in pressure drop. It should be noted that the SiO2/ water nanofluid has yielded significant heat transfer improvement for all Reynolds numbers followed by MgO and pure water respectively. Consequently, the use of corrugated surfaces in reverse heat exchangers with nanofluid can improve heat transfer in many applications