Chukwu, C. W.
Nyabadza, F.
Article History
Received: 11 February 2020
Revised: 30 September 2020
Accepted: 30 November 2020
First Online: 14 July 2021
COMPETING INTERESTS
: The authors declare that they have are no competing interests.
: CW Chukwu carried out the analytical, and numerical simulations. Both authors formulated and commented on the final version of this work.