Author/Authors :
Al-azzawi, Mohammed Mousa Department of Refrigeration and Air Conditioning - Al-Rafidain University Collage, Baghdad, Iraq , Hassan, Ayad K. Materials Engineering Department - University of Technology, Baghdad, Iraq , Jalghaf, Humam Kareem Mechanical Engineering Department - University of Technology, Baghdad, Iraq , Habeeb, Laith Jaafer Training and Workshop Centre - University of Technology, Baghdad, Iraq
Abstract :
The present paper deals with a numerical study of the hydrodynamic and thermal characteristics resulted from mixed convection in four shapes of wavy cavity at different angles of inclination. The top horizontal cooled wall moving as lid-driven is kept at constant temperature TC and the bottom hot wall is kept at constant temperature Th. The stream function – vorticity approach is being used to answer differential equations and the translation of the directions is achieved by transforming the wavy form obsessed by a rectangle control volume. Validation was performed by comparison t He discussed research with prior findings and noticed that he was in outstanding agreement. The range of dimensionless parameters (Reynolds and Richardson numbers) were 27 ≤ Re ≤845 and 0:01 ≤Ri ≤10 with constant Grashof number Gr=7142. The angles of inclination 𝜑= 0o, 45o, and 90o. Reports were described in terms of rationales, isotherms and overall Nusselt numbers. It was found that the average There is no effect on the heat transfer cycle for angle of inclination. Nusselt number increases with the growth Richardson number. The heat transfer coefficient enhances in a wavy cavity as the amplitude and number of corrugations increase.
