Fluid mechanics II is the advance course offered at undergraduate level in mechanical engineering. The course covers the topics related to viscous flow, boundary layer theory and their applications including fans, turbines and pumps. The course also includes elementary topics of compressible flows useful for analysis of nozzles and compressible Turbomachinery. Keeping in view the modern trends in fluid dynamics, an introduction to numerical analysis and CFD is also included. The successful completion of this course (Theory + Practical) would help students in achieving the following objectives:

• Understanding the behavior of viscous fluid dynamics.
• To be able to analyze the problems related to basic in compressible viscous flows.
• Determination of non-dimension parameters for a given system.
• To apply the knowledge of laminar and turbulent flows to find pressure drop in pipes.
• Understanding the characteristics of boundary layer and calculate the forces acting on submerge.


CLO-1: Analyze the problems related to basic incompressible viscous flows. (C4)
CLO-2: Develop techniques useful for industrial applications of turbo-machines.(C5)
CLO-3: Recommend the solution using numerical methods used in CFD by assessing problems of elementary fluid dynamics. (C6)
CLO-4: Identify the most feasible solution for given project related to fluid mechanics through report and oral presentation.(C1)


  1. Viscous flow in Pipes – Six Lectures
  • Various characteristics of the flow in pipes.
  • Laminar and turbulent pipe flow.
  • Losses in straight portions of pipes as well as those in various pipe system components.
  • Equations and principles to analyse a variety of pipe flow situations.
  • Flowrate in a pipe by use of common flowmeters.

2. Flow over Immersed Bodies – Six Lectures

  • The features of external flow.
  • Fundamental characteristics of a boundary layer, including laminar, transitional, and turbulent regimes.
  • Boundary layer parameters for flow past a flat plate.
  • Boundary layer separation.
  • Lift and drag forces for various objects

3. Compressible flows – Six Lectures

  • Incompressible and compressible flows, and know when the
  • Approximations associated with assuming fluid incompressibility.
  • Categories of compressible
  • Flows of ideal gases.
  • Speed of sound and Mach number and their practical significance.
  • Problems involving isentropic and non-isentropic flows including flows across normal shock waves.

4. Turbo-machines – Eight Lectures

  • How and why a turbomachine works.
  • Basic differences between a turbine and a pump.
  • The importance of minimizing loss in a turbomachine.
  • Class of turbomachine for a particular application.
  • Fundamentals of sensibly scaling turbomachines that are larger or smaller than a prototype.
  • Advanced engineering work involving the fluid mechanics of turbomachinery (e.g., design, development, research).

5. CFD – Six Lectures

  • Introduction to CFD
  • How CFD works?
  • Domain discretization and boundary conditions
  • Finite Volume Method (FVM)
  • Using FVM to solve convection diffusion problems