## Articles Posted in the " Fluid Mechanics " Category

• ### * Mcq–Manometers

Mcq–Manometers It increases the in depth knowledge regarding Piezometer, different manometers and Bourdon tube gauge. A Piezometer is used to measure the pressure of a (a) Gas (b) Liquid (c) Gas as well as liquid (d) None (Ans: b) A Piezometer is used to measure (a) Vacuum pressure (b) High pressure (c) Vacuum as well […]

• ### * Manometers

Manometers Manometer is an instrument which measures the pressure of a liquid or a gas while at rest. Types of Manometers (i) Simple manometer (ii) Differential manometer Simple Manometers (i) Piezometer (ii) U-tube manometer (iii) Single column manometer (Micro-manometer) Piezometer Piezometer tube is perhaps the simplest among the various pressure measuring devices and consists of a vertical […]

• ### Compressible Flow

Compressible Flow NORMAL SHOCK IN A COMPRESSIBLE FLUID FLOW When the flow passes from a supersonic to subsonic in a SMALL distance, the velocity decreases suddenly and pressure rises sharply. This sudden pressure rise is a normal to the pipe surface and is called the NORMAL SHOCK. It happens only in a compressible flow (gas […]

• ### * FLUID KINEMATICS—-EQUATIONS OF FLUID MOTION

FLUID KINEMATICS—-EQUATIONS OF FLUID MOTION  Fluid motion equation use two approaches. (i) Integral approach–Not being dealt here. (ii) Differential approach Differential approach uses Control Volume method A control volume is a finite region having OPEN boundaries through which there is mass transfer, momentum transfer and energy transfer. Control volume method considers the followings aspects: a. […]

• ### * Stream Function, Velocity Potential and Cauchy Riemann Equations—-2

Stream Function, Velocity Potential and Cauchy Riemann Equations—-2  VELOCITY POTENTIAL Velocity Potential φ is a Scalar Function of space and time co-ordinates such that its NEGATIVE derivative with respect to any direction give the fluid velocity in that direction. Thus φ is a 3-D function. φ= f(x, y, z, t) For a steady flow φ= (x, […]

• ### Stream Function, Velocity Potential and Cauchy Reimann Equations

Stream Function, Velocity Potential and Cauchy Riemann Equations Stream function ‘ψ’ and velocity potential ‘φ’ are arbitrary fictitious parameters. These do not exist in actual practice. Fluid flow is a complex phenomenon. Thus these have been developed to understand complexity of fluid dynamics in a easy manner. STREAM FUNCTION It is the volume flux in the […]

• ### Types of Fluid Flow-2

Types of Fluid Flow-2  TABLE: Types of Fluid Flow Sr. No. Type of Flow Definition Application 1.  One Dimensional Flow When two velocity components are negligible fully-developed flows in long uniform pipes and open-channels in which velocity is uniform across the pipe cross-section 2. 2-Dimensional   When one velocity components is negligible flow past a […]

• ### Types of Fluid Flow

Types of Fluid Flow FLUIDS IN MOTION There are different types of flows for a moving fluid. The study of moving fluids is quite complex, tedious and time consuming. But the analysis can be made simple by making one or more simplifying assumptions e.g., one-dimensional flow, steady-state flow, non-viscous flow and in-compressible flow. More is […]

• ### * Vacuum Application

Vacuum  Application VACUUM Vacuum is void. It is a space devoid of matter. It represents something short or vacant. But, in reality it is linked to pressure.It is a pressure below atmospheric pressure. Atmospheric pressure is 29.92 inches of Hg. Consider the following steps to understand vacuum. (i) Consider a bottle is open to atmosphere. […]

• ### * FORCE OF BUOYANCY

FORCE OF BUOYANCY FORCE OF BUOYANCY AND CENTER OF BUOYANCY Magnitude of the force of buoyancy = weight of liquid displaced by the immersed solid Direction of the force of buoyancy = Vertically upwards Center of buoyancy = Center of gravity of the displaced volume of the liquid EQUILIBRIUM OF FLOATING BODIES (i)Stable Equilibrium—When a […]