Fluid Mechanics Revision Points - PDF

POINTS IN FLUID MECH 1 1) The term used to describe fluids whose shear stress is proportional to the shear strain Newtonian fluids 2 Supersonic equipment is not an application of hydrostatic equation 3). The upwards force exerted by fluid on floating or sinking body is Buoyant force 4). Th...

POINTS IN FLUID MECH 1 1) The term used to describe fluids whose shear stress is proportional to the shear strain Newtonian fluids 2 Supersonic equipment is not an application of hydrostatic equation 3). The upwards force exerted by fluid on floating or sinking body is Buoyant force 4). The term used to describe the point at which the weight of a body is considered to act? Centre of gravity 5) The terms is used to describe the imaginary line that are tangential to the velocity vector of a fluid particle is Streamlines 6) The equilibrium experienced when a body appears to be in equilibrium from a moving reference frame is Relative equilibrium 7).The small scale vortices where water spirals downwards are often referred to as Whirlpools 8).A fluid flow described as turbulent Low viscosity at high velocity movement 9). Lines formed by particles that have passed through a specific point in space over time. are Streaklines 10) The term used to describe the local spinning of motion of fluid elements quantified by the vorticity is Rotation 11). The types of flows that has the least loss of energy is laminar 12). The name given to large scale vortices with significant vorticity is Tornadoes 13) The number that helps in the prediction of flow pattern is Reynolds number 14) The equations is associated with Eulerian description of fluid is Navier- Stokes equation 15) The Mathematical tools used to describe and analyze fluid flow in different context Potential stream function 16) A typical application of Eulerian approach of fluid description is Weather forecasting 17). The term used to describe the fluid analysis that deals with application of pressurized air is Pneumatics 18) A fluid property that best helps in the application of object displacement in fluid mechanics Incompressibility 19) The term used to describe to describe the type of equilibrium when a body further moves away from its original position after being tilted Unstable equilibrium 20. Property of a fluid by which molecules of different kinds of fluids are attracted to each other is called adhesion 21. In a static fluid only normal stresses can exist 22) Which of the following is the standard unit for mass flow rate is kg/s 23). If no resistance is encountered by displacement, such a substance is known as ideal fluid. 24). Yogurt and tooth paste fall under Non- Newtonian fluids 25). The value of the compressibility of an ideal fluid is zero 26). The process by which bubbles or voids form within a fluid is called Cavitation 27) Ideal cases are abstract concept but for simplification of analysis 28) The equilibrium exhibited by a perfectly spherical object is Neutral equilibrium 29) The metacentric height is zero in neutral equilibrium. 30) The ratio of inertia force to viscous force is Reynolds number