1. Department of Mechanical Engineering Science, University of Johannesburg, Johannesburg, South Africa
2. Process Energy and Environmental Technology Station (PEETS), University of Johannesburg, Johannesburg, South Africa
3. Department of Mechanical Engineering, Walter Sisulu University, Mthatha, South Africa
4. Department of Mechanical Engineering, Covenant University, Sango Ota, Nigeria
5. Physics Advanced Research Centre (PARC), Sheda Science and Technology Complex (SHESTCO), Sheda, FCT, Abuja, Nigeria