Topic of Research Seminar: Exploration of heat transfer problems involving Newtonian and non-Newtonian flows over isothermal and non-isothermal boundaries

Abstract: The study of boundary layer flow around moving and stationary bodies holds significant physical relevance, leading many researchers to prioritize this area of investigation. Revolving flows are prevalent in various industrial and engineering applications, including agitators, blenders, jet streams, air conditioning systems, twisters, and gas turbines. This thesis revisits the rotating disk and flat surface problems using inversely linear and exponentially temperature-dependent models within the context of Newtonian fluid dynamics. However, it is important to note that many industrial fluids exhibit non-Newtonian behavior, with viscosity that changes in response to applied stress or strain rates. Examples of non-Newtonian fluids include greases, paints, sauces, chocolates, and saliva. This research investigates the rotating disk problem using both Newtonian and non-Newtonian models, specifically focusing on the Reiner-Rivlin and second-grade non-Newtonian models for rotating disk and stretching sheet problems. Numerical and series solutions for these non-Newtonian problems are obtained using MATLAB’s built-in code bvp5c and the homotopy analysis method.

Subject Field of Topic: Fluid Mechanics

Name of Speaker: Mr. Saddam Sultan Akbar

Professorial Rank of Speaker: PhD Scholar (Mathematics Department), School of Natural Sciences (SNS – NUST)

Email of Speaker: [email protected]

Affiliation of Speaker: School of Natural Sciences (SNS – NUST)

Date and Venue: (Wednesday) 26 February 2025, 03:30 pm, CR # 303, Old Building SNS, School of Natural Sciences (SNS), NUST Islamabad