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Abstract

The work presents a numerical investigation for the convective heat transfer of nanofluids under a laminar flow inside a straight tube. Different models applied to investigate the improvement in convective heat transfer, and Nusselt number in comparison with the experimental data. The impact of temperature dependence, temperature independence, and Brownian motion, was studied through the used models. In addition, temperature distribution and velocity field discussed through the presented models. Various concentrations of nanoparticles are used to explore the results of each equation with more precision. It was shown that achieving the solution through specific models could provide better consistency between obtained results and experimental data than the others.
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Bibliography

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Authors and Affiliations

Farqad Rasheed Saeed
1
Marwah Abdulkareem Al-Dulaimi

  1. Ministry of Science and Technology, Directorate of Materials Research, 55509 Al-Jadriya, Iraq
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Abstract

The utilization of readily accessible natural fibres in lightweight foamed concrete (LWFC), which is already a widely used building material, can have a substantial positive impact on the environment. Therefore, the mechanical characteristics might be increased by using a correct mix proportion of fibre-reinforced LWFC. Innovative LWFC-agave fibre (AF) composites were created in this experiment. In order to get the best mechanical qualities, this investigation set out to establish the correct weight fraction of AF to be added to LWFC. Two LWFC densities of 750 and 1500 kg/m3 were produced with the addition of several weight fractions of AF, precisely 0.0%, 1.5%, 3.0%, 4.5%, 6.0%, and 7.5%, were used. To establish the mechanical characteristics of LWFCAF composites, flexural tests, tensile strength tests, axial compression tests, and ultrasonic pulse velocity tests were carried out. Test results revealed that the combination of LWFC together with a weight fraction of 4.5% of AF exhibited superior mechanical properties. Beyond 4.5% of AF’s weight fraction, the mechanical properties started to deteriorate. This study gives insight and crucial data on the mechanical characteristics of LWFC-AF composites therefore it will enable future researchers to explore other properties of LWFC reinforced with AF.
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Authors and Affiliations

Md Azree Othuman Mydin
1
ORCID: ORCID
M.M. Al Bakri Abdullah
2
ORCID: ORCID
R. Omar
3
ORCID: ORCID
A. Dulaimi
4
ORCID: ORCID
W.M. Wan Ibrahim
5
ORCID: ORCID
B. Jeż
6
ORCID: ORCID
M. Nabiałek
7
ORCID: ORCID

  1. Universiti Sains Malaysia, School of Housing, Building and Planning, 11800, Penang, Malaysia
  2. Universiti Malaysia Perlis (UniMAP), Faculty of Chemical Engineering & Technology, Universiti Malaysia Perlis 01000 Perlis, Malaysia
  3. Universiti Tun Hussein Onn Malaysia (UTHM), Faculty of Technology Management and Business, Department of Construction Management, Parit Raja, Batu Pahat, Johor 86400, Malaysia
  4. University of Warith Al-Anbiyaa, College of Engineering, Karbala, 56001, Iraq; Liverpool John Moores University, School of Civil Engineering and Built Environment,Liverpool L3 2ET, UK
  5. Universiti Malaysia Perlis (UniMAP), Faculty of Mechanical Engineering & Technology, Universiti Malaysia Perlis 01000 Perlis, Malaysia
  6. Czestochowa University of Technology, Faculty of Mechanical Engineering and Computer Science, Department of Technology and Automation, 19c Armii Krajowej Av., 42-200 Czestochowa , Poland
  7. Czestochowa University of Technology, Faculty of Production Engineering and Materials Technology, Department of Physics, 19 Armii Krajowej Av., 42-200 Częstochowa, Poland

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