Research Article A Weibull Distribution: Flow and Heat Transfer of Nanofluids Containing Carbon Nanotubes with Radiation and Velocity Slip Effects Izamarlina Asshaari, 1 Alias Jedi , 2 and Kafi Dano Pati 3 1 Department of Engineering Education, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, 43600 UKM, Bangi, Selangor, Malaysia 2 Department of Mechanical and Manufacturing Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, 43600 UKM, Bangi, Selangor, Malaysia 3 University of Duhok, College of Science, Department of Computer Sciences, Zakho Street 38, 1006 AJ Kurdistan Region, Duhok, Iraq Correspondence should be addressed to Alias Jedi; aliasjedi@ukm.edu.my Received 19 February 2020; Revised 14 May 2020; Accepted 30 May 2020; Published 7 July 2020 Academic Editor: Parviz Ghadimi Copyright © 2020 Izamarlina Asshaari et al. is 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. In this study, the Tiwari and Das model is numerically studied, in case of a moving plate containing both single-walled and multiwalled carbon nanotubes (SWCNTs and MWCNTs, respectively), in the presence of thermal radiation and the slip effect. Employing the similarity transformation, a set of 2nd-order partial differential equations (which are used to model the flow and heat transfer) are solved numerically using the boundary value problem with 4th-order accuracy (BVP4C) method. e effects of related parameters, such as the volume fraction of nanoparticles, moving, slip, and radiation parameter on the heat transfer performance are analysed and discussed. Results indicate that a unique solution was placed when the plate travels in assisting flow conditions. Additionally, as the nanoparticle volume fraction (φ)risesat φ � 0.2, the skin friction and heat transfer rate decrease. It is also observed that when the slip parameter (β) increases at β � 0.4, the skin friction decreases, whereas the heat transfer rate increases. Meanwhile, the heat transfer rate decreases when the thermal radiation (N R ) increases to 0.7. Moreover, it is found that the SWCNTs are more efficient when the skin friction coefficient and the Nusselt number are considered. It is found that the Weibull distribution is more suitable in fitting the skin friction data. 1. Introduction Originally discovered in 1995, nanofluids are a class of fluids that have been attracting significant attention of researchers in various fields. Owing to their advantages, nanofluids have been implemented in various industrial sectors, such as energy and biomedical fields. Choi and Eastman [1] reported that the thermal conductivity of nanofluids can be enhanced by dispersing nanosized particles in the fluid. Moreover, it was discovered that the flow of the base fluid improved by suspending nanoparticles in it [2]. Alwaeli et al. [3] also reported that the addition of alumina and carbon black nanoparticles improved the cooling effect on the solar panels. Meanwhile, carbon nanotubes (CNTs) have become one of the most effective materials, owing to their ability to enhance the thermal characteristics of the fluid, high elec- trical conductivity, unique optical transmission, and high tensile strength. ey can also increase the entropy gener- ation [4]. CNTs are rolled-up graphene sheets arranged in a cylindrical shape. ey are of two types: single-walled (SWCNTs) and multiwalled (MWCNTs) [5]. It was observed that the boundary layer separation could be delayed if suction effects on the CNTs’ nanoparticle volume fraction are provided [6]. According to Naganthran et al. [7] and Ahmad et al. [8], CNTs have higher thermal conductivity. When dispersed in the base fluid, they can accelerate the rate Hindawi Mathematical Problems in Engineering Volume 2020, Article ID 9417598, 9 pages https://doi.org/10.1155/2020/9417598