[1] Vellore Inst Technol, Sch Adv Sci, Dept Math, Vellore 632014, Tamil Nadu, India
[2] King Faisal Univ, Coll Sci, Dept Phys, POB 400, Al Hasa 31982, Saudi Arabia
[3] Univ Tunis El Manar, Fac Sci Tunis, Phys Dept, Lab Fluid Mech, Tunis 2092, Tunisia