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Did you know thatTornado moves with high speed but have negligible pressure within pivot region while air flows with very low speed at the eye of tornado.Mercury revolves around the sun with the orbital speed of 47.87 km/sec (29.8 mi/sec), which takes only 88 days to complete one revolution, compared to 365 days taken by Earth planet.Air flows through automobile is an example of irrotational flow.A fluid is continuously deforms, and the parameter to measure the rate of deformation in flows considered as strain.In irrotational region of flow, streamlines and equipotential lines are mutually orthogonal to each other.Our earth's atmosphere divided into two region of flow namely rotational and irrotational regions.Fluid flow through bath tub is an example of vortex flow.The velocity of air flow decreases to zero while pressure increases from the zero at the stagnation point which lies below the vacuum cleaners suction attachment.Viscous stress tensor for an incompressible Newtonian fluid is linearly proportional to the rate of strain tensor.Deformation of fluid element due to translational motion, rotational motion, and rate of strain motion.In the Couette flow, the stresses are in proper direction as fluid above the element pull it to the right while the boundary of lower plate below the element pulls it to the left.Mohr's circle represents the transformation of principal stress and tangentially stress with respect to the coordinate system.Stress induce in the fluid are remains invariant for the transformation of coordinate axes.Doublet is a combination of source flow and sink flow.We can drive Equation of continuity from the Law of conservation of mass.A fluid (liquid or gas) expands or contracts with a variation of pressure acts on it.Only volumetric stress induced in fluid.When fluid is in flowing state, then pressure acts inward and normal to the surface, along with this shear stress also acts on fluid flow due to the viscosity.Fluid kinematic is the study of fundamentals parameters namely, pressure, velocity, viscosity, momentum, etc of a fluid. So, we can say that Fluid kinematics is study of Fluid Mechanic at microscopic level. The book titled "Introduction to Fluid Kinematics" is a comprehensive study of Fluid Kinematic written in simple language for better understanding.
In order to grasp the concepts of Fluid kinematic, this book illustrate concepts with practical approach. At the end of every chapters of this book detailed atleast one Higher Order Thinking question (HOT) just to initiate brainstorming into the subject.
