Welding is a process of joining similar and dissimilar metals or other material by application of heat with or without application of pressure and addition of filler material. It is used as permanent fasteners. Welding is essential process of every manufacturing industries. In fact, the future of any new metal may depend on how far it would lend itself to fabrication by welding.
The weldability has been defined as the capacity of being welded into inseparable joints having specified pro
A fluid, which is incompressible and having no viscosity, is known as an ideal fluid. Ideal fluid is only an imaginary fluid as all the fluids, which exist, have some viscosity.
A fluid, which possesses viscosity, is known as real fluid. All the fluids, in actual practice, are real fluids.
Example : Water, Air etc.
A real fluid, in which shear stress in directly proportional to the rate of shear strain or velocity gradient,