1. Head of the Mathematics Department, American International University-Bangladesh, Banani, Dhaka 1213, Bangladesh e-mail:
2. Department of Mechanical and Industrial Engineering, College of Engineering, Majmaah University, Majmaah 11952, Saudi Arabia e-mail:
3. School of Mathematical Sciences, Universiti Sains Malaysia, Penang 11800, Malaysia e-mail:
4. Spray Research Group, Petroleum and Gas Engineering Division, School of Computing, Science and Engineering (CSE), University of Salford, Room G77, Newton Building, Salford M54WT, UK e-mail: