1. Department of Physics, Faculty of Sciences; University of 20 août 1955-Skikda; Skikda Algeria
2. Mechanical Engineering Department, College of Engineering; University of Babylon; Babylon City Iraq
3. Mechanical Engineering Department, College of Engineering; Haïl University; Haïl City Saudi Arabia
4. Unité de Métrologie en Mécanique des Fluides et Thermique; Ecole Nationale d'Ingénieurs; Monastir Tunisia
5. Department of Mechanical Engineering, College of Engineering at Wadi Addwaser; Prince Sattam Bin Abdulaziz University; Kharj Saudi Arabia
6. Department of Mechanical Engineering, Faculty of Engineering; University of Khartoum; Khartoum Sudan